chemical reaction Crossword Puzzles

Unit 2 Extra Credit Crossword Puzzle 2023-11-01

Unit 2 Extra Credit Crossword Puzzle crossword puzzle
Across
  1. Property of water where water sticks to other molecules
  2. Lipid that makes up the cell membrane
  3. The building block of proteins
  4. Bond that forms between water molecules
  5. The type of fat that is liquid at room temperature
  6. Location where an enzyme binds to the substrate
  7. Something that speeds up chemical reactions
  8. When we combine monomers, we get a...
  9. Name for all molecules building blocks
  10. The polymer of carbs
  11. Polymer of proteins
  12. Macromolecule that provides organisms with quick energy
  13. Carbohydrate made up of only two rings
Down
  1. Energy required to start a chemical reaction
  2. Raw materials of a chemical reaction
  3. Chemical reaction that breaks large molecules down
  4. The type of fat that is solid at room temperature
  5. Molecule that is considered a 'protein catalyst'
  6. Molecule with the chemical formula H2O
  7. Lipid made of glycerol and three fatty acid chains
  8. Property of water where water sticks to other water molecules
  9. Results of a chemical reaction
  10. Macromolecule that provides organisms with structure, defense, and enzymes
  11. Macromolecule that provides organisms with long term energy

24 Clues: Polymer of proteins • The polymer of carbs • The building block of proteins • Results of a chemical reaction • Raw materials of a chemical reaction • Lipid that makes up the cell membrane • When we combine monomers, we get a... • Molecule with the chemical formula H2O • Name for all molecules building blocks • Carbohydrate made up of only two rings • ...

Bonus Points U5F1 2022-02-22

Bonus Points U5F1 crossword puzzle
Across
  1. The speed at which a chemical reaction occurs
  2. the minimum quantity of energy which the reacting species must possess in order to undergo a specified reaction.
  3. any chemical substance produced during the conversion of some reactant to a product
  4. when energy is taken from the surroundings
  5. the outside part or uppermost layer of something
  6. a state of anxiety or nervous excitement.
Down
  1. reaction in which the conversion of reactants to products and the conversion of products to reactants occur simultaneously
  2. a reaction in which products are produced from reactants and it goes from left to right in a reversible reaction.
  3. the branch of physical chemistry that is concerned with understanding how fast or how slow chemical reactions occur
  4. the sum of the internal energy and the product of the pressure and volume of a thermodynamic system.
  5. coordinate diagram a graph that plots energyversus reaction progress
  6. a substance that delays, slows or prevents a chemical reaction
  7. is a "reaction for which the overall standard enthalpy change ΔH⚬ is negative
  8. quantitative measure of how hot or cold something is
  9. any substance that increases the rate of a reaction without itself being consumed
  10. eat absorbed or evolved (or the change in enthalpy) in any chemical reaction is a fixed quantity

16 Clues: a state of anxiety or nervous excitement. • when energy is taken from the surroundings • The speed at which a chemical reaction occurs • the outside part or uppermost layer of something • quantitative measure of how hot or cold something is • a substance that delays, slows or prevents a chemical reaction • ...

Module 1 revision 2019-11-06

Module 1 revision crossword puzzle
Across
  1. H2SO4
  2. A chemical which has a pH less than 7
  3. A type of reaction where the chemical breaks down with heating
  4. NH3
  5. Cl-
  6. A scale that shows the strength of acids and alkalis
  7. A reaction between acids and alkalis which react together to make a solution of water at pH 7
  8. HCl
  9. SO42-
  10. A reaction that gives out energy to the surroundings
  11. This is the particle that is alkali eg OH-
Down
  1. A dye which changes colour depending on whether it is added to an acid or an alkali
  2. NaOH
  3. CO32-
  4. A reaction that takes in energy from the surroundings
  5. HNO3
  6. This is the particle that is acid eg H+
  7. NO3-
  8. A substance that speeds up the rate of a reaction
  9. A chemical which has a pH more than 7

20 Clues: NH3 • Cl- • HCl • NaOH • HNO3 • NO3- • CO32- • H2SO4 • SO42- • A chemical which has a pH less than 7 • A chemical which has a pH more than 7 • This is the particle that is acid eg H+ • This is the particle that is alkali eg OH- • A substance that speeds up the rate of a reaction • A scale that shows the strength of acids and alkalis • A reaction that gives out energy to the surroundings • ...

Chemical Reactions Vocabulary 2024-02-25

Chemical Reactions Vocabulary crossword puzzle
Across
  1. a reaction that absorbs heat
  2. a way of showing how many of each atom are in a molecule
  3. a bond between a metal and electrons that involves moving electrons
  4. a positively charged subatomic particle found in the nucleus of the atom
  5. changing a chemical into a new chemical
  6. the study of the properties and behavior of matter
  7. what you end with in a chemical reaction
  8. a reaction that has the same number of each atom in the reactants and products
  9. a bond between nonmetals that involves sharing electrons
  10. the smallest particle of a chemical element that can exist
Down
  1. a reaction that releases heat
  2. either solid, liquid, or gas
  3. what you start with in a chemical reaction
  4. a negatively charged subatomic particle found orbiting the nucleus of the atom
  5. a table of elements organized by atomic number
  6. a measurement of acidity or basicity of a chemical
  7. a neutrally charged subatomic particle found in the nucleus of the atom

17 Clues: a reaction that absorbs heat • either solid, liquid, or gas • a reaction that releases heat • changing a chemical into a new chemical • what you end with in a chemical reaction • what you start with in a chemical reaction • a table of elements organized by atomic number • a measurement of acidity or basicity of a chemical • ...

biomolecules vocab choice board 2024-05-01

biomolecules vocab choice board crossword puzzle
Across
  1. a simple molecule with two or more binding sites through which it forms covalent linkages with other monomer molecules to form the macromolecule.
  2. a molecule that has nitrogen and chemical properties of a base.
  3. A chemical element that's stable and adaptable
  4. molecules that are long-chained and polymeric
  5. A chemical compound that’s in biotic organisms.
  6. A natural compound that occurs, or a imatitive of a compound
  7. a molecule that enzymes react with
  8. Molecules that are living and insoluble in insoluble in water
Down
  1. large organic compounds that are essential to lives
  2. substances made by the cells of animals and plants.
  3. the minimum energy amount that’s needed to activate atoms and molecules to a condition where chemical transformation or physical transport can occur.
  4. a chemical reaction when water is mainly used to break down chemical bonds substances
  5. substances that participate in a chemical reaction to form a product
  6. a substance that can increase the rate of chemical reactions without being consumed and changed by the reacting chemicals is called a catalyst.
  7. building blocks of fat in our bodies and the food that we eat.
  8. Where the chemical reaction occurs in a antibody or enzyme
  9. a substance that’s formed as the result of a chemical reaction.
  10. big molecules made of monomers
  11. a sugar biological molecule, also in DNA
  12. Molecules that can be put together and create proteins.

20 Clues: big molecules made of monomers • a molecule that enzymes react with • a sugar biological molecule, also in DNA • molecules that are long-chained and polymeric • A chemical element that's stable and adaptable • A chemical compound that’s in biotic organisms. • large organic compounds that are essential to lives • substances made by the cells of animals and plants. • ...

Law of Conservation of Mass 2022-02-10

Law of Conservation of Mass crossword puzzle
Across
  1. The numbers behind chemical symbols
  2. and environment where matter can enter or escape
  3. A chemical equation with the same number of atoms in each element on the sides of the equation
  4. a part or aspect of something abstract, especially one that is essential or characteristic.
  5. A group of atoms bonded together is a _______
  6. _________ are what you have at the end of a chemical reaction
  7. when the total mass of the reactant is equal to the mass of the product the equation is _________
  8. Mass can also be called ________
  9. during a chemical reaction matter cannot be created or destroyed
  10. 2 or more substances combine to form a new compound
Down
  1. 1 element replaces another element in a compound
  2. The substances present before the reaction occurs
  3. Mass cannot be _________ or destroyed
  4. an environment where matter cannot enter or escape
  5. burning wood, rust, campfire are examples of a
  6. A chemical reaction that requires heat
  7. a single unit of a pure substance, or "element".
  8. a compound decomposes into 2 or more simpler substances
  9. The numbers in front of chemical symbols
  10. What does the arrow mean in a chemical equation?

20 Clues: Mass can also be called ________ • The numbers behind chemical symbols • Mass cannot be _________ or destroyed • A chemical reaction that requires heat • The numbers in front of chemical symbols • A group of atoms bonded together is a _______ • burning wood, rust, campfire are examples of a • 1 element replaces another element in a compound • ...

chapter 8 2012-07-26

chapter 8 crossword puzzle
Across
  1. The binding of a regulatory molecule to a protein
  2. A spontaneous chemical reaction/ a net release of free energy
  3. A non-spontaneous chemical reaction/ free energy absorbed
  4. The energy that matter possesses as a result of its location
  5. A macromolecule serving as a catalyst, usually a protein
  6. A series of chemical reactions that breaks down molecules
  7. Anabolic pathway or catabolic pathway
  8. The magnitude of a cell's membrane voltage at equilibrium
Down
  1. A chemical agent that increases reaction without being consumed
  2. The study of energy transformations that occur in matter
  3. A series of chemical reactions that builds a complex molecule
  4. Releases free energy to drive endergonic reaction in cells
  5. A measure of disorder or randomness
  6. Any non-protein molecule or ion required for proper enzyme function
  7. Splitting macromolecules by the enzymatic addition of water
  8. Energy available in molecules for release in a chemical reaction
  9. The energy associated with the relative motion of objects

17 Clues: A measure of disorder or randomness • Anabolic pathway or catabolic pathway • The binding of a regulatory molecule to a protein • The study of energy transformations that occur in matter • A macromolecule serving as a catalyst, usually a protein • A non-spontaneous chemical reaction/ free energy absorbed • A series of chemical reactions that breaks down molecules • ...

Chapter 7 & 13 Crossword 2023-05-02

Chapter 7 & 13 Crossword crossword puzzle
Across
  1. increases the rate of a chemical reaction
  2. A substance that is added to create a chemical reaction
  3. A breakdown of a chemical
  4. A chemical reaction in the form of symbols or formulas
  5. The amount of a substance
  6. Home of the Spartans
  7. an upward force that is exerted by a fluid
  8. a process that releases energy from the system to its surroundings
  9. A substance mass per unit of volume ( D= M/V)
  10. a process that absorbs heat
  11. One of something
Down
  1. The artificial execution of a chemical reaction to get one or more products
  2. a room in a school where students are taught at
  3. A species that is created from chemical reactions
  4. The distance between the top and bottom of something
  5. Words that don’t make sense or don’t have a meaning
  6. A number that is placed in front of a formula, can be used to balance equations
  7. A time period that is after noon
  8. A force produced by the motion of a fluid past an object
  9. two of something
  10. A liquid or a gas that flows

21 Clues: two of something • One of something • Home of the Spartans • A breakdown of a chemical • The amount of a substance • a process that absorbs heat • A liquid or a gas that flows • A time period that is after noon • increases the rate of a chemical reaction • an upward force that is exerted by a fluid • A substance mass per unit of volume ( D= M/V) • ...

Changes in matter vocabulary 2025-04-23

Changes in matter vocabulary crossword puzzle
Across
  1. noting or pertaining to a chemical change
  2. very small particle
  3. A substance that starts or speeds up a chemical reaction
  4. the measurement of matter
  5. A ... happens when you mix chemicals together
  6. reactions of the chemical elements and the compounds they form
  7. A composition of two or more substances that are not chemically combined
  8. A substance consisting of atoms or ions of two or more different elements
Down
  1. A number or quantity obtained by multiplication
  2. transfer heat energy to another physical system
  3. A force of attraction that holds atoms or ions together in a molecule or crystal
  4. a chemical reaction that absorbs heat
  5. The force of attraction that holds molecules
  6. Internal energy that is transferred to a physical system from outside the system
  7. A substance participating in a chemical reaction
  8. solid, liquid, or gas
  9. combinations of neutrons and protons
  10. ... lets you have power
  11. A substance that cannot be broken down into simpler substances by chemical
  12. The amount of space occupied by a three-dimensional object or region of space

20 Clues: very small particle • solid, liquid, or gas • ... lets you have power • the measurement of matter • combinations of neutrons and protons • a chemical reaction that absorbs heat • noting or pertaining to a chemical change • The force of attraction that holds molecules • A ... happens when you mix chemicals together • A number or quantity obtained by multiplication • ...

Redox Reaction 2020-07-02

Redox Reaction crossword puzzle
Across
  1. cell System in which there's an electric current flowing while a chemical reaction occurs.
  2. Oxidation________ electrons
  3. Metal that can prevent rusting
  4. Site which oxidation or reduction:anode and cathode
  5. Oxidizing agent
  6. Where oxidation occur
  7. Gain of electrons and the loss of oxidation number
  8. _______Oxidation number
  9. Electrochemical cell in which a spontaneous chemical reaction causes a flow of electrons.
  10. Reaction that shows either oxidation or reduction portion of a redox reaction.
Down
  1. Number assign to keep track of electron gain or loss redox reaction
  2. Itself oxidized
  3. Part of a voltaic cell that connects two containers and allow flow of ions.
  4. Oxidation__________ hydrogen
  5. Reduction_______ electrons
  6. Cell that requires a non spontaneous chemical reaction occur(uses battery)
  7. An oxidation-reduction reaction
  8. Particle in redox reaction

18 Clues: Itself oxidized • Oxidizing agent • Where oxidation occur • _______Oxidation number • Reduction_______ electrons • Particle in redox reaction • Oxidation________ electrons • Oxidation__________ hydrogen • Metal that can prevent rusting • An oxidation-reduction reaction • Gain of electrons and the loss of oxidation number • Site which oxidation or reduction:anode and cathode • ...

MIKE INCORVAIA CHAPTER 13 mr burkholder 2016-10-11

MIKE INCORVAIA CHAPTER 13 mr burkholder crossword puzzle
Across
  1. a rapid exothermic oxidation
  2. a reaction between an acid and a base
  3. Substance that donates hydrogen ions
  4. polyatomic ion made by adding a proton to a water molecule
  5. polyatomic ion made by removing a proton from a water molecule
  6. chemical reaction in which there is a net absorption
  7. deterioration of metal
  8. chemical reaction which there is a net release
  9. accepts hydrogen ions
Down
  1. concentration is higher than the hydronium ion concentration
  2. the minimal energy for for a chemical reaction to proceed
  3. reactant loses one or more electrons
  4. behave as either an acid or a base
  5. new materials formed in a chemical reaction
  6. the reacting substances in a chemical change

15 Clues: accepts hydrogen ions • deterioration of metal • a rapid exothermic oxidation • behave as either an acid or a base • Substance that donates hydrogen ions • reactant loses one or more electrons • a reaction between an acid and a base • new materials formed in a chemical reaction • the reacting substances in a chemical change • chemical reaction which there is a net release • ...

Chemistry Crossword 2017-11-07

Chemistry Crossword crossword puzzle
Across
  1. a material that electric charge can move through easily
  2. description of a solid that can be stretched into a long wire
  3. chemical reaction that occurs when oxygen reacts with a substance to form a new substance and give off energy
  4. reaction that takes place when two or more substances react to form new substances
  5. table in which the elements are organized by their physical and chemical properties
  6. pure substance formed when non-metals combine
  7. chemical reaction that releases energy
  8. pure substance that cannot be broken down into other substances; substance made up of only one type of atom
  9. group 17 elements in the periodic table; the most reactive non-metals
  10. property that describes the physical appearance and composition of a substance
  11. substance that reacts with another substance or substances in a chemical reaction to create new substances with different property
  12. gases group 18 elements in the periodic table;the most stable and nonreactive elements
Down
  1. slow chemical change that occurs when oxygen in the air reacts with a metal
  2. chemical reaction that absorbs energy
  3. combination of symbols that represent a compound; the formula identifies the elements in the compound and the amount of each element
  4. ability of a substance to conduct electricity or heat
  5. description of how a substance interacts with other substances, such as acids;chemical properties are observable only when chemical change occurs
  6. energy stored in chemicals and released when chemicals react; a form of potential or stored energy
  7. dull, brittle element that does not conduct electricity
  8. substance that helps a chemical reaction to proceed more quickly
  9. (CO(g))colorless, odorless gas;produced by incomplete combustion of chemicals containing carbon (e.g. hydrocarbons); major source: motor vehicles
  10. Workplace Hazardous Materials Information System; a system of easy-to-see warning symbols on hazardous materials
  11. change in the appearance or state of a substance that does not change the composition
  12. catalyst involved in chemical reaction in living things
  13. change that results when two or more substances react to create a different substance or substances; the new substances have completely different properties from the original ones

25 Clues: chemical reaction that absorbs energy • chemical reaction that releases energy • pure substance formed when non-metals combine • ability of a substance to conduct electricity or heat • a material that electric charge can move through easily • dull, brittle element that does not conduct electricity • catalyst involved in chemical reaction in living things • ...

VOCABULARY CHEMICAL MATTERS. 2024-10-31

VOCABULARY CHEMICAL MATTERS. crossword puzzle
Across
  1. Mass in grams of one mole of a substance.
  2. A substance that slows down or prevents a particular chemical reaction or other process, or that reduces the activity of a particular reactant, catalyst, or enzyme.
  3. Gain of electrons.
  4. Is a substance that is formed as the result of a chemical reaction.
  5. A process in which one or more substances, the reactants, are converted to one or more different substances called the products.
  6. Loss of electrons.
  7. of reaction: The speed at which reactants are converted in products.
  8. For any system closed to all transfers of matter and energy, the mass of the system must remain constant overtime, as systems mass cannot change, so quantity cannot be added or removed.
  9. A substance that takes part in and undergoes chase during a reaction.
Down
  1. A substance produced by a living organism that acts as a catalyst to bring about a specific biochemical reaction.
  2. A type of lettering form written lower than the things around it. In chemical formulas the number of atoms in molecule is written in this manner
  3. is a chemical equation with the same number of atoms of each element on both sides of the arrow.
  4. is the number in front of the formula, that is related to the properties of the products. For example 2 H20 means there are two molecules of water.
  5. A representation of a chemical reaction using symbols of the elements to indicate the amount of substance, usually in moles, of each reactant and product.
  6. of a substance that contains 6.02x10^23 particles of that substance.
  7. reaction: Are those which absorb energy from the surroundings and result in a net decrease in temperature.
  8. A chemical reaction that releases energy in the form of light or heat.
  9. A substance that increases in the rate of a chemical reaction without itself undergoing any permanent chemical change.

18 Clues: Gain of electrons. • Loss of electrons. • Mass in grams of one mole of a substance. • Is a substance that is formed as the result of a chemical reaction. • of a substance that contains 6.02x10^23 particles of that substance. • of reaction: The speed at which reactants are converted in products. • A substance that takes part in and undergoes chase during a reaction. • ...

Chemical Reactions 2017-05-03

Chemical Reactions crossword puzzle
Across
  1. / organic group which has one or more electrons available for bonding
  2. / negatively charged ion
  3. / multiplicative factor
  4. / substance that changes the rate of a chemical reaction without being consumed or changed
  5. / released when a chemical compound reacts to produce new compounds
  6. / molecular ion with two or more atoms covalently bonded
  7. / all the diatomic elements Hydrogen, oxygen, fluorine, bromine, iodine, nitrogen, and chlorine
  8. / chemical process which requires heat
Down
  1. / consisting of two atoms
  2. / nonconductive element which lacks luster
  3. / being the same in quantity
  4. / chemical reaction in which heat is released
  5. / any chemical change in which one species is oxidized (loses an electron)
  6. / solid that is produced as a result of a chemical reaction in a solution
  7. / positively charged ion
  8. / oxidation reaction of an organic compound in which heat is released
  9. / a conductive element

17 Clues: / a conductive element • / multiplicative factor • / negatively charged ion • / positively charged ion • / consisting of two atoms • / being the same in quantity • / chemical process which requires heat • / nonconductive element which lacks luster • / chemical reaction in which heat is released • / molecular ion with two or more atoms covalently bonded • ...

Final Review 2017-12-17

Final Review crossword puzzle
Across
  1. / a system in which matter cannot enter or escape
  2. / substance that is present in a solution in the largest amount
  3. / fire is this type of change
  4. / the solution produced when too much solute is added to the solvent
  5. / mixture containing small, undissolved particles
  6. / a system in which matter can enter or escape
  7. / this type of solution has a lot of solute in the solvent
  8. in which particles are easily seen and separated
  9. / the amount of solute a solvent is able to dissolve
  10. / a type of change that does not chemically alter the object
  11. / on the right side of a chemical equation
Down
  1. / this chemical ____ is the easy way of naming a compound
  2. / substance that is dissolved by the solvent
  3. / substance that increases activation energy of a chemical reaction
  4. / substance that lowers activation energy of a chemical reaction
  5. / amount of substance in a given volume
  6. / type of reaction that swaps elements in compounds
  7. / type of reaction that breaks down a compound into multiple products
  8. / type of reaction that combines multiple reactants to form one product
  9. / mixture containing a solute and solvent
  10. / on the left side of a chemical equation
  11. / this type of solution has a little amount of solute dissolved in the solvent

22 Clues: / fire is this type of change • / amount of substance in a given volume • / mixture containing a solute and solvent • / on the left side of a chemical equation • / on the right side of a chemical equation • / substance that is dissolved by the solvent • / a system in which matter can enter or escape • in which particles are easily seen and separated • ...

vocab 2024-04-24

vocab crossword puzzle
Across
  1. a fatty/waxy organic compound that is readily soluble in a nonpolar solvent and not in a polar solvent.
  2. a substance taking part in a chemical reaction
  3. made up of chemical "building blocks" that are called amino acids
  4. the minimum amount of energy which the reacting species must have to undergo a specified reaction
  5. the substance that the ezyme act upon
  6. the main use is to act as a catalyst to make the reaction faster without being changed in the process
  7. something capable of speeding up or initiating a chemical reaction
  8. made by molecules that combine to form proteins
  9. a molecule produced by a living organism
Down
  1. a nitrogen-containing organic compound that has the chemical properties of a base
  2. a substance that has very large molecules called macromolecules
  3. large biomolecules that have an essential role in all cells and viruses.
  4. acid a subunit of fats, oils, and waxes
  5. sugar molecules
  6. an important sugar in bodies used to make their DNA
  7. a region where catalytic energy occurs
  8. combined to other identical molecules to form a polymer
  9. the chemical breakdown of a compound due to reaction with water
  10. a result from an action or process
  11. a chemical element found in nature

20 Clues: sugar molecules • a result from an action or process • a chemical element found in nature • the substance that the ezyme act upon • a region where catalytic energy occurs • acid a subunit of fats, oils, and waxes • a molecule produced by a living organism • a substance taking part in a chemical reaction • made by molecules that combine to form proteins • ...

Matter vocab 2024-05-15

Matter vocab crossword puzzle
Across
  1. When you burn a fire it gives off ____?
  2. A science that deals with the composition, structure, and properties of substances and of the transformations that they undergo.
  3. Hydrogen
  4. Describes how a substance behaves during a physical reaction.
  5. The starting materials in a reaction that undergo a chemical change to form a product.
  6. The smallest unit of a substance.
  7. The force that holds a piece of matter together.
  8. Anything that has mass and takes up space.
  9. A substance that is formed as the result of a chemical reaction.
  10. Chemical reactions where chemical bonds are either created, broken, or both.
  11. The amount of space the object takes up.
  12. An attraction between atoms.
Down
  1. Everything that can make change or cause something to react has ____?
  2. The measure of hotness or coldness (Fahrenheit,Celsius).
  3. Chemical reactions in which the reactants absorb heat energy from the surroundings to form products.
  4. A process in which one or more substances are converted to one or more different substances.
  5. Describes how a substance behaves during a chemical reaction.
  6. The material involved in the change are the same before and after the change
  7. Two or more substances that are mixed together.
  8. The amount of matter that makes up an object.
  9. anything that gives off heat (opposite of endothermic.)
  10. Basic particles of the chemical elements.
  11. H2O

23 Clues: H2O • Hydrogen • An attraction between atoms. • The smallest unit of a substance. • When you burn a fire it gives off ____? • The amount of space the object takes up. • Basic particles of the chemical elements. • Anything that has mass and takes up space. • The amount of matter that makes up an object. • Two or more substances that are mixed together. • ...

test review 2024-10-29

test review crossword puzzle
Across
  1. Reaction absorbing heat energy from its surroundings.
  2. Two or more atoms chemically bonded together.
  3. Equation: Representation of a chemical reaction using symbols.
  4. Atoms of the same element with different neutron counts.
  5. Smallest unit of an element, containing protons, neutrons, electrons.
  6. Atom or molecule with an electrical charge due to electron gain/loss.
  7. Gain of electrons during a chemical reaction.
  8. Light wave with frequencies higher than visible light.
  9. Bond: Bond where atoms share electron pairs.
  10. The part of the electromagnetic spectrum detectable by human eyes.
  11. Substance that donates protons (H⁺ ions) in solution.
  12. Substance that increases reaction rate without being consumed.
  13. Loss of electrons during a chemical reaction.
  14. Electrons: Electrons in the outer shell involved in chemical bonding.
  15. Scale indicating the acidity or basicity of a solution.
  16. Refers to microwaves; electromagnetic waves with shorter wavelengths than radio.
  17. A wave that travels through a medium, carrying audible energy.
  18. Bond: Bond formed by attraction between oppositely charged ions.
Down
  1. Substance formed as a result of a chemical reaction.
  2. Reaction where energy is given off to its surroundings
  3. Pure substance of only one type of atom.
  4. waves that are a form of radiation that travel through the universe
  5. Electromagnetic wave visible to the human eye.
  6. the particles of the medium vibrate at right angles to the direction that the energy travels
  7. wave that moves in the same direction as the way in which the particles are moving
  8. Starting substance in a chemical reaction.
  9. Lowest point on a wave, opposite the crest.
  10. Homogeneous mixture of two or more substances.
  11. Substance that accepts protons or donates hydroxide ions (OH⁻).
  12. Number of wave cycles passing a point per second.
  13. Highest point on a wave, where displacement is maximum.
  14. Height of a wave from rest to crest or trough.
  15. Substance made of two or more elements chemically combined.

33 Clues: Pure substance of only one type of atom. • Starting substance in a chemical reaction. • Lowest point on a wave, opposite the crest. • Bond: Bond where atoms share electron pairs. • Two or more atoms chemically bonded together. • Gain of electrons during a chemical reaction. • Loss of electrons during a chemical reaction. • Electromagnetic wave visible to the human eye. • ...

BOUNS POINTS: Crossword from Enzymes Lesson 2022-10-17

BOUNS POINTS: Crossword from Enzymes Lesson crossword puzzle
Across
  1. transmit genetic information/store directions for making proteins
  2. a chemical reaction that releases energy as heat
  3. reaction examples include ripping of paper or melting of ice
  4. large molecules to small molecules (release energy/heat)
  5. the resulting materials at the end of a chemical reaction
  6. change one substance into another
Down
  1. store long-term energy and form protective barriers
  2. the energy needed to start a chemical reaction
  3. enzymes are an example of this type of macromolecule
  4. a chemical reaction that absorbs energy
  5. examples include frying an egg or rusting of metal
  6. the starting materials in a chemical reaction
  7. complex chemistry in the body
  8. small molecules are built into large molecules (need energy/heat)
  9. A main source of energy for organisms in the form of sugar or starches

15 Clues: complex chemistry in the body • change one substance into another • a chemical reaction that absorbs energy • the starting materials in a chemical reaction • the energy needed to start a chemical reaction • a chemical reaction that releases energy as heat • examples include frying an egg or rusting of metal • store long-term energy and form protective barriers • ...

perfect 10 2023-03-01

perfect 10 crossword puzzle
Across
  1. representation of a chemical reaction in symbols
  2. matter can neither be created nor destroyed
  3. something that creates a chemical reaction
  4. any substance present at the start of a chemical reaction
  5. result of a chemical reaction
  6. chemical reaction that involves releasing energy in heat or light form
Down
  1. a solid that is created when two solutions are mixed
  2. one is when energy can come and leave and the other is the opposite
  3. the process of turning one or more substances into new substances
  4. reaction that absorbs heat
  5. number placed infront of a chemical equation
  6. number next to a chemical reaction

12 Clues: reaction that absorbs heat • result of a chemical reaction • number next to a chemical reaction • something that creates a chemical reaction • matter can neither be created nor destroyed • number placed infront of a chemical equation • representation of a chemical reaction in symbols • a solid that is created when two solutions are mixed • ...

Week 5 Vocabulary List 2025-03-25

Week 5 Vocabulary List crossword puzzle
Across
  1. substances that are made during a chemical reaction
  2. uncontrolled cell growth
  3. structure that contains genetic material in a condensed form
  4. a catalyst that speeds up chemical reactions by lowering activation energy
  5. cell division that is used to repair, replace, and for asexual reproduction
  6. molecule that speeds up chemical reactions by lowering activation energy
  7. substances that are changed during a chemical reaction
  8. area where sister chromatids are attached
  9. a mass of cells growing in one place due to cancer
Down
  1. process that changes one set of molecules into a new set of molecules
  2. name for reactants in an enzyme catalyzed reaction
  3. a copy of a chromosome
  4. division of cytoplasm
  5. DNA in a loose state
  6. a tumor that is cancerous
  7. energy needed to start a chemical reaction
  8. a tumor that doesn't move non-cancer
  9. organelle that moves chromosomes during cell division
  10. stages G1, S, G2 a cell must complete before cell division
  11. when a cell goes through mitosis to make identical cells

20 Clues: DNA in a loose state • division of cytoplasm • a copy of a chromosome • uncontrolled cell growth • a tumor that is cancerous • a tumor that doesn't move non-cancer • area where sister chromatids are attached • energy needed to start a chemical reaction • name for reactants in an enzyme catalyzed reaction • a mass of cells growing in one place due to cancer • ...

chemistry compo 2020-03-29

chemistry compo crossword puzzle
Across
  1. subatomic particle with no mass and negative electrical charge
  2. any species that increases the concentration of OH- in an aqueous solution
  3. an ion with a negative charge
  4. the number of electrons needed to fill the outermost shell of an atom
  5. the resulting substance of a physical or chemical reaction
  6. produce salts when reacting with metals; Group 17 of the Periodic Table
  7. a lasting attraction between atoms, ions or molecults that enables the formation of chemical compounds
  8. any species that increases the concentration of H+ in an aqueous solution
  9. an electrically neutral group of two or more atoms held together by chemical bonds
  10. a chemical reaction in which heat is absorbed
  11. center of a an atom
  12. metallic element that has valence electrons in two shells instead of one
  13. a structure made of ions
  14. substance that is changed in a physical or chemical reaction
  15. a baryon considered to be composed of two up quarks and one down quark
Down
  1. complete transfer of valence electrons between atoms
  2. a baryon considered to be composed of two down quarks and one up quark
  3. a chemical element with metal and nonmetal properties
  4. compound that contains exactly two different elements
  5. a column of elements in the periodic table
  6. also known as the lithium family of elements
  7. molecular bond; a chemical bond that involves the sharing of electron paris between
  8. a group of rare gases that exhibit great stability and extremely low reaction rates
  9. the theory that all matter is made up of atoms
  10. the loss of electrons during a reaction by a molecule, atom or ion
  11. a chemical reaction that releases energy through light or heat
  12. an ion with a positive charge
  13. a chemical element that mostly lacks the characteristics of a metal
  14. a species of atoms which all have the same number of protons in their atomic nuclei
  15. a chemical reaction in which the oxidation states (charges) of atoms are changed

30 Clues: center of a an atom • a structure made of ions • an ion with a negative charge • an ion with a positive charge • a column of elements in the periodic table • also known as the lithium family of elements • a chemical reaction in which heat is absorbed • the theory that all matter is made up of atoms • complete transfer of valence electrons between atoms • ...

chapter 2: chemistry of life 2018-04-03

chapter 2: chemistry of life crossword puzzle
Across
  1. / one particular type of atom, and it cannot be broken down into a simpler substance by ordinary chemical means.
  2. / the attraction among molecules of different substances.
  3. / a polymer made of monomers called amino acids.
  4. / forms through the electrical force between oppositely charged ions.
  5. / a compound that releases a proton when it dissolves in water.
  6. / a chemical reaction releases more energy than it absorbs.
  7. / a substance that decreases the activation energy needed to start a chemical reaction, and increases the rate of the chemical reaction.
  8. / compounds that remove H+ ions from a solution.
  9. / each subunit in the complete molecule.
  10. / polymers that are made up of monomers called nucleotides.
  11. / a macromolecule made of many monomers bonded together.
  12. / change substances into different substances by breaking and forming chemical bonds.
  13. / the substance changed during a chemical reaction.
  14. / two or more atoms held together by covalent bonds.
Down
  1. / a substance that dissolves in a solvent.
  2. / the attraction among molecules stick to each other.
  3. / a homogeneous mixture.
  4. / the specific reactants that an enzyme acts one.
  5. / molecules that contain carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur.
  6. / an atom that has gained or lost one or more electrons.
  7. / the substance that is present in the greater amount and that dissolves another substance.
  8. / nonpolar molecules that include fats, oils, and cholesterol.
  9. / the amount of energy that needs to be absorbed for a chemical reaction to start.
  10. / molecules composed of carbon, hydrogen, and oxygen, and they include sugars and starches.
  11. / chains of carbon atoms bonded to hydrogen atoms.
  12. / The smallest basic unit of matter.
  13. / reached when both the reactants and products are made at the same rate.
  14. / forms when atoms share a pair of electrons.
  15. / the substances made by a chemical reaction.
  16. / catalysts for chemical reactions in living things.
  17. / the amount of energy that will break a bond between two atoms.
  18. / a chemical reaction absorbs more energy than it releases.
  19. / a substance made of atoms of different elements bonded together in a certain ratio.

33 Clues: / a homogeneous mixture. • / The smallest basic unit of matter. • / each subunit in the complete molecule. • / a substance that dissolves in a solvent. • / forms when atoms share a pair of electrons. • / the substances made by a chemical reaction. • / a polymer made of monomers called amino acids. • / compounds that remove H+ ions from a solution. • ...

Stoichiometry 2024-04-01

Stoichiometry crossword puzzle
Across
  1. The mass of one mole of a substance, in grams per mole (g/mol).
  2. A representation of a chemical reaction, showing the reactants on the left side and the products on the right side, with an arrow indicating the direction of the reaction.
  3. Numbers placed in front of chemical formulas in a balanced equation to tell the relative number of moles of each substance involved in the reaction.
  4. The reactant that is not completely consumed in a chemical reaction because there is more of it than required to react with the limiting reactant.
  5. The ratio of the masses of one substance to the masses of another substance in the chemical reaction.
  6. The substances that go through a chemical reaction to form products.
  7. The number of particles (atoms, molecules, ions, etc.) in one mole of a substance. 6.022×10^23
  8. The calculations of products and reactants in a chemical reaction
Down
  1. An equation representing a chemical reaction where the number of atoms of each element is the same on both sides of the equation.
  2. The ratio of the number of moles of one substance to the number of moles of another substance in a balanced equation.
  3. The reactant that is consumed in a chemical reaction, limiting the amount of product formed.
  4. The substances that are formed as a result of a chemical reaction between reactants.
  5. A process in which one or more substances are converted into different substances through the ordering of atoms.
  6. A unit to measure the amount of a substance. One mole of a substance contains Avogadro's number of particles.
  7. A number written to the right and below an element's symbol in a chemical formula, indicating the number of atoms of that element in a molecule.

15 Clues: The mass of one mole of a substance, in grams per mole (g/mol). • The calculations of products and reactants in a chemical reaction • The substances that go through a chemical reaction to form products. • The substances that are formed as a result of a chemical reaction between reactants. • ...

TOPIC 2: FORMULAS & EQUATIONS 2023-09-17

TOPIC 2: FORMULAS & EQUATIONS crossword puzzle
Across
  1. describes a reaction that absorbs heat
  2. the composition of a substance is changed
  3. does not alter the chemical properties of a substance
  4. covalently bonded group of atoms with a net electrical charge
  5. the one, two, or three letter designation of an element
  6. the smaller number written after a chemical symbol
  7. simplest integer ratio in a compound
  8. information that is either counted or measured
Down
  1. smallest unit of a covalently bonded substance
  2. information that is neither counted or measured
  3. symbols and subscripts use to represent a chemical substance
  4. a substance formed in a chemical reaction
  5. another term for decomposition into simpler substances
  6. formed by two identical covalently bonded atoms
  7. an element takes the place of a less reactive element
  8. ions exchange places
  9. describes a reaction that releases heat
  10. two or more substances combine to form one product
  11. the number placed before a formula
  12. a starting substance in a chemical reaction

20 Clues: ions exchange places • the number placed before a formula • simplest integer ratio in a compound • describes a reaction that absorbs heat • describes a reaction that releases heat • a substance formed in a chemical reaction • the composition of a substance is changed • a starting substance in a chemical reaction • smallest unit of a covalently bonded substance • ...

Chemistry crossword 2015-11-13

Chemistry crossword crossword puzzle
Across
  1. something that helps speed up the chemical reaction
  2. positively charged centre of an atom
  3. a chemical reaction in which heat is abosorbed
  4. able to form the object to something else without breaking it
  5. a compound made from a metal and non-metal elements
  6. a change where a new substance is made
  7. the most reactive element
  8. a compound made with 2 non-metal elements
  9. an experiment in which is one or more products of a chemical reaction can escape
  10. how well the element or compound is able to conduct electricity
  11. a group of atoms joined by covalent bonds
  12. a group of elements that are the most reactive non-metals
  13. hydogen's symbol
  14. a combination of pure chemicals
Down
  1. this is a principle saying that matter cannot be gained or lost in a chemical reaction
  2. a chemical reaction that releases heat
  3. chemical combination of 2 ore more elements in a specific ratio
  4. the metals found in group 1
  5. an element that has the bot metallic and non-metallic properties
  6. number the sum of the number of protons and neutrons in an atom
  7. a change in the appearance.
  8. water's chemical formula
  9. a group of non-metal elements that are the most stable
  10. substance that has a strong resistance to the flow of electricity
  11. neutral particle in the nucleus of an atom

25 Clues: hydogen's symbol • water's chemical formula • the most reactive element • the metals found in group 1 • a change in the appearance. • a combination of pure chemicals • positively charged centre of an atom • a chemical reaction that releases heat • a change where a new substance is made • a compound made with 2 non-metal elements • a group of atoms joined by covalent bonds • ...

Chemistry Crossword 2015-11-19

Chemistry Crossword crossword puzzle
Across
  1. Catalyst involved in a chemical reaction in living things.
  2. The smallest part of an element that is representative of that element.
  3. A material that that electric charge can move through easily.
  4. Shiny, malleable, ductile element that conducts electricity.
  5. Chemical reaction that takes place in cell.
  6. Change of state from a liquid to gas.
  7. Chemical combination of two or more elements in a specific ratio.
  8. Chemical reaction that releases energy.
  9. Anything that has mass and occupies space.
  10. Slow chemical change that occurs when oxygen in the air reacts with a metal.
  11. Change of state from solid to liquid.
Down
  1. Number of protons in the nucleus of one atom of an element.
  2. Invisible negatively charged particle that orbits the nucleus of an atom.
  3. Measure of atomic mass.
  4. Description of a substance that can be pounded or rolled into sheet.
  5. Chemical reaction that absorb energy.
  6. Substance that helps a chemical reaction to proceed more quickly.
  7. Change of state from a gas to liquid.
  8. Change of state from a gas to solid.
  9. Vertical column of element in the periodic table.
  10. Group 17 elements in the periodic table.
  11. Substance that strongly resist the flow of electricity.
  12. Chang of state from a liquid to solid.
  13. Amount of mass in a given volume of a substance.
  14. Ability to work.

25 Clues: Ability to work. • Measure of atomic mass. • Change of state from a gas to solid. • Chemical reaction that absorb energy. • Change of state from a gas to liquid. • Change of state from a liquid to gas. • Change of state from solid to liquid. • Chang of state from a liquid to solid. • Chemical reaction that releases energy. • Group 17 elements in the periodic table. • ...

Unit 8 Crossword 2025-05-11

Unit 8 Crossword crossword puzzle
Across
  1. All ________, except Ca+2, Sr+2, Ba+2, Hg2+2, and Pb+2, are soluble.
  2. Illustrates a chemical reaction using symbols and chemical formulas or elements.
  3. _______ of a chemical reaction include the formation of a gas or a precipitate, a change in energy, or a change in color.
  4. AB + O2 → CO2 + H2O
  5. All ________, except those of group 1 and NH4+, are insoluble.
  6. All ________, except Ag+ and Pb+2, are soluble.
  7. _______Displacement AB + CD → AD + CB
  8. AB → A + B
  9. A + B → AB
  10. All _________ are soluble
  11. The small number found after a chemical symbol or ion. This shows the specific number of atoms in a molecule or compound.
  12. Starting materials
  13. Displacement will not occur and result in no reaction if C is more _______ than A (single displacement).
Down
  1. Most nonmetals are a ________
  2. _______ displacement A + BC → AC + B
  3. A compound dissolved in water is known as ______
  4. _______ separates when ionic compounds are dissolved in water
  5. Most metals are a ________
  6. Ending materials
  7. Chemical equations must be ________ because matter can not be created or destroyed during a reaction.
  8. The number found before a chemical formula or element to show how many atoms or molecules are involved in a chemical reaction.
  9. Carbon and hydrogen bonded together is a __________
  10. Only bromine and mercury are a _______
  11. BrINClHOF
  12. 3 elements in a compound is a ________

25 Clues: BrINClHOF • AB → A + B • A + B → AB • Ending materials • Starting materials • AB + O2 → CO2 + H2O • All _________ are soluble • Most metals are a ________ • Most nonmetals are a ________ • _______ displacement A + BC → AC + B • Only bromine and mercury are a _______ • 3 elements in a compound is a ________ • _______Displacement AB + CD → AD + CB • ...

Chemistry Crossword 2017-11-10

Chemistry Crossword crossword puzzle
Across
  1. Organic catalyst
  2. Made up of one type of matter and has a unique set of
  3. A chemical change, which absorbs heat energy.
  4. When material change state, but does not change composition
  5. An experiment kin which all reactants and all products of a chemical
  6. A pure substance formed when at least one metal and one non-metal
  7. Greek word for "same kind"
  8. A substance that reacts with another substance or substance
  9. Mixture in which the different substance are easy to see.
  10. Mixtures of two or more pure substance that look like one substance.
  11. A new substance produced in a chemical reaction between reactant.
  12. substance to form a new substance and gives off energy.
  13. A chemical change, which release heat energy.
Down
  1. are accounted for.
  2. Cloudy mixture that can be separated.
  3. chemical reaction to create a new substance with different products
  4. Greek word for "different kind"
  5. Hazardous household materials information system
  6. Is a chemical reaction that occurs when oxygen reacts with
  7. When two or more substance react to form a new substance(the new substance has new properties)
  8. An expirement in which one or more products of a chemical reaction can
  9. properties.
  10. Cloudy mixture that cannot be separated.
  11. Made up of two or more substances combined together.
  12. Workplace hazardous materials information system

25 Clues: properties. • Organic catalyst • are accounted for. • Greek word for "same kind" • Greek word for "different kind" • Cloudy mixture that can be separated. • Cloudy mixture that cannot be separated. • A chemical change, which absorbs heat energy. • A chemical change, which release heat energy. • Hazardous household materials information system • ...

Biomolecules Vocabulary 2024-04-26

Biomolecules Vocabulary crossword puzzle
Across
  1. Substance entered into and is altered in the curse of a chemical reaction
  2. Chemical compound that is found in living organisms
  3. Surface of which an organism lives on which the enzyme acts on
  4. Substance that speeds up a chemical reaction or lowers the pressure or temperature to start one
  5. Molecular subunit that is combined with similar subunits to form large molecules
  6. Initial energy input, that is later paid back as the reaction proceeds
  7. Element that takes a solid and forms it into either graphite or diamond
  8. Fatty compound that performs many types of functions in the body
  9. Molecule that is made up of amino acids
  10. Final result after a biological process occured
  11. Molecule that contains nitrogen and has chemical properties of the base
Down
  1. Common form of a chemical reaction where it is mostly used to break down the chemical bonds that exist between a particular substance
  2. Region of enzyme where substrate molecules undergo a chemical reaction
  3. A sugar molecule
  4. Large biomolecule that plays an essential role in all cells and viruses
  5. Building blocks of fat in our bodies and in the food we eat
  6. Large molecules that are made by bonding which is a series of building blocks
  7. Pentose sugar that is important for the formation of DNA or deoxyribonucleic acid
  8. Molecules that are combined to form proteins
  9. Protein that speeds up matabolism or chemical reactions in the body

20 Clues: A sugar molecule • Molecule that is made up of amino acids • Molecules that are combined to form proteins • Final result after a biological process occured • Chemical compound that is found in living organisms • Building blocks of fat in our bodies and in the food we eat • Surface of which an organism lives on which the enzyme acts on • ...

Types of Chemical Reactions, DEEPAK 10N 2024-04-30

Types of Chemical Reactions, DEEPAK 10N crossword puzzle
Across
  1. chemical reaction in which heat is released
  2. process involves gain of oxygen atoms or loss of hydrogen
  3. chemical decomposition caused by heat
  4. substance that increases the rate of the chemical reaction
  5. chemical reaction in which heat is absorbed
  6. substances in right hand side of chemical equations
Down
  1. a single substance breaks down to give two or more substances
  2. substances that undergo chemical change in the reaction
  3. atoms of a compound is replaced by another atom
  4. two or more substances combine to form single substance
  5. this type of decomposition reaction is used in black and white photograph
  6. solution in which solvent is water
  7. reactions in which insoluble salts are formed
  8. process involves loss of oxygen atoms or gain of hydrogen
  9. solution of this is used for whitewashing

15 Clues: solution in which solvent is water • chemical decomposition caused by heat • solution of this is used for whitewashing • chemical reaction in which heat is released • chemical reaction in which heat is absorbed • reactions in which insoluble salts are formed • atoms of a compound is replaced by another atom • substances in right hand side of chemical equations • ...

Unit 3 Crossword 2014-11-12

Unit 3 Crossword crossword puzzle
Across
  1. Rate the measure of change in concentration of the reactants
  2. production of chemical compounds that react from simpler materials
  3. decay; the process of decay
  4. cations and anions of elements switch places
  5. he concentration of reactants and products participating in a chemical reaction exhibit no net change over time
  6. any chemical reaction that involves the gaining of electrons
  7. Result of change
Down
  1. undergoes change
  2. a substance that increases the rate of a chemical reaction
  3. process of burning something
  4. release of energy in the form of heat
  5. one element replaces another element in a compound
  6. absorbs energy in the form of heat
  7. the interaction between oxygen molecules and all the different substances they may contact
  8. cause a substance to be deposited in solid from a solution
  9. Coefficients are the numbers placed before the reactants in a chemical equation
  10. Equation consists of the chemical formulas of the reactants and the chemical formula of the products

17 Clues: undergoes change • Result of change • decay; the process of decay • process of burning something • absorbs energy in the form of heat • release of energy in the form of heat • cations and anions of elements switch places • one element replaces another element in a compound • a substance that increases the rate of a chemical reaction • ...

Sophia Celona 2019-06-12

Sophia Celona crossword puzzle
Across
  1. Na+, Mg2+, Al3+,NH4+
  2. A chemical rule of thumb that reflects observation that atoms of main group elements tend to bond.
  3. An atom as a small, positively charged nucleus surrounded by electrons.
  4. The outer shell electron that is associated with an atom.
  5. An equation in which each side has the same number of atoms of each element.
  6. Any system closed to all transfers of matter and energy.
  7. A table of the chemical elements arranged in order of atomic number.
  8. Are substances initially presented in a chemical reaction that are consumed during the reaction to make products.
  9. A number in front of a chemical like 2H2o
  10. AB + CD ---> CB + AD
  11. A solution in which the solvent is water.
  12. A substance that is formed as the result of a chemical reaction.
  13. Bonds form to make atoms “happy” and allow atoms to follow the octet rule.
  14. A chemical bond that involves the sharing of electron pairs between atoms.
Down
  1. A reaction in which the atoms of one element replace the atoms of a second element.
  2. A chemical bond that generates two oppositely charged ions.
  3. 1s2s2p
  4. A reaction in which a single compound is broken down into simpler substances.
  5. A diagram that shows bonding between atoms of a molecule and the lone pairs of electrons that may exist in the molecule.
  6. CH4 + 2O2 ---> CO2 + 2H2O
  7. Chemical formulas in place of chemical names
  8. Nitrate ion (NO3-)
  9. A + B ---> AB
  10. Hydrochloric acid (HCL), Nitric acid (HNO3)
  11. A negatively charged ion

25 Clues: 1s2s2p • A + B ---> AB • Nitrate ion (NO3-) • Na+, Mg2+, Al3+,NH4+ • AB + CD ---> CB + AD • A negatively charged ion • CH4 + 2O2 ---> CO2 + 2H2O • A number in front of a chemical like 2H2o • A solution in which the solvent is water. • Hydrochloric acid (HCL), Nitric acid (HNO3) • Chemical formulas in place of chemical names • ...

CConley Chapter 13 2016-10-14

CConley Chapter 13 crossword puzzle
Across
  1. A chemical that donates a hydrogen ion
  2. Energy transfer from reactants to surroundings
  3. A reaction in which a single compound breaks down to form two or more simple substance
  4. A chemical reaction occurs when a substance reacts with oxygen
  5. When reaction and it's reverse action at the same rate
  6. Energy is transferred to reactants from surrounding
  7. A substance that undergoes a chemical change
  8. The amount of energy required to pull two bonds atoms a part
Down
  1. When a change in a chemical equilibrium is opposed until a new equilibrium is found
  2. Any substance that increases the rate of a chemical reaction
  3. A substance that is the result of the chemical change
  4. A reaction in which two or more substance combine to form a new compounds
  5. Change that takes place when two or more substance
  6. A chemical that accepts a hydrogen ion
  7. What is needed to start the process to break bonds or start a combustion reaction

15 Clues: A chemical that donates a hydrogen ion • A chemical that accepts a hydrogen ion • A substance that undergoes a chemical change • Energy transfer from reactants to surroundings • Change that takes place when two or more substance • Energy is transferred to reactants from surrounding • A substance that is the result of the chemical change • ...

Biomolecules Vocabulary 2024-04-30

Biomolecules Vocabulary crossword puzzle
Across
  1. A pentose sugar important to the formation of DNA
  2. The inputs of a chemical reation
  3. Element 6 on the periodic table and a substance that is in all living things
  4. Large biomolecules that play essential roles in all cells EX:DNA and RNA
  5. A region on an enzyme that binds to a protein or other substance during a reaction
  6. Energy formed by green plants from co2 and water during photosynthesis
  7. Fatty biomolecules that can be used for insulation and membrane in the body
  8. Proteins that help speed up metabolism or the chemical reactions in our bodies
Down
  1. A substance that changes the rate of a chemical reaction without undergoing any chemical change itself
  2. A molecule that contains nitrogen and has the chemical properties of a base
  3. The result of a chemical reaction
  4. A molecule that an enzyme interacts with
  5. Organic compounds that are important to body structures like muscle development
  6. Molecules used by all living things to make proteins
  7. Molecules produced by living organisms
  8. A chemical reaction in which water is used to break down the chemical bonds of a substance
  9. The minimum quantity of energy in which the reactants must posses to undergo a specified reaction
  10. Small atoms or molecules that bond together to form more complex structures like polymers
  11. The building blocks of fat in our bodies and the food that we eat
  12. Large molecules made by bonding a series of building blocks

20 Clues: The inputs of a chemical reation • The result of a chemical reaction • Molecules produced by living organisms • A molecule that an enzyme interacts with • A pentose sugar important to the formation of DNA • Molecules used by all living things to make proteins • Large molecules made by bonding a series of building blocks • ...

Biomolecules Vocabulary 2024-04-26

Biomolecules Vocabulary crossword puzzle
Across
  1. Substance entered into and is altered in the curse of a chemical reaction
  2. Chemical compound that is found in living organisms
  3. Surface of which an organism lives on which the enzyme acts on
  4. Substance that speeds up a chemical reaction or lowers the pressure or temperature to start one
  5. Molecular subunit that is combined with similar subunits to form large molecules
  6. Initial energy input, that is later paid back as the reaction proceeds
  7. Element that takes a solid and forms it into either graphite or diamond
  8. Fatty compound that performs many types of functions in the body
  9. Molecule that is made up of amino acids
  10. Final result after a biological process occured
  11. Molecule that contains nitrogen and has chemical properties of the base
Down
  1. Common form of a chemical reaction where it is mostly used to break down the chemical bonds that exist between a particular substance
  2. Region of enzyme where substrate molecules undergo a chemical reaction
  3. A sugar molecule
  4. Large biomolecule that plays an essential role in all cells and viruses
  5. Building blocks of fat in our bodies and in the food we eat
  6. Large molecules that are made by bonding which is a series of building blocks
  7. Pentose sugar that is important for the formation of DNA or deoxyribonucleic acid
  8. Molecules that are combined to form proteins
  9. Protein that speeds up matabolism or chemical reactions in the body

20 Clues: A sugar molecule • Molecule that is made up of amino acids • Molecules that are combined to form proteins • Final result after a biological process occured • Chemical compound that is found in living organisms • Building blocks of fat in our bodies and in the food we eat • Surface of which an organism lives on which the enzyme acts on • ...

Chapter 7 Vocabulary 2023-01-12

Chapter 7 Vocabulary crossword puzzle
Across
  1. eactions that occur when two different atoms or molecules interact to form a different molecule or compound
  2. reaction where heat energy is absorbed
  3. any chemical reaction in which the oxidation number of a molecule, atom, or ion changes by gaining or losing an electron
  4. substance present after a chemical reaction
Down
  1. symbolic representations of chemical reactions where reactants and the products are expressed
  2. a chemical reaction in which a fuel undergoes oxidation by reacting with an oxidising agent, resulting in the release of energy
  3. substance that undergoes change in a reaction
  4. a reaction in which one element is substituted for another element in a compound
  5. a chemical reaction in which one reactant breaks down into two or more products
  6. the amount of substance of a system which contains as many elementary entities
  7. energy stored in the bonds of chemical compounds, like atoms and molecules.
  8. reaction where heat engery is released
  9. a number placed in front of a chemical symbol or formula
  10. reactions in which the positive and negative ions of two ionic compounds exchange places to form two new compounds
  11. the ratio between the mass and the amount of substance

15 Clues: reaction where heat energy is absorbed • reaction where heat engery is released • substance present after a chemical reaction • substance that undergoes change in a reaction • the ratio between the mass and the amount of substance • a number placed in front of a chemical symbol or formula • energy stored in the bonds of chemical compounds, like atoms and molecules. • ...

Chemical Reactions and Enzymes 2022-11-15

Chemical Reactions and Enzymes crossword puzzle
Across
  1. will speed up the chemical reaction
  2. element or compounds produced in a chemical reaction
  3. changes one set of chemicals into another
  4. less is needed in a enzyme chemical reaction
  5. amino acid protein, speeds chemical reaction with specific substrate
Down
  1. energy needed to start a chemical reaction
  2. enzyme breaks down lactose in milk
  3. large molecule formed by many monomers
  4. reactant that engage in a enzyme speeded up reaction
  5. product of the iron (Fe)oxygen (O)
  6. elements that enter a chemical reaction
  7. small molecule, builds a large polymer

12 Clues: enzyme breaks down lactose in milk • product of the iron (Fe)oxygen (O) • will speed up the chemical reaction • large molecule formed by many monomers • small molecule, builds a large polymer • elements that enter a chemical reaction • changes one set of chemicals into another • energy needed to start a chemical reaction • less is needed in a enzyme chemical reaction • ...

your mom 2023-12-11

your mom crossword puzzle
Across
  1. a chemical reaction in which one element replaces another in a compound.
  2. a mathematical sentence that has two equal sides separated by an equal sign.
  3. the process by which dead organic substances are broken down into simpler organic or inorganic matter
  4. Chemical reactions that absorb (or use) energy overall
  5. a system for arranging the chemical elements.
  6. the appearance or form of the matter changes but the kind of matter in the substance does not.
  7. formed by the equal sharing of electrons from both participating atoms
Down
  1. the production of chemical compounds by reaction from simpler materials
  2. a reaction in which energy is released in the form of light or heat.
  3. occur when parts of two ionic compounds are exchanged, making two new compounds
  4. one of the first chemical reactions intentionally controlled by humans.
  5. a chemical element (such as boron, carbon, or nitrogen) that lacks the characteristics of a metal.
  6. the starting materials in a reaction that undergo a chemical change to form a product.
  7. opaque, lustrous elements that are good conductors of heat and electricity.
  8. any change that causes a new substance to be formed.
  9. a subatomic particle with a positive electrical charge
  10. a measure of how readily a substance undergoes a chemical reaction.
  11. the measurement of how tightly a material is packed together.
  12. Ionic bonds result from the attraction between oppositely charged ions.

19 Clues: a system for arranging the chemical elements. • any change that causes a new substance to be formed. • Chemical reactions that absorb (or use) energy overall • a subatomic particle with a positive electrical charge • the measurement of how tightly a material is packed together. • a measure of how readily a substance undergoes a chemical reaction. • ...

Complete and incomplete combustion 2024-05-15

Complete and incomplete combustion crossword puzzle
Across
  1. A solid that forms from a solution during a chemical reaction.
  2. The gain of electrons by a molecule, atom, or ion.
  3. The sticking together of particles of the same substance.
  4. The transition of a substance directly from the solid phase to the gas phase without passing through the intermediate liquid phase.
  5. The sticking together of particles of different substances.
  6. The loss of electrons by a molecule, atom, or ion.
  7. A substance that is formed as a result of a chemical reaction.
  8. The process of using electricity to drive a non-spontaneous chemical reaction.
Down
  1. A substance that increases the rate of a chemical reaction without being consumed in the process.
  2. A substance that takes part in and undergoes change during a reaction.
  3. A chemical reaction that absorbs energy from its surroundings.
  4. A state in which forward and reverse reactions occur at equal rates, resulting in no net change in the concentrations of reactants and products.
  5. A chemical reaction that releases energy in the form of heat.
  6. The decomposition of materials at high temperatures in an inert atmosphere.
  7. The chemical breakdown of a compound due to reaction with water.

15 Clues: The gain of electrons by a molecule, atom, or ion. • The loss of electrons by a molecule, atom, or ion. • The sticking together of particles of the same substance. • The sticking together of particles of different substances. • A chemical reaction that releases energy in the form of heat. • A solid that forms from a solution during a chemical reaction. • ...

Organic Chem Vocab 2022-01-26

Organic Chem Vocab crossword puzzle
Across
  1. an aromatic hydrocarbon
  2. chemical bond dissociation of a molecular bond by a process where each of the fragments (an atom or molecule) retains one of the originally bonded electrons.
  3. an atom or a molecule that in chemical reaction seeks an atom or molecule containing an electron pair available for bonding.
  4. a substance that enters into and is altered in the course of a chemical reaction.
  5. show the movement of single electrons during the breaking of the bond.
  6. a type of chemical reaction in which two molecules are combined to form a single molecule
  7. hydrocarbons that have double or triple covalent bonds between adjacent carbon atoms.
  8. An organic compound in which all the carbon atoms are connected by single bonds.
  9. compounds that contain exactly the same number of atoms
  10. one in which two or more organic compounds have the same molecular formulas but different structures.
  11. an organic reaction where two or more molecules combine to form a larger one
  12. a molecular fragment that departs with a pair of electrons in heterolytic bond cleavage.
Down
  1. a chemical reaction during which one functional group in a chemical compound is replaced by another functional group.
  2. a two-stage reaction process of an addition reaction followed by an elimination reaction.
  3. the simplest whole number ratio of atoms present in a compound.
  4. hydrocarbons that are the open chain compounds and also closed chains.
  5. a graphic representation of the molecular structure, showing how the atoms are possibly arranged in the real three-dimensional space.
  6. the process of cleaving/breaking a covalent bond where one previously bonded species takes both original bonding electrons from the other species.
  7. consists of the chemical symbols for the constituent elements followed by numeric subscripts describing the number of atoms of each element present in the molecule.
  8. an electron-rich molecule that can form covalent bonds by donating electrons to electron-poor sites.
  9. used in mechanisms to show the various electron pairs moving around

21 Clues: an aromatic hydrocarbon • compounds that contain exactly the same number of atoms • the simplest whole number ratio of atoms present in a compound. • used in mechanisms to show the various electron pairs moving around • hydrocarbons that are the open chain compounds and also closed chains. • show the movement of single electrons during the breaking of the bond. • ...

Characteristics of Chemical Reactions 2021-03-16

Characteristics of Chemical Reactions crossword puzzle
Across
  1. rearrangement of atoms to produce something new
  2. substance with unique chemical and physical properties
  3. matter includes mass, length and volume
  4. observed or measured without changing substance
  5. group of atoms bonded together
  6. atoms rearrange during chemical change
  7. insoluble solid formed from chemical reaction
  8. natural substance undergo a chemical process
  9. one or more substances change to make different
Down
  1. property depends on type of matter not amount
  2. substance produced in a chemical reaction
  3. substance that changes during a reaction
  4. basic unit of matter
  5. physical or chemical characteristics of matter
  6. single substance
  7. large amounts

16 Clues: large amounts • single substance • basic unit of matter • group of atoms bonded together • atoms rearrange during chemical change • matter includes mass, length and volume • substance that changes during a reaction • substance produced in a chemical reaction • natural substance undergo a chemical process • property depends on type of matter not amount • ...

Unit 5 Vocabulary to Know 2023-02-22

Unit 5 Vocabulary to Know crossword puzzle
Across
  1. the path or orbit electrons follow around the nucleus of an atom
  2. a combination of substances that can be physically separated from one another
  3. the substances that are formed during a chemical reaction; in a chemical reaction the arrows point toward the product
  4. tending to cause corrosion
  5. a chemical combination of two or more elements
  6. interaction between molecules that causes a chemical change, converting an existing substance into a new substance
Down
  1. not human-made
  2. a pure substance that cannot be broken down into simpler substances by chemical reactions
  3. made by humans
  4. chemical reaction that gives off heat energy
  5. a chemical reaction that absorbs heat energy
  6. a group of atoms held together by chemical bonds
  7. the substances present before a chemical reaction occurs; in a chemical reaction the arrow usually points away from the reactant(s)

13 Clues: not human-made • made by humans • tending to cause corrosion • chemical reaction that gives off heat energy • a chemical reaction that absorbs heat energy • a chemical combination of two or more elements • a group of atoms held together by chemical bonds • the path or orbit electrons follow around the nucleus of an atom • ...

C3.3 Types of chemical reactions 2021-05-18

C3.3 Types of chemical reactions crossword puzzle
Across
  1. the relative acidity or alkalinity of an aqueous solution
  2. a solution that resists changes in pH
  3. a substance that neutralises acids forming a salt and water only
  4. describes a substance that has gained oxygen, or lost electrons, in a chemical reaction
  5. a solution, not acidic or alkaline, with a pH of 7
  6. a solution in which the solvent is water
  7. describes a substance that has lost oxygen, or gained electrons, in a chemical reaction
  8. a measure of the amount of dissolved solute present in a solution
  9. ionic compounds that contain the carbonate ion
  10. a soluble base
  11. when a solution contains a relatively high amount of solute
  12. bubbling or fizzing observed in a chemical reaction
  13. to adjust the reading on an instrument to match the observed value with the value of the quantity being measured
  14. a reaction between an acid and a base or alkali, producing a salt plus water
  15. a gain of oxygen, or loss of electrons, by a substance in a chemical reaction
Down
  1. a type of chemical equation that models the change that happens to one reactant in a reaction
  2. a substance that reduces another substance by accepting oxygen or by donating electrons
  3. a chemical reaction in which one substance is reduced while another is oxidised
  4. a substance that oxidises another substance by donating oxygen or by accepting electrons
  5. ascale that measures relative acidity or alkalinity of an aqueous solution, from 0 (strongly acidic) through 7 (neutral), to 14 (strongly alkaline)
  6. a loss of oxygen, or gain of electrons, by a substance in a chemical reaction
  7. a solution with a relatively low amount of solute
  8. a substance that ionises in water, releasing hydrogen ions
  9. an acid that is fully ionised in aqueous solution
  10. acid only partially ionised in aqueous solution
  11. a compound formed when hydrogen ions in an acid are replaced by metal ions or ammonium ions.

26 Clues: a soluble base • a solution that resists changes in pH • a solution in which the solvent is water • ionic compounds that contain the carbonate ion • acid only partially ionised in aqueous solution • a solution with a relatively low amount of solute • an acid that is fully ionised in aqueous solution • a solution, not acidic or alkaline, with a pH of 7 • ...

8th Grade Chemistry 2013-06-12

8th Grade Chemistry crossword puzzle
Across
  1. negatively charged particles in atoms
  2. joining of atoms to form new substances
  3. smallest particle of matter and cannot be separated
  4. pure substance that can't be separated into simpler substances
  5. chemical and physical properties of elements are periodic functions of their atomic number
  6. center of the atom in a positively charged region
  7. a change a substance undergoes that changes its properties
  8. representation of an object or system
  9. vertical columns on the periodic table
  10. regular repeating pattern
  11. force of attraction that holds two atoms together
  12. good conductors, malleable, ductile, and shiny
  13. horizontal rows on the periodic table
Down
  1. description of a chemical reaction using chemical symbols and formulas
  2. notation for a compound that uses chemical symbols and numbers
  3. starting materials in a chemical reaction
  4. outermost energy level in an atom
  5. poor conductors, dull
  6. ending substance in a chemical reaction
  7. semi conductors, have properties of metals and nonmetals

20 Clues: poor conductors, dull • regular repeating pattern • outermost energy level in an atom • negatively charged particles in atoms • representation of an object or system • horizontal rows on the periodic table • vertical columns on the periodic table • joining of atoms to form new substances • ending substance in a chemical reaction • starting materials in a chemical reaction • ...

Chemistry Vocabulary 2024-03-19

Chemistry Vocabulary crossword puzzle
Across
  1. A chemical reaction that releases heat energy.
  2. A chemical reaction that absorbs heat energy.
  3. The new substances formed in a chemical reaction.
  4. A short way to show what elements are in a compound and how many of each there are.
  5. Two or more substances that join together.
  6. The substances you start with in a chemical reaction.
  7. Bonds formed by the attraction between positively and negatively charged ions
  8. Things that make up everything around us.
Down
  1. When substances change into different ones.
  2. Bonds formed when atoms share electrons.
  3. Small numbers written to show how many atoms of each element are in a compound
  4. Natural materials are things that come from nature, like wood or cotton. Synthetic materials are made by people, like plastic or nylon.
  5. Heat energy.
  6. The idea that matter cannot be created or destroyed in a chemical reaction, only rearranged.
  7. Substances that make chemical reactions happen faster.
  8. Pure substances made up of only one type of atom.
  9. Numbers written in front of chemical formulas to balance equations.

17 Clues: Heat energy. • Bonds formed when atoms share electrons. • Things that make up everything around us. • Two or more substances that join together. • When substances change into different ones. • A chemical reaction that absorbs heat energy. • A chemical reaction that releases heat energy. • The new substances formed in a chemical reaction. • ...

chemistry 2015-11-19

chemistry crossword puzzle
Across
  1. measures percent of hydrogen ions
  2. substance that helps a chemical reaction to proceed more quickly
  3. pure substance that can not be broken down
  4. the mass of the atom
  5. cloudy mixture in which tiny particles of one substance are held within another and particles cannot be separated out from the other substance
  6. chemical combination of two or more elements in a specific ratio
  7. a reaction that takes place when two
  8. substance that reacts with another substance or substances in a chemical reaction to create new substances with different properties
  9. a atom that has either gained or lost electrons
  10. neutral particle in the nucleus of an atom
  11. catalyst involved in chemical reactions in living thing things
  12. compound that dissolves in water to form a solution with a ph higher than 7
Down
  1. new substance produced in a chemical reaction between reactants
  2. substance that can be made into long wire
  3. group 18 elements in the periodic table the most and unreactive elements
  4. positively charged particle in the nucleus
  5. chemical reaction that occurs when oxygen reacts when oxygen reacts with a substance to form a new substance and give of energy
  6. device for producing electricity from chemical or solar energy
  7. group of atoms acting as one
  8. invisible negatively charged particle that orbits the nucleus of a atom
  9. creation of electrical circuit
  10. conductor through which electric current enters or leaves a device or material
  11. number of protons in the nucleus
  12. slow chemical change that occurs when oxygen in the air reacts with a metal
  13. Products of reaction that can escape

25 Clues: the mass of the atom • group of atoms acting as one • creation of electrical circuit • number of protons in the nucleus • measures percent of hydrogen ions • a reaction that takes place when two • Products of reaction that can escape • substance that can be made into long wire • positively charged particle in the nucleus • pure substance that can not be broken down • ...

physical science 2023-12-11

physical science crossword puzzle
Across
  1. to quickly refer to information about an element, like atomic mass and chemical symbol
  2. releases heat in chemical reaction
  3. the material involved in the change is structurally the same before and after the change.
  4. a substance that takes part in and undergoes change during a reaction
  5. a subatomic particle with a positive electrical charge
  6. on the left side on the periodic table
  7. a negatively charged subatomic particle that can be either bound to an atom or free
  8. a chemical process in which a substance reacts rapidly with oxygen and gives off heat.
  9. bond when pairs of electrons are shared by atoms.
  10. absorbs heat in chemical reaction
Down
  1. the process of equating one thing with another.
  2. a chemical reaction where two reactant ionic compounds exchange
  3. the complete transfer of valence electron(s) between atoms.
  4. the state or process of rotting decay.
  5. a change of materials into another, new materials with different properties and one or more than one new substances are formed
  6. the production of chemical compounds by reaction from simpler materials.
  7. a reaction in which one element replaces a similar element in a compound.
  8. a thing or person that is the result of an action or process.
  9. subatomic particles found inside the nucleus of every atom.
  10. the state or power of being reactive or the degree to which a thing is reactive.
  11. degree of consistency measured by the quantity of mass per unit volume
  12. an atom or molecule with a net electric charge due to the loss or gain of one or more electrons.
  13. one of two or more species of atoms of a chemical element with the same atomic number and position in the periodic table

23 Clues: absorbs heat in chemical reaction • releases heat in chemical reaction • the state or process of rotting decay. • on the left side on the periodic table • the process of equating one thing with another. • bond when pairs of electrons are shared by atoms. • a subatomic particle with a positive electrical charge • ...

chapter 2: chemistry of life 2018-04-03

chapter 2: chemistry of life crossword puzzle
Across
  1. / the substances made by a chemical reaction.
  2. / molecules that contain carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur.
  3. / forms through the electrical force between oppositely charged ions.
  4. / a macromolecule made of many monomers bonded together.
  5. / two or more atoms held together by covalent bonds.
  6. / a compound that releases a proton when it dissolves in water.
  7. / reached when both the reactants and products are made at the same rate.
  8. / The smallest basic unit of matter.
  9. / polymers that are made up of monomers called nucleotides.
  10. / change substances into different substances by breaking and forming chemical bonds.
  11. / molecules composed of carbon, hydrogen, and oxygen, and they include sugars and starches.
  12. / the amount of energy that will break a bond between two atoms.
  13. / a substance made of atoms of different elements bonded together in a certain ratio.
  14. / the specific reactants that an enzyme acts one.
  15. / the attraction among molecules of different substances.
  16. / a substance that dissolves in a solvent.
  17. / each subunit in the complete molecule.
Down
  1. / catalysts for chemical reactions in living things.
  2. / the attraction among molecules stick to each other.
  3. / the amount of energy that needs to be absorbed for a chemical reaction to start.
  4. / a polymer made of monomers called amino acids.
  5. / nonpolar molecules that include fats, oils, and cholesterol.
  6. / the substance that is present in the greater amount and that dissolves another substance.
  7. / a substance that decreases the activation energy needed to start a chemical reaction, and increases the rate of the chemical reaction.
  8. / a chemical reaction absorbs more energy than it releases.
  9. / forms when atoms share a pair of electrons.
  10. / chains of carbon atoms bonded to hydrogen atoms.
  11. / the substance changed during a chemical reaction.
  12. / a chemical reaction releases more energy than it absorbs.
  13. / an atom that has gained or lost one or more electrons.
  14. / a homogeneous mixture.
  15. / compounds that remove H+ ions from a solution.
  16. / one particular type of atom, and it cannot be broken down into a simpler substance by ordinary chemical means.

33 Clues: / a homogeneous mixture. • / The smallest basic unit of matter. • / each subunit in the complete molecule. • / a substance that dissolves in a solvent. • / the substances made by a chemical reaction. • / forms when atoms share a pair of electrons. • / a polymer made of monomers called amino acids. • / compounds that remove H+ ions from a solution. • ...

Science 2017-05-18

Science crossword puzzle
Across
  1. a simply sugar produce by photosynthesis
  2. a series of chemical reaction
  3. chemical that take part in chemical reaction
  4. type of acid
  5. type of gas
  6. endothermic reaction that takes place
  7. written description
  8. rain
  9. chemical produce in chemical reaction
Down
  1. boom
  2. digestion
  3. type of gas
  4. the movement of chemicals

13 Clues: boom • rain • digestion • type of gas • type of gas • type of acid • written description • the movement of chemicals • a series of chemical reaction • endothermic reaction that takes place • chemical produce in chemical reaction • a simply sugar produce by photosynthesis • chemical that take part in chemical reaction

Just for Fun 2019-05-02

Just for Fun crossword puzzle
Across
  1. Non-metals that are not reactive
  2. A substance that cannot be broken down into simpler substances by chemical means
  3. When atoms of two or more different non-metals combined, a _____ compound is formed
  4. Any substance with a pH of 7 when it is in aqueous solution
  5. The horizontal rows of a periodic table are called _______
  6. A type of chemical reaction where two elements combine to form a compound
  7. A positively charged ion
  8. The number of protons in an atom of an element
  9. The substance(s) that is/are produced during a chemical reaction
  10. A negatively charged ion
  11. A substance with a pH of less than 7 when it is in aqueous solution
Down
  1. A substance with a pH of greater than 7 when it is in aqueous solution
  2. A chemical reaction between an acid and a base that produces water and salt
  3. Metal elements that have high atomic mass
  4. Anything that has mass and volume
  5. A suspension of small, solid particles formed during a chemical reaction
  6. A substance that take part in and undergoes change during a chemical reaction
  7. A combination of pure substances is called a _______
  8. A pure substance made from two or more elements that are combined together chemically
  9. A bond formed when valence electrons are shared

20 Clues: A positively charged ion • A negatively charged ion • Non-metals that are not reactive • Anything that has mass and volume • Metal elements that have high atomic mass • The number of protons in an atom of an element • A bond formed when valence electrons are shared • A combination of pure substances is called a _______ • ...

Chemical Change 2014-05-12

Chemical Change crossword puzzle
Across
  1. change/A change that results in a new substances being formed
  2. chemical reaction that involves a combination of oxygen
  3. or phase of a substance
  4. process that involves oxygen, like burning a flame
  5. properties/properties that can be observe by your 5 senses
  6. chemical reaction that involves oxygen to produce a flame
  7. substance that you begin with in a chemical reaction
  8. chemical reaction that wears away a metal
Down
  1. a metal by covering it with a more reactive metal that will corrode first
  2. properties/properties that can describe how a substances
  3. substance that starts or speeds up a chemical reaction
  4. substance that is produced with in a chemical reaction
  5. change/A change that does not form a new substances but may form different states
  6. corrosion of iron
  7. catalyst for living things

15 Clues: corrosion of iron • or phase of a substance • catalyst for living things • chemical reaction that wears away a metal • process that involves oxygen, like burning a flame • substance that you begin with in a chemical reaction • substance that starts or speeds up a chemical reaction • substance that is produced with in a chemical reaction • ...

Reactions 2014-04-14

Reactions crossword puzzle
Across
  1. chemical bond formed when atoms share three pairs of electrons
  2. chemical reaction that breaks down into simpler products
  3. ion that is made of more than one atom
  4. Force that holds atoms together
  5. anything that has mass and occupies space
  6. Number in a chemical formula that tells the number of atoms in a molecule or the ration of elements in a compound
  7. part of solution present in a lesser amount and dissolved by the solvent
  8. solid that forms from a solution during chemical reaction.
Down
  1. substance formed as result of chemical reaction
  2. mixture of two or more elements, one of which is metal
  3. substance that doesn't change identity
  4. Group of atoms that become electrically charged
  5. Compound that consists of positive and negative ions
  6. orderly, three dimensional pattern of ions or atoms in a solid
  7. study of the properties of matter
  8. system in which matter can enter from or escape to the surrounding
  9. chemical bond formed when atoms share two pairs of electrons
  10. substance that undergoes change in a chemical reaction
  11. covalent bond in which electrons are shared equally
  12. attraction between oppositely charged ions

20 Clues: Force that holds atoms together • study of the properties of matter • substance that doesn't change identity • ion that is made of more than one atom • anything that has mass and occupies space • attraction between oppositely charged ions • substance formed as result of chemical reaction • Group of atoms that become electrically charged • ...

24 vocab 2022-10-16

24 vocab crossword puzzle
Across
  1. An atom of group of atoms that has a positive or negative electric charge; forms by gaining or losing electrons.
  2. a scientific law stating that during a chemical reaction matter is not created or destroyed
  3. A usually reversible change in the physical properties of a substance, as size and shape.
  4. a combination of two or more substances. That do not combine chemically but remain the same individual substances
  5. a vertical column in the periodic table of elements that have similar properties.
  6. a substance made up of two or more different types of atoms bonded together
  7. A neutral particle located in an atom’s nucleus.
  8. a substance that cannot be broken down into a simpler substance by ordinary chemical changes
  9. The number before a chemical formula indicating how many molecules are involved in a chemical reaction.
  10. The total number of protons in an atom’s nucleus.
  11. A negatively charged particle located outside of an atom’s nucleus about 2000 times smaller than either a proton or neutron.
  12. A substance formed by a chemical reaction; made by the rearrangement of atoms and bonds in reactants.
Down
  1. The total number of protons and neutrons in an atom’s nucleus.
  2. a substance that is not uniform throughout.
  3. A solid substance that forms as a result of a chemical reaction between chemicals in two liquids.
  4. a substance that is evenly spread throughout particles not distinguishable
  5. An atom of one element that has a different number of neutrons than another atom of the same element.
  6. a substance that is present at the beginning of a chemical reaction takes. Part in the reaction and is changed into a new substance
  7. A change of one substance into another substance.
  8. a horizontal row in the periodic table of the elements that have similar properties.
  9. A group of atoms that are held together by covalent bonds so that they move together.
  10. A positively charged particle located in an atom’s nucleus.
  11. The number written slightly below and to the right of a chemical symbol that shows how many atoms of an element are in a compound.
  12. A substance that increases the rate of a chemical reaction but is not consumed by the reaction.

24 Clues: a substance that is not uniform throughout. • A neutral particle located in an atom’s nucleus. • A change of one substance into another substance. • The total number of protons in an atom’s nucleus. • A positively charged particle located in an atom’s nucleus. • The total number of protons and neutrons in an atom’s nucleus. • ...

Unit 3 Crossword 2014-11-12

Unit 3 Crossword crossword puzzle
Across
  1. the interaction between oxygen molecules and all the different substances they may contact
  2. Coefficients are the numbers placed before the reactants in a chemical equation
  3. absorbs energy in the form of heat
  4. Equation consists of the chemical formulas of the reactants and the chemical formula of the products
  5. he concentration of reactants and products participating in a chemical reaction exhibit no net change over time
  6. undergoes change
  7. one element replaces another element in a compound
  8. cause a substance to be deposited in solid from a solution
  9. a substance that increases the rate of a chemical reaction
Down
  1. Rate the measure of change in concentration of the reactants
  2. any chemical reaction that involves the gaining of electrons
  3. production of chemical compounds that react from simpler materials
  4. process of burning something
  5. Result of change
  6. release of energy in the form of heat
  7. cations and anions of elements switch places
  8. decay; the process of decay

17 Clues: Result of change • undergoes change • decay; the process of decay • process of burning something • absorbs energy in the form of heat • release of energy in the form of heat • cations and anions of elements switch places • one element replaces another element in a compound • cause a substance to be deposited in solid from a solution • ...

your mom 2023-12-11

your mom crossword puzzle
Across
  1. a chemical reaction in which one element replaces another in a compound.
  2. a mathematical sentence that has two equal sides separated by an equal sign.
  3. the process by which dead organic substances are broken down into simpler organic or inorganic matter
  4. Chemical reactions that absorb (or use) energy overall
  5. a system for arranging the chemical elements.
  6. the appearance or form of the matter changes but the kind of matter in the substance does not.
  7. formed by the equal sharing of electrons from both participating atoms
Down
  1. the production of chemical compounds by reaction from simpler materials
  2. a reaction in which energy is released in the form of light or heat.
  3. occur when parts of two ionic compounds are exchanged, making two new compounds
  4. one of the first chemical reactions intentionally controlled by humans.
  5. a chemical element (such as boron, carbon, or nitrogen) that lacks the characteristics of a metal.
  6. the starting materials in a reaction that undergo a chemical change to form a product.
  7. opaque, lustrous elements that are good conductors of heat and electricity.
  8. any change that causes a new substance to be formed.
  9. a subatomic particle with a positive electrical charge
  10. a measure of how readily a substance undergoes a chemical reaction.
  11. the measurement of how tightly a material is packed together.
  12. Ionic bonds result from the attraction between oppositely charged ions.

19 Clues: a system for arranging the chemical elements. • any change that causes a new substance to be formed. • Chemical reactions that absorb (or use) energy overall • a subatomic particle with a positive electrical charge • the measurement of how tightly a material is packed together. • a measure of how readily a substance undergoes a chemical reaction. • ...

Chemical Reaction Vocabulary 2013-12-16

Chemical Reaction Vocabulary crossword puzzle
Across
  1. states that mass can't be created or destroyed in chemical or physical changes.
  2. a representation of a chemical reaction that uses symbols to show the relationship.
  3. the smallest amount of energy that need to react.
  4. any compound that increases the number of hydronium ion when dissolved.
  5. process in which 1 or more substances change to make to make 1 or more new substances.
Down
  1. a combination of chemical symbols and numbers to represent a substance.
  2. substance that changes color in the presence of a acid or a base.
  3. chemical reaction a that requires heat.
  4. a reaction in which heat is released.
  5. any compound that increases the number of hydronium ion when dissolved in water.
  6. states energy can't be destroyed or created.
  7. substance that slows down or stops a chemical reaction.
  8. a substance that speeds up a reaction without being permanently changed.

13 Clues: a reaction in which heat is released. • chemical reaction a that requires heat. • states energy can't be destroyed or created. • the smallest amount of energy that need to react. • substance that slows down or stops a chemical reaction. • substance that changes color in the presence of a acid or a base. • ...

Chemical Reaction Vocabulary 2022-02-23

Chemical Reaction Vocabulary crossword puzzle
Across
  1. Letters and numbers showing the atoms to make a substance
  2. process in which atoms rearrange to form new substances
  3. Tiny pieces of matter that everything is made of
  4. Something that helps us understand by making it easier to see
  5. Negative pieces of an atom, outside the nucleus
  6. Something that is made of atoms
Down
  1. Positive pieces of an atom, in nucleus
  2. The relative size of things
  3. a starting substance that is part of a chemical reaction
  4. A group of atoms joined together in a particular way
  5. No charge, in nucleus
  6. Something that can be observed in a substance
  7. an ending substance that is made during a chemical reaction

13 Clues: No charge, in nucleus • The relative size of things • Something that is made of atoms • Positive pieces of an atom, in nucleus • Something that can be observed in a substance • Negative pieces of an atom, outside the nucleus • Tiny pieces of matter that everything is made of • A group of atoms joined together in a particular way • ...

Haley Nowak- chapter 13 2016-10-12

Haley Nowak- chapter 13 crossword puzzle
Across
  1. a substance that donates hydrogen ions
  2. a measure of the acidity of a solution equal to the negative logarithm of the hydronium ion concentration
  3. the process by which a reactant gains one or more electrons
  4. description of a solution in which the hydronium ion concentration is equal to the hydroxide ion concentration
  5. the minimum energy required in order for a chemical reaction to proceed
  6. description of a chemical reaction in which there is a net absorption of energy
  7. any substance that increases the rate of a chemical reaction without itself being consumed by the reaction
  8. the process by which a reactant loses one or more electrons
Down
  1. the reacting substances in a chemical reaction
  2. a polyatomic ion made by adding a hydrogen ion to a water molecule
  3. a substance that accepts hydrogen ions
  4. description of a chemical reaction in which there is a net release of energy
  5. a polyatomic ion made by removing a hydrogen ion from a water molecule
  6. the new materials formed in a chemical reaction
  7. a rapid exothermic oxidation- reduction reaction between a material and a molecular oxygen

15 Clues: a substance that accepts hydrogen ions • a substance that donates hydrogen ions • the reacting substances in a chemical reaction • the new materials formed in a chemical reaction • the process by which a reactant gains one or more electrons • the process by which a reactant loses one or more electrons • ...

Just for Fun 2019-05-02

Just for Fun crossword puzzle
Across
  1. Any substance with a pH of 7 when it is in aqueous solution
  2. Anything that has mass and volume
  3. A substance that take part in and undergoes change during a chemical reaction
  4. A combination of pure substances is called a _______
  5. A substance with a pH of less than 7 when it is in aqueous solution
  6. A suspension of small, solid particles formed during a chemical reaction
  7. A substance with a pH of greater than 7 when it is in aqueous solution
  8. Metal elements that have high atomic mass
  9. The number of protons in an atom of an element
Down
  1. A bond formed when valence electrons are shared
  2. The substance(s) that is/are produced during a chemical reaction
  3. When atoms of two or more different non-metals combined, a _____ compound is formed
  4. A type of chemical reaction where two elements combine to form a compound
  5. A negatively charged ion
  6. A chemical reaction between an acid and a base that produces water and salt
  7. A positively charged ion
  8. Non-metals that are not reactive
  9. The horizontal rows of a periodic table are called _______
  10. A pure substance made from two or more elements that are combined together chemically
  11. A substance that cannot be broken down into simpler substances by chemical means

20 Clues: A negatively charged ion • A positively charged ion • Non-metals that are not reactive • Anything that has mass and volume • Metal elements that have high atomic mass • The number of protons in an atom of an element • A bond formed when valence electrons are shared • A combination of pure substances is called a _______ • ...

Chemistry Vocabulary 2025-04-25

Chemistry Vocabulary crossword puzzle
Across
  1. A simple part in matter
  2. Together,in group
  3. Atoms that are together
  4. Makes up matter
  5. Form of energy that moves around
  6. Measurement of hot and cold
  7. Lot of energy breaking bonds
  8. Stuff, takes up space
  9. Measurement of what's inside something
  10. Result of reaction
  11. Particle in matter
Down
  1. Matter changing
  2. Creates new materials
  3. Characteristics of a substance
  4. Something that can be measured
  5. A link with particles
  6. Blend of substances
  7. The amount in stuff
  8. Reaction to chemical
  9. Heat being released
  10. Combined elements
  11. Response from chemicals

22 Clues: Matter changing • Makes up matter • Together,in group • Combined elements • Result of reaction • Particle in matter • Blend of substances • The amount in stuff • Heat being released • Reaction to chemical • Creates new materials • A link with particles • Stuff, takes up space • A simple part in matter • Atoms that are together • Response from chemicals • Measurement of hot and cold • ...

William Smithmyer - Chapter 13 2016-10-12

William Smithmyer - Chapter 13 crossword puzzle
Across
  1. A rapid exothermic oxidation-reduction reaction between a material and molecular oxygen.
  2. A measure of the acidity of a solution; equal to the negative logarithm of the hydronium ion concentration.
  3. Description of a solution in which the hydroxide ion concentration is higher than the hydronium ion concentration; also sometimes called alkaline.
  4. A measure of how quickly the concentration of products in a chemical reaction increases or the concentration of reactants decreases.
  5. The reacting substances in a chemical reaction.
  6. Description of a chemical reaction in which there is a net absorption of energy.
  7. A substance that donates a hydrogen.
  8. A polyatomic ion made by removing a proton from a water molecule.
Down
  1. The minimum energy required in order for a chemical reaction to proceed.
  2. Any substance that increases the rate of a chemical reaction without itself being consumed by the reaction.
  3. Description of a solution in which the hydronium ion concentration is higher than the hydroxide ion concentration.
  4. A polyatomic ion made by adding a proton to a water molecule.
  5. Description of a chemical reaction in which there is a net release of energy.
  6. The new materials formed in a chemical reaction.
  7. Description of a solution in which the hydronium ion concentration is equal to the hydroxide ion concentration.

15 Clues: A substance that donates a hydrogen. • The reacting substances in a chemical reaction. • The new materials formed in a chemical reaction. • A polyatomic ion made by adding a proton to a water molecule. • A polyatomic ion made by removing a proton from a water molecule. • The minimum energy required in order for a chemical reaction to proceed. • ...

Chemical Equation and Reaction - By Shehran 10-L 2024-05-13

Chemical Equation and Reaction - By Shehran 10-L crossword puzzle
Across
  1. A chemical reaction in which two compounds exchange positive ions and form two new compounds
  2. Reactions in which oxidation and reduction take place together
  3. The spoiling of food caused by the oxidation of fats and oils present in it
  4. Deterioration of metals by the reaction of water and oxygen with the formation of an oxide layer on the metal surface
  5. A reaction that releases energy in the form of light or heat
  6. When two or more reactants combine with each other to form a new product
  7. A process in which a chemical substance changes because of the addition of oxygen
Down
  1. A reaction in which heat is absorbed from the surroundings
  2. A reaction in which a compound breaks down into two or more simpler substances
  3. A reaction in which a more reactive element displaces a less reactive element from its compound
  4. A substance(chemical) which slows down oxidation
  5. A substance that undergoes change in a chemical reaction
  6. Equations with simply the chemical formulas of the products and reactants, no mention of state, and no atom balancing on either side of the equation
  7. The insoluble solid which settles down after the completion of the chemical reaction
  8. Substance that speeds up a chemical reaction

15 Clues: Substance that speeds up a chemical reaction • A substance(chemical) which slows down oxidation • A substance that undergoes change in a chemical reaction • A reaction in which heat is absorbed from the surroundings • A reaction that releases energy in the form of light or heat • Reactions in which oxidation and reduction take place together • ...

Unit B - Matter and Chemical Change. 2017-11-10

Unit B - Matter and Chemical Change. crossword puzzle
Across
  1. a vertical column of elements in the periodic table
  2. change of state form a gas to a liquid
  3. the smallest part of an element that is representative of that element a neutral particle made up of a nucleus containing protons and neutrons
  4. description of how a substance interacts with other substance such as acids chemical properties are observable only when a chemical change occurs to form new substances
  5. change that result when two or more substance react to create a different substance or substance the new substances have completely different properties from the original ones.
  6. reaction chemical reactions that gives off energy
  7. group two elements in the periodic table , not including hydrogen, the most reactive of the metals
  8. a material that electric charge can move through easily
Down
  1. slow chemical reaction that occurs when oxygen hits metal
  2. Group 1 elements in the periodic table not including hydrogen the most reactive non metals
  3. chemical reaction that occurs when oxygen reacts with a substance to form a new substance and gives off energy
  4. catalyst involved in all living things
  5. mass of atom of an element calculated from the total number of protons neutrons and electrons.
  6. chemical combination of two or more elements in specific ration
  7. change of state from gas to a solid.
  8. number of protons in the nucleus of one atom of an element
  9. substance that helps a chemical reaction to proceed quickly
  10. a reaction that takes place between two elements
  11. reaction chemical reaction that absorbs energy
  12. combination of symbols that represent a compound” the formula identifies the elements into the compound the formula identifies the element s in the compound and the amount of each element
  13. of mass principle that matter is not created or destroyed. It can not be destroyed or created, the mass is always equal.
  14. ability of a substance to conduct electricity or heat
  15. amount of mass in a given volume of a substance

23 Clues: change of state from gas to a solid. • change of state form a gas to a liquid • catalyst involved in all living things • reaction chemical reaction that absorbs energy • amount of mass in a given volume of a substance • a reaction that takes place between two elements • reaction chemical reactions that gives off energy • ...

Science Crossword 2013-11-14

Science Crossword crossword puzzle
Across
  1. cause corrosion
  2. a container consisting of one or more cells
  3. a scientific procedure undertaken to make a discovery
  4. a substance with particular chemical properties
  5. the process of burning something
  6. a chemical reaction in which an acid and a base interact with the formation of a salt
  7. releasing heat
  8. the branch of science concerned with the substances
Down
  1. a chemical reaction that occurs between an acid and a base
  2. substances studied in chemistry
  3. indicates the state or level of something
  4. able to be dissolved
  5. absorbing heat
  6. incapable of being dissolved
  7. reacts with acids to form salts
  8. the smallest particle of a chemical element
  9. a substance that undergoes change during a reaction
  10. a particular kind of matter
  11. table a table of the chemical elements
  12. scale a scale from 0 to 14 of the acidity or alkalinity

20 Clues: absorbing heat • releasing heat • cause corrosion • able to be dissolved • a particular kind of matter • incapable of being dissolved • substances studied in chemistry • reacts with acids to form salts • the process of burning something • table a table of the chemical elements • indicates the state or level of something • a container consisting of one or more cells • ...

Chemistry vocabulary 2022-10-12

Chemistry vocabulary crossword puzzle
Across
  1. The number written slightly below and to the right of a chemical symbol that shows how many atoms of an element are in a compound.
  2. A substance made up of two or more different types of atoms bonded together.
  3. An atom of one element that has a different number of neutrons than another atom of the same element.
  4. A negatively charged particle located outside of an atom’s nucleus about 2000 times smaller than either a proton or neutron.
  5. number The total number of protons in an atom’s nucleus.
  6. A combination of two or more substances that do not combine chemically, but remain the same individual substances.
  7. The number before a chemical formula indicating how many molecules are involved in a chemical reaction.
  8. change A usually reversible change in the physical properties of a substance, as size and shape.
  9. of conservation of mass A scientific law stating that during a chemical reaction, matter is not created nor destroyed.
  10. A substance that is present at the beginning of a chemical reaction, takes part in the reaction, and is changed into a new substance.
  11. A substance that is not uniform throughout.
  12. A group of atoms that are held together by covalent bonds so that they move together.
  13. A neutral particle located in an atom’s nucleus.
Down
  1. A positively charged particle located in an atom’s nucleus.
  2. A substance formed by a chemical reaction; made by the rearrangement of atoms and bonds in reactants.
  3. mass number The total number of protons and neutrons in an atom’s nucleus.
  4. A substance that cannot be broken down into a simpler substance by ordinary chemical changes.
  5. An atom of group of atoms that has a positive or negative electric charge; forms by gaining or losing electrons.
  6. A solid substance that forms as a result of a chemical reaction between chemicals in two liquids.
  7. A substance that increases the rate of a chemical reaction but is not consumed by the reaction.
  8. A substance that is evenly spread throughout. Particles not distinguishable.
  9. a vertical column in the periodic table of the elements that have similar properties.
  10. a horizontal row in the periodic table of the elements that have varying properties.
  11. change A change of one substance into another substance.

24 Clues: A substance that is not uniform throughout. • A neutral particle located in an atom’s nucleus. • change A change of one substance into another substance. • number The total number of protons in an atom’s nucleus. • A positively charged particle located in an atom’s nucleus. • mass number The total number of protons and neutrons in an atom’s nucleus. • ...

CConley Chapter 13 2016-10-14

CConley Chapter 13 crossword puzzle
Across
  1. What is needed to start the process to break bonds or start a combustion reaction
  2. A substance that is the result of the chemical change
  3. The amount of energy required to pull two bonds atoms a part
  4. When a change in a chemical equilibrium is opposed until a new equilibrium is found
  5. Energy transfer from reactants to surroundings
  6. A chemical reaction occurs when a substance reacts with oxygen
  7. Energy is transferred to reactants from surrounding
Down
  1. A reaction in which a single compound breaks down to form two or more simple substance
  2. Change that takes place when two or more substance
  3. A substance that undergoes a chemical change
  4. Any substance that increases the rate of a chemical reaction
  5. A reaction in which two or more substance combine to form a new compounds
  6. A chemical that accepts a hydrogen ion
  7. When reaction and it's reverse action at the same rate
  8. A chemical that donates a hydrogen ion

15 Clues: A chemical that accepts a hydrogen ion • A chemical that donates a hydrogen ion • A substance that undergoes a chemical change • Energy transfer from reactants to surroundings • Change that takes place when two or more substance • Energy is transferred to reactants from surrounding • A substance that is the result of the chemical change • ...

TYPES OF CHEMICAL REACTION 2025-04-28

TYPES OF CHEMICAL REACTION crossword puzzle
Across
  1. Substance that undergoes oxidation in a redox reaction
  2. Decomposition reaction initiated by sunligh
  3. A solid that forms and settles out of a liquid mixture
  4. A reaction that releases energy in the form of heat
  5. A reaction in which a compound breaks down into simpler substances
  6. A solid that forms and settles out of a liquid mixture
  7. A reaction that absorbs energy in the form of heat
  8. A type of reaction where two or more substances combine to form one
Down
  1. A shorthand way to represent a chemical reaction using symbols and formulas
  2. The starting materials in a chemical reaction
  3. DECOMPOSITION reaction initiated by heat
  4. Change in color, formation of gas, and temperature change indicate this has happened
  5. A type of reaction where two compounds exchange their ions
  6. Reaction involving both oxidation and reduction
  7. The reaction where a substance gains oxygen
  8. OXIDE The chemical name for quicklime

16 Clues: OXIDE The chemical name for quicklime • DECOMPOSITION reaction initiated by heat • Decomposition reaction initiated by sunligh • The reaction where a substance gains oxygen • The starting materials in a chemical reaction • Reaction involving both oxidation and reduction • A reaction that absorbs energy in the form of heat • ...

Law Of Conservation of Mass and Balancing Equations 2025-04-29

Law Of Conservation of Mass and Balancing Equations crossword puzzle
Across
  1. The basic units of matter and the defining structure of elements.
  2. Substances formed as a result of a chemical reaction.
  3. The amount of matter in an object.
  4. The principle that mass is neither created nor destroyed during a chemical reaction.
  5. A chemical equation in which the number of atoms for each element is the same on both sides.
  6. Pure substances consisting of only one type of atom.
  7. Relating to chemistry or the interactions of substances as studied in chemistry.
  8. A small number written below and to the right of a chemical symbol in a formula, showing how many atoms of that element are present.
Down
  1. The process by which one or more substances change to produce new substances.
  2. True or False: Balancing equations proves the Law of Conservation of Mass.
  3. Anything that has mass and takes up space.
  4. Substances that start a chemical reaction.
  5. A rule that describes a consistent natural phenomenon (in science, such as the Law of Conservation of Mass).
  6. In a chemical reaction, the mass of the reactants is ___ to the mass of the products.
  7. A number placed in front of a chemical formula to show how many molecules are involved.
  8. A symbolic representation of a chemical reaction.

16 Clues: The amount of matter in an object. • Anything that has mass and takes up space. • Substances that start a chemical reaction. • A symbolic representation of a chemical reaction. • Pure substances consisting of only one type of atom. • Substances formed as a result of a chemical reaction. • The basic units of matter and the defining structure of elements. • ...

Characteristics of Chemical Reactions 2018-11-19

Characteristics of Chemical Reactions crossword puzzle
Across
  1. the number of atoms that go into a reaction is the __________ as the number of atoms that come out.
  2. the substances that come out of a reaction
  3. a solid forming out of two liquids
  4. characteristics used to describe substances
  5. We know a chemical reaction happened on an atomic level when the atoms ______________.
  6. a manmade material made from natural resources
  7. formed when two or more atoms chemically combine
  8. smallest part of a substance
Down
  1. the substances that go into a chemical reaction
  2. when oxygen atoms combine with iron atoms, this forms
  3. after a chemical reaction the properties of the substances will be ___________.
  4. an unexpected change in this is a sign of a chemical reaction
  5. during a reaction, this may increase or decrease
  6. this is produced when vinegar and baking soda combine, one sign of a reaction
  7. cracking a glow stick will produce this sign of a reaction

15 Clues: smallest part of a substance • a solid forming out of two liquids • the substances that come out of a reaction • characteristics used to describe substances • a manmade material made from natural resources • the substances that go into a chemical reaction • during a reaction, this may increase or decrease • formed when two or more atoms chemically combine • ...

Science crossword 2024-02-17

Science crossword crossword puzzle
Across
  1. - Resulting substances after a chemical reaction
  2. - Process in plants convert carbon dioxide and water into glucose and oxygen using sunlight as energy.
  3. - the process of rapid chemical reaction between a fuel and oxygen
  4. - Easily ignited substance
  5. - Alteration in the form or state of matter without changing its chemical composition; no new substances are formed.
  6. - Contains oxygen for combustion
  7. - Essential gas for combustion
  8. - Measure of the intensity of heat
  9. - Released during combustion
  10. - Visible manifestation of combustion
Down
  1. - Product of cellular respiration
  2. - Process where chemical substances transform into new substances through the breaking and forming of chemical bonds.
  3. - Gaseous phase of a substance
  4. - Transformation in which substances undergo chemical reactions, resulting in the formation of new substances with different properties.
  5. - Visible, rapid combustion
  6. - Resulting substances after a chemical reaction
  7. - Source of energy for use and storage at a cellular level
  8. - Initial substances in a chemical reaction
  9. - Substance consisting of only one type of atom.
  10. - Initiates combustion

20 Clues: - Initiates combustion • - Easily ignited substance • - Visible, rapid combustion • - Released during combustion • - Gaseous phase of a substance • - Essential gas for combustion • - Contains oxygen for combustion • - Product of cellular respiration • - Measure of the intensity of heat • - Visible manifestation of combustion • - Initial substances in a chemical reaction • ...

Reaction Terms 2015-02-25

Reaction Terms crossword puzzle
Across
  1. of Conservation of Mass states that for any system closed to all transfers of matter and energy (both of which have mass), the mass of the system must remain constant over time, as system mass cannot change quantity if it is not added or removed.
  2. A material that increases the rate of a chemical reaction by lowering the activation energy
  3. A biological catalyst that lowers the activation energy of reactions in cells
  4. science) A substance formed as a result of a chemical reaction
  5. A number placed in front of a chemical formula in an equation that indicates how many atoms or molecules of each reactant and product are involved in a reaction
  6. The amount of one material dissolved in a given amount of another material
  7. A number in a chemical formula that tells the number of atoms in a molecule or the ratio of elements in a compound
Down
  1. A reaction that absorbs energy in the form of heat
  2. A substance that enters into a chemical reaction
  3. equation A short, easy way to show a chemical reaction, using symbols instead of words
  4. A solid that forms from a solution during a chemical reaction
  5. A reaction that releases energy in the form of heat
  6. energy The minimum amount of energy needed to start a chemical reaction
  7. A material that decreases the rate of a reaction

14 Clues: A substance that enters into a chemical reaction • A material that decreases the rate of a reaction • A reaction that absorbs energy in the form of heat • A reaction that releases energy in the form of heat • A solid that forms from a solution during a chemical reaction • science) A substance formed as a result of a chemical reaction • ...

Chemistry puzzle 2022-10-13

Chemistry puzzle crossword puzzle
Across
  1. change: A change of one substance into another substance.
  2. The number written slightly below and to the right of a chemical symbol that shows how many atoms of an element are in a compound.
  3. A negatively charged particle located outside of an atom’s nucleus about 2000 times smaller than either a proton or neutron.
  4. A substance that is not uniform throughout.
  5. A solid substance that forms as a result of a chemical reaction between chemicals in two liquids.
  6. A neutral particle located in an atom’s nucleus.
  7. of conservation of mass: A scientific law stating that during a chemical reaction, matter is not created nor destroyed.
  8. change: A usually reversible change in the physical properties of a substance, as size and shape.
  9. A substance that is present at the beginning of a chemical reaction, takes part in the reaction, and is changed into a new substance.
  10. A combination of two or more substances that do not combine chemically, but remain the same individual substances.
Down
  1. mass number: The total number of protons and neutrons in an atom’s nucleus.
  2. A group of atoms that are held together by covalent bonds so that they move together.
  3. An atom of one element that has a different number of neutrons than another atom of the same element.
  4. A substance that is evenly spread throughout. Particles not distinguishable.
  5. a vertical column in the periodic table of the elements that have similar properties.
  6. a horizontal row in the periodic table of the elements that have varying properties.
  7. A substance made up of two or more different types of atoms bonded together.
  8. The number before a chemical formula indicating how many molecules are involved in a chemical reaction.
  9. A substance formed by a chemical reaction; made by the rearrangement of atoms and bonds in reactants.
  10. An atom of group of atoms that has a positive or negative electric charge; forms by gaining or losing electrons.
  11. number: The total number of protons in an atom’s nucleus.
  12. A positively charged particle located in an atom’s nucleus.
  13. A substance that increases the rate of a chemical reaction but is not consumed by the reaction.
  14. A substance that cannot be broken down into a simpler substance by ordinary chemical changes.

24 Clues: A substance that is not uniform throughout. • A neutral particle located in an atom’s nucleus. • change: A change of one substance into another substance. • number: The total number of protons in an atom’s nucleus. • A positively charged particle located in an atom’s nucleus. • mass number: The total number of protons and neutrons in an atom’s nucleus. • ...

unit 2 Crossword Lab -Chris 2017-11-12

unit 2 Crossword Lab -Chris crossword puzzle
Across
  1. substance: that helps a chemical reaction to proceed more quickly
  2. amount of mass in a given volume of a substance
  3. ability of a substance to conduct electricity or heat
  4. reaction: chemical reaction that absorbs heat
  5. reaction: chemical reaction that releases heat
  6. mass:mass of one atom of an element calculated from the total number of protons,neutrons, and electrons of that atom; measured in atomic mass units (amu)
  7. solution: a solution in which water is the solvent
  8. group 1 elements in the periodic table, not including hydrogen; the most reactive of the metals
  9. change of state from a liquid to a gas
  10. catalyst involved in the chemical reaction of living things
  11. slow chemical change that occurs when oxygen in the air reacts with a metal
  12. process in which molecules move from an area of higher concentration to one of lower concentration
  13. shells: orbit of electrons around the nucleus of an atom
  14. cloudy mixture in which tiny particles of one substance are held within another and particles cannot be separated out from the other substance
Down
  1. pure substance that cannot be broken down into other substances
  2. group 17 elements in the periodic table; most reactive non metals
  3. the smallest part of an element that is representative of that element; a neutral particle made up of a nucleus containing protons and neutrons, and in which the number of electrons equals the number of protons
  4. of mass principle that matter is not created or destroyed in a chemical reaction; the mass of the products always equals the mass of the reactants
  5. chemical reaction that occurs when oxygen reacts with a substance to form a new substance and give off energy
  6. invisible negatively charged particle that orbits the nucleus of an atom
  7. a material that electric charge can move through easily
  8. chemical combination of two or more elements in a specific ratio
  9. change: change that results when two or more substances react to create a different substance or substances; the new substances have completely different properties from the original ones
  10. vertical column of elements in the periodic table; elements in a family all have similar chemical properties; also called a family

24 Clues: change of state from a liquid to a gas • reaction: chemical reaction that absorbs heat • reaction: chemical reaction that releases heat • amount of mass in a given volume of a substance • solution: a solution in which water is the solvent • ability of a substance to conduct electricity or heat • a material that electric charge can move through easily • ...

7th Grade Science Crossword 2013-12-16

7th Grade Science Crossword crossword puzzle
Across
  1. smallest unit of a element
  2. first person to discover atoms
  3. the vertical column
  4. the horizontal row are called periods are labeled
  5. negative charge in the nucleus
  6. when more then one atom chemically combined
  7. two or more types of elements chemically combined
  8. alters the form of a substance
  9. a characteristics that enables a substance to undergo a chemical change
  10. the substance you start out with
  11. neutral in the nucleus
Down
  1. the substance you end with
  2. states that in a chemical reaction,matter is neither created nor destroyed
  3. the number of protons & neutrons found in the nucleus
  4. chemical reaction also involves energy
  5. the changes when an element is put together or pulled apart
  6. a substance that is made up of only one kind of a atom
  7. not cuttable
  8. positive charge in the nucleus
  9. center of an atom

20 Clues: not cuttable • center of an atom • the vertical column • neutral in the nucleus • the substance you end with • smallest unit of a element • first person to discover atoms • negative charge in the nucleus • alters the form of a substance • positive charge in the nucleus • the substance you start out with • chemical reaction also involves energy • ...

Properties of Matter 2022-09-23

Properties of Matter crossword puzzle
Across
  1. chemical combinations of elements
  2. formed from a chemical change of iron
  3. a physical property
  4. has mass and volume
  5. definite volume definite shape
  6. solid formed when two solutions mix
  7. a chemical change when a fuel reacts with oxygen
  8. smallest unit of a compound
  9. amount of matter in a substance
  10. substances formed in a chemical reaction
  11. physical property ratio of mass to volume
  12. a property that describes how a substance reacts with another
  13. mixture with visible parts
Down
  1. elements that exist as a pair
  2. a force due to gravity
  3. mixture that is uniformly mixed
  4. definite volume variable shape
  5. a property that can be determined without a reaction
  6. physical combination of pure substances
  7. cannot be broken down into simpler substance
  8. variable shape and volume
  9. elements and compounds one set of properties
  10. substances that go into a chemical reaction
  11. smallest unit of an element

24 Clues: a physical property • has mass and volume • a force due to gravity • variable shape and volume • mixture with visible parts • smallest unit of a compound • smallest unit of an element • elements that exist as a pair • definite volume variable shape • definite volume definite shape • mixture that is uniformly mixed • amount of matter in a substance • chemical combinations of elements • ...

Chemistry Crossword 2024-04-16

Chemistry Crossword crossword puzzle
Across
  1. A number that indicates the charge of an ion
  2. A shape of molecule where there are 4 electron domains around the central atom
  3. A shape of molecule where there are 2 electron domains around the central atom
  4. A number that indicates how many moles of a substance are present in a balanced chemical reaction
  5. A solution in which a solid is dissolved in water
  6. The bottom point of a wave
  7. A solid that forms from a reaction between two aqueous solutions
  8. The top point of a wave
  9. The height of the wave
  10. A region on the central atom of a molecule where electrons are most likely to be found (bonding and nonbonding electrons)
  11. The unit of particles for an element
  12. A type of chemical reaction in which a single substance breaks down into multiple substances
  13. Electrons follow these pathways around the nucleus of the atom
  14. A type of chemical reaction that involves a single element and an ionic compound where the single element switches places with the like element in the compound
  15. The amount of moles in volume of solution
  16. A type of reaction where a hydrocarbon reacts with oxygen gas to produce carbon dioxide and water vapor
  17. Substances that are destroyed by a chemical change in a reaction
  18. A type of chemical reaction in which multiple substances form a single product
Down
  1. A number that indicates how many atoms are present in a molecule
  2. A chemical substance that releases OH- ions in aqueous solutions
  3. The acronym that stands for Valence Shell Electron Pair Repulsion Theory
  4. The distance between two consecutive points on a wave
  5. The name of the scientist that discovered the number of particles present in one mole of substance
  6. The rate of occurrence of a wave
  7. A chemical reaction in which an acid and base react with one another to produce water and a salt solution
  8. A type of reaction that involves two ionic compounds where the cations switch places
  9. The arrangement of electrons in orbitals around the nucleus
  10. The unit of particles for a covalent compound
  11. Reducing the number of moles of solute per unit volume of solution
  12. Substances that are formed by a chemical change in a reaction
  13. A chemical substance that releases H+ ions in aqueous solutions
  14. The breakdown of ions in an aqueous solution

32 Clues: The height of the wave • The top point of a wave • The bottom point of a wave • The rate of occurrence of a wave • The unit of particles for an element • The amount of moles in volume of solution • A number that indicates the charge of an ion • The breakdown of ions in an aqueous solution • The unit of particles for a covalent compound • ...

Mole 2023-03-28

Mole crossword puzzle
Across
  1. The reactant that is present in greater amount than is necessary for a reaction to occur.
  2. A number written below and to the right of a chemical symbol in a chemical formula, indicating the number of atoms of that element in a molecule.
  3. The reactant that is completely consumed in a reaction and determines the amount of product that can be formed.
  4. Italian scientist who is credited with introducing the concept of the mole.
  5. The process of changing from one unit of measurement to another.
  6. A number in front of a chemical formula that indicates the number of molecules or atoms involved in a reaction.
  7. The study of matter and the changes it undergoes.
  8. A molecule made up of hydrogen and water with a molar mass of 18.02 g/mol.
  9. A set of symbols and numbers used to represent a molecule or compound.
  10. The amount of product obtained in a reaction.
Down
  1. A type of reaction that breaks a compound down into smaller components.
  2. A way of expressing a quantity as a fraction of 100.
  3. Has a molar mass of 16.00 g/mol.
  4. The substances that are produced in a chemical reaction.
  5. The unit of mass commonly used in chemistry.
  6. 6.02x10^23
  7. The substances that participate in a chemical reaction.
  8. The branch of chemistry that deals with the calculation of quantities of substances involved in chemical reactions.

18 Clues: 6.02x10^23 • Has a molar mass of 16.00 g/mol. • The unit of mass commonly used in chemistry. • The amount of product obtained in a reaction. • The study of matter and the changes it undergoes. • A way of expressing a quantity as a fraction of 100. • The substances that participate in a chemical reaction. • The substances that are produced in a chemical reaction. • ...

Physical Science Crossword Puzzle 2025-03-30

Physical Science Crossword Puzzle crossword puzzle
Across
  1. Characteristics that you can observe or measure without changing the identity of the matter.
  2. Chemical reaction where more energy is needed to start the reaction.
  3. Mass per unit volume of a substance.
  4. Stored energy due to the interactions between particles.
  5. A group of atoms that are held together by chemical bonds and act as a unit.
  6. Chemical reaction where more energy is released during the reaction.
  7. The amount of thermal energy transferred from regions of higher temperature to regions of lower temperatures.
  8. Property which occurs when a substance reacts with another substance, changing it into a new substance.
  9. Characteristic of matter that can be observed as it changes to a different type of matter.
Down
  1. A group of chemical symbols and numbers that represent the element and the number of atoms of each element that makes up a compound.
  2. The substance produced by the chemical reaction.
  3. Energy in motion.
  4. The measure of the average kinetic energy of the particles in a material.
  5. The starting substance in a chemical reaction.
  6. A substance made of only one type of atom.
  7. The ability of a type of matter to burn easily.
  8. The amount of space a substance takes up.
  9. Matter with a composition that is always the same.
  10. The amount of matter in a substance.
  11. A small particle that is the building block of matter.
  12. Matter changes into other substances with different chemical and physical properties.
  13. Type of substance that occurs when atoms of two or more different elements are bonded together.

22 Clues: Energy in motion. • Mass per unit volume of a substance. • The amount of matter in a substance. • The amount of space a substance takes up. • A substance made of only one type of atom. • The starting substance in a chemical reaction. • The ability of a type of matter to burn easily. • The substance produced by the chemical reaction. • ...

Reaction Types 2016-10-23

Reaction Types crossword puzzle
Across
  1. Chemicals used in order to created a chemical reaction.
  2. A dark coating of silver sulfide that appears on silver when it reacts with sulfur in the atmosphere.
  3. Resulting chemicals of a chemical reaction.
  4. Combustion that does not produce any heat or light due to lack of oxygen.
  5. A sugar created using photosynthesis.
  6. Rain in which acids have been dissolved in.
  7. Chemical reaction that releases energy.
Down
  1. Chemical reaction that absorbs energy.
  2. The term used for when metals begin to break down due to their reaction with other chemicals.
  3. A rapid reaction using oxygen to release energy in the form of heat and/or light.
  4. Chemical reaction in which green plants use in order to survive.
  5. Short term for sodium chloride.
  6. A written description of what is happening in a reaction.
  7. Result of hydrated iron.

14 Clues: Result of hydrated iron. • Short term for sodium chloride. • A sugar created using photosynthesis. • Chemical reaction that absorbs energy. • Chemical reaction that releases energy. • Resulting chemicals of a chemical reaction. • Rain in which acids have been dissolved in. • Chemicals used in order to created a chemical reaction. • ...

Chemistry Crossword 2022-03-21

Chemistry Crossword crossword puzzle
Across
  1. Biological catalysts contained in the cells of your body
  2. A characteristic of a substance that describes its ability to change into other substances
  3. The principle that states that matter is not created or destroyed during a chemical reaction
  4. The new substances you have after the reaction is complete
  5. The minimum amount of energy needed to start a chemical reaction
  6. A solid that forms from a specific solution
  7. Matter is not allowed to enter or leave
  8. A rapid reaction between oxygen and a substance called fuel, the result of which is fire
  9. A reaction is which energy is absorbed
  10. Anything that has mass and takes up space
  11. Burning a marshmallow
  12. Squishing a marshmallow
  13. A material that releases energy when it burns
  14. A characteristic of a substance that can be observed without changing the substance into another substance
  15. A material used to decrease the rate of a reaction
Down
  1. The process that breaks down compounds into simpler products
  2. A short, easy way to show a chemical reaction, using symbols instead of words
  3. The amount of a substance in a given volume
  4. The substances you have at the beginning of a chemical equation
  5. The number placed in front of a chemical formula in an equation
  6. A reaction that releases energy in the form of heat
  7. The process where two or more elements or compounds combine to make a more complex substance
  8. A material that increases the rate of a reaction by lowering the activation energy
  9. The study of matter and how matter changes
  10. Matter can enter from or escape to the surroundings
  11. The process where one element replaces another in a compound, or when two elements in different compounds trade places

26 Clues: Burning a marshmallow • Squishing a marshmallow • A reaction is which energy is absorbed • Matter is not allowed to enter or leave • Anything that has mass and takes up space • The study of matter and how matter changes • The amount of a substance in a given volume • A solid that forms from a specific solution • A material that releases energy when it burns • ...

7th Grade Science Crossword 2013-12-16

7th Grade Science Crossword crossword puzzle
Across
  1. first person to discover atoms
  2. the changes when an element is put together or pulled apart
  3. a substance that is made up of only one kind of a atom
  4. states that in a chemical reaction,matter is neither created nor destroyed
  5. the vertical column
  6. the substance you end with
  7. alters the form of a substance
  8. not cuttable
  9. the horizontal row are called periods are labeled
  10. negative charge in the nucleus
  11. neutral in the nucleus
  12. center of an atom
Down
  1. a characteristics that enables a substance to undergo a chemical change
  2. the substance you start out with
  3. smallest unit of a element
  4. two or more types of elements chemically combined
  5. positive charge in the nucleus
  6. the number of protons & neutrons found in the nucleus
  7. chemical reaction also involves energy
  8. when more then one atom chemically combined

20 Clues: not cuttable • center of an atom • the vertical column • neutral in the nucleus • smallest unit of a element • the substance you end with • first person to discover atoms • alters the form of a substance • positive charge in the nucleus • negative charge in the nucleus • the substance you start out with • chemical reaction also involves energy • ...

Mike Barros Crossword 2017-02-27

Mike Barros Crossword crossword puzzle
Across
  1. the symbolic representation of a chemical reaction in the form of symbols and formulae
  2. type of chemical reaction where an element reacts with a compound and takes the place of another element in that compound
  3. chemical decomposition produced by passing an electric current through a liquid or solution containing ions.
  4. chemical compound that contains exactly two different elements. [1] Examples of binary ionic compounds include calcium chloride (CaCl2), sodium fluoride (NaF), and magnesium oxide (MgO), whilst examples of binary covalent compounds include water (H2O), and sulfur hexafluoride (SF6)
  5. the action or fact of making a specified thing smaller or less in amount, degree, or size.
  6. the state or process of rotting; decay.
  7. a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.
  8. combination or composition, in particular.
  9. of or containing water, typically as a solvent or medium.
Down
  1. cause (an event or situation, typically one that is bad or undesirable) to happen suddenly, unexpectedly, or prematurely.
  2. the process or result of oxidizing or being oxidized.
  3. article or substance that is manufactured
  4. type of chemical reaction where two compounds react, and the positive ions (cation) and the negative ions (anion) of the two reactants switch places, forming two new compounds or products
  5. amount of product obtained in a chemical reaction
  6. charged chemical species (ion) composed of two or more atoms covalently bonded or of a metal complex that can be considered to be acting as a single unit
  7. consisting of two atoms
  8. a substance that takes part in and undergoes change during a reaction
  9. a numerical or constant quantity placed before and multiplying the variable in an algebraic expression
  10. the process of burning something.

19 Clues: consisting of two atoms • the process of burning something. • the state or process of rotting; decay. • article or substance that is manufactured • combination or composition, in particular. • amount of product obtained in a chemical reaction • the process or result of oxidizing or being oxidized. • of or containing water, typically as a solvent or medium. • ...

Chemistry Unit Test Review 2014-03-09

Chemistry Unit Test Review crossword puzzle
Across
  1. Limestone is a base and will __________ with an acid.
  2. Energy is transferred from the surroundings to the reactants in a ________ reaction
  3. When put into water, acids release _________ ions.
  4. When bases are put in water, they release _____________ ions.
  5. In a chemical reaction the atoms will be
  6. The reactants are different from the products in a ________change
  7. A phase change is a type of
  8. A solution that has a pH above 7 is a ______
  9. In a combustion reaction, the products always have _______.
Down
  1. Energy was absorbed to ________ bonds
  2. Energy goes from the reactants to the surroundings in a ______ reaction
  3. This type of chemical reaction has the equation: A + B --> AB
  4. Energy is released to _________ bonds
  5. In an exothermic reaction, energy is _________ from the reactants into the surroundings.
  6. Chemical energy is energy that is present in _____________
  7. When acids and bases neutralize they produce a _________
  8. This type of paper indicator gives the specific pH
  9. When hydronium, H3O+ and hydroxide, OH- react what is produced is ______________

18 Clues: A phase change is a type of • Energy was absorbed to ________ bonds • Energy is released to _________ bonds • In a chemical reaction the atoms will be • A solution that has a pH above 7 is a ______ • When put into water, acids release _________ ions. • This type of paper indicator gives the specific pH • Limestone is a base and will __________ with an acid. • ...

Chemistry Unit Test Review 2014-03-09

Chemistry Unit Test Review crossword puzzle
Across
  1. When put into water, acids release _________ ions.
  2. This type of paper indicator gives the specific pH
  3. Energy is transferred from the surroundings to the reactants in a ________ reaction
  4. When hydronium, H3O+ and hydroxide, OH- react what is produced is ______________
  5. A solution that has a pH above 7 is a ______
  6. In a combustion reaction, the products always have _______.
  7. Energy was absorbed to ________ bonds
  8. Energy is released to _________ bonds
  9. In a chemical reaction the atoms will be
  10. This type of chemical reaction has the equation: A + B --> AB
  11. The reactants are different from the products in a ________change
  12. When acids and bases neutralize they produce a _________
Down
  1. When bases are put in water, they release _____________ ions.
  2. Energy goes from the reactants to the surroundings in a ______ reaction
  3. In an exothermic reaction, energy is _________ from the reactants into the surroundings.
  4. Chemical energy is energy that is present in _____________
  5. Limestone is a base and will __________ with an acid.
  6. A phase change is a type of

18 Clues: A phase change is a type of • Energy was absorbed to ________ bonds • Energy is released to _________ bonds • In a chemical reaction the atoms will be • A solution that has a pH above 7 is a ______ • When put into water, acids release _________ ions. • This type of paper indicator gives the specific pH • Limestone is a base and will __________ with an acid. • ...

Quantities in Chemical Reaction 2022-06-09

Quantities in Chemical Reaction crossword puzzle
Across
  1. Ratio the used to find the unknown moles.
  2. BaCl2 x H20 is called an ______.
  3. Identify the limiting reactant when 4.68 g of Fe reacts with 2.88 g of S to produce FeS.
  4. The given yield you calculated.
  5. A reactant the is limit to how much product made.
  6. Atomic mass unit
  7. Moles x Molar mass
  8. Mass of crucible/lid is 10.500g, mass of MgI2 x H20 and crucible\lid is 12.128g, mass of MgI2 (anhydrous) and crucible/lid is 11.572g.
  9. The molecular weight of a substance expressed in grams.
  10. A ceramic or metal container that holds substances to be melted.
Down
  1. The yield given found during a live experiment.
  2. contains no water
  3. The formula represented in simplest whole number ratio of atoms in compound.
  4. Having the relationship between the quantities of reactants to products.
  5. The "Law of ______ Proportion."
  6. First step in stoichiometry is a _________ equation.
  7. The number of a famous man.
  8. The substance that is not used up fully in a reaction.
  9. hydroxide Identify the limiting reactant when 7.81 g HCl reacts wtih 5.24 g NaOH to produce NaCl and H2O.
  10. The formula that is the true or actual ratio of atoms in compound.

20 Clues: Atomic mass unit • contains no water • Moles x Molar mass • The number of a famous man. • The "Law of ______ Proportion." • The given yield you calculated. • BaCl2 x H20 is called an ______. • Ratio the used to find the unknown moles. • The yield given found during a live experiment. • A reactant the is limit to how much product made. • ...

Combustion and Chemical Reaction 2024-02-16

Combustion and Chemical Reaction crossword puzzle
Across
  1. an action performed or a feeling experienced in response to a situation or event
  2. relating to chemistry, or the interactions of substances as studied in chemistry
  3. the quality of being hot; high temperature
  4. the process of burning something
  5. the heating of an organic material, such as biomass, in the absence of oxygen
  6. a thorough or dramatic change in form or appearance
  7. the destruction of something, especially waste material, by burning
  8. burning very fiercely
  9. a technological process that can convert any carbonaceous (carbon-based) raw material such as coal into fuel gas
  10. the action of setting something on fire or starting to burn
Down
  1. a colorless, odorless, highly flammable gas, the chemical element of atomic number 1
  2. easily combustible small sticks or twigs used for starting a fire
  3. a machine with moving parts that converts power into motion
  4. the strength and vitality required for sustained physical or mental activity
  5. consume by fire
  6. the chemical element of atomic number 6, a nonmetal which has two main forms (diamond and graphite) and which also occurs in impure form in charcoal, soot, and coal
  7. A chemical reaction that takes place when a substance comes into contact with oxygen or another oxidizing substance
  8. a substance or matter in a state in which it will expand freely to fill the whole of a container, having no fixed shape (unlike a solid) and no fixed volume (unlike a liquid)
  9. material such as coal, gas, or oil that is burned to produce heat or power
  10. reciprocal action or influence

20 Clues: consume by fire • burning very fiercely • reciprocal action or influence • the process of burning something • the quality of being hot; high temperature • a thorough or dramatic change in form or appearance • a machine with moving parts that converts power into motion • the action of setting something on fire or starting to burn • ...

CH. 11 vocab 2022-05-03

CH. 11 vocab crossword puzzle
Across
  1. a chemical change in which one element replaces a second element in a compound
  2. substance that speeds up the rate of a chemical reaction
  3. a way of using the formulas to indicate the chemicals that were involved in the chemical reaction
  4. an ionic equation that includes only the particles that participate in the reaction
  5. a chemical change that involves an exchange of positive ions between two compounds
  6. a chemical change in which two or more substances react to form a single new substance
  7. a chemical equation in which mass is conserved; each side of the equation has the same number of atoms of each element
  8. A number in front of a chemical formula in an equation that indicates how many molecules or atoms of each reactant and product are involved in a reaction.
Down
  1. an equation that shows dissolved ionic compounds as dissociated free ions
  2. a reaction in which a single compound breaks down to form two or more simpler substances
  3. a way to describe a chemical reaction using chemical formulas and other symbols
  4. ions that do not participate in a reaction
  5. a chemical reaction that occurs when a substance reacts with oxygen, releasing energy in the form of heat and light
  6. a list of elements in order of decreasing reactivity

14 Clues: ions that do not participate in a reaction • a list of elements in order of decreasing reactivity • substance that speeds up the rate of a chemical reaction • an equation that shows dissolved ionic compounds as dissociated free ions • a chemical change in which one element replaces a second element in a compound • ...

Biology Chapter 4 Vocabulary 2025-10-07

Biology Chapter 4 Vocabulary crossword puzzle
Across
  1. electron transport _____ (ETC) A series of proteins in the inner mitochondrial membrane that transfer electrons and help make ATP.
  2. A molecule that carries high-energy electrons from earlier stages of cellular respiration to the electron transport chain.
  3. ________ energy – The energy input required to get a chemical reaction started.
  4. _____ cycle, A series of chemical reactions in the mitochondria that break down pyruvate to produce carbon dioxide, NADH, and ATP.
  5. A chemical reaction that absorbs energy
  6. A chemical reaction that releases energy.
  7. A process that makes ATP without oxygen by breaking down glucose after glycolysis.
  8. The main energy-carrying molecule of the cell; it stores and releases energy for cellular processes.
  9. The green pigment in plants that captures light energy for photosynthesis.
  10. ______ cycle – The set of chemical reactions in the stroma that use carbon dioxide and energy (from ATP and NADPH) to make glucose.
  11. The set of chemical reactions that build larger molecules from smaller ones and require energy.
  12. A substance that speeds up a chemical reaction without being used up in the process; enzymes are biological catalysts.
  13. A flattened membrane sac inside chloroplasts where the light-dependent reactions of photosynthesis occur.
  14. cellular _______, The process by which cells break down glucose to store its chemical potential energy in ATP.
Down
  1. The process by which plants, algae, and some bacteria use sunlight to make glucose from carbon dioxide and water.
  2. A three-carbon molecule formed at the end of glycolysis; it is used in the next stages of cellular respiration.
  3. The molecule that an enzyme acts on in a chemical reaction.
  4. ATP ______ – An enzyme in the inner mitochondrial membrane that uses the flow of hydrogen ions to make ATP.
  5. The enzyme that captures carbon dioxide in the first step of the Calvin cycle.
  6. The fluid-filled space around the thylakoids inside a chloroplast; where the Calvin cycle happens.
  7. Chemical ______ energy – The stored energy in the bonds of molecules that can be released during a chemical reaction.
  8. The set of chemical reactions that break down large molecules into smaller ones and release energy.
  9. oxidative ______ – The final stage of cellular respiration where most ATP is made, using energy from electrons carried by NADH transferred along the electron transport chain.
  10. The molecule or molecules made at the end of a chemical reaction.
  11. The first step of cellular respiration in which six-carbon glucose is broken down into two three-carbon pyruvates, producing ATP and NADH.
  12. A protein that catalyzes a chemical reaction.
  13. The inner space of the mitochondrion where the Krebs cycle takes place.
  14. Requiring oxygen to occur; for example, aerobic respiration needs oxygen.
  15. A particle or packet of light energy that powers the light-dependent reactions of photosynthesis.

29 Clues: A chemical reaction that absorbs energy • A chemical reaction that releases energy. • A protein that catalyzes a chemical reaction. • The molecule that an enzyme acts on in a chemical reaction. • The molecule or molecules made at the end of a chemical reaction. • The inner space of the mitochondrion where the Krebs cycle takes place. • ...

Rates of Reaction 2023-11-30

Rates of Reaction crossword puzzle
Across
  1. The substances formed as a result of a chemical reaction when reactants are transformed.
  2. The total area of the exposed surface of an object or substance.
  3. The substances that participate in a chemical reaction, undergoing transformation into products.
  4. A substance that increases the rate of a chemical reaction by lowering the activation energy required for the reaction to occur, without being consumed in the process.
  5. The speed at which a chemical reaction occurs, often measured in terms of how quickly reactants are converted into products.
  6. A measure of the degree of hotness or coldness of an object.
  7. The physical interaction or contact between particles or objects, which can be crucial in chemical reactions.
  8. The measure of the amount of a substance (usually a solute) present in a given volume of a solution.
Down
  1. When particles are available to react, they are considered...
  2. Related to motion or the energy of particles in a system.
  3. The amount of space occupied by an object or substance.
  4. A tiny, discrete unit of matter, which can refer to atoms, molecules, ions, or subatomic particles.
  5. The amount of energy required to start a chemical reaction.
  6. A chemical reaction in which the reactants collide with sufficient energy, and at the correct orientation.
  7. process in which one or more substances (reactants) change into new substances (products) due to chemical interactions.
  8. The specific arrangement or positioning of particles or objects in a particular direction or relative to one another.

16 Clues: The amount of space occupied by an object or substance. • Related to motion or the energy of particles in a system. • The amount of energy required to start a chemical reaction. • A measure of the degree of hotness or coldness of an object. • When particles are available to react, they are considered... • ...

Unit B - Matter and Chemical Change. 2017-11-10

Unit B - Matter and Chemical Change. crossword puzzle
Across
  1. catalyst involved in all living things
  2. change of state from gas to a solid.
  3. a material that electric charge can move through easily
  4. the smallest part of an element that is representative of that element a neutral particle made up of a nucleus containing protons and neutrons
  5. reaction chemical reaction that absorbs energy
  6. substance that helps a chemical reaction to proceed quickly
  7. change that result when two or more substance react to create a different substance or substance the new substances have completely different properties from the original ones.
  8. slow chemical reaction that occurs when oxygen hits metal
  9. description of how a substance interacts with other substance such as acids chemical properties are observable only when a chemical change occurs to form new substances
  10. a vertical column of elements in the periodic table
  11. number of protons in the nucleus of one atom of an element
  12. a reaction that takes place between two elements
  13. mass of atom of an element calculated from the total number of protons neutrons and electrons.
  14. Group 1 elements in the periodic table not including hydrogen the most reactive non metals
Down
  1. reaction chemical reactions that gives off energy
  2. chemical reaction that occurs when oxygen reacts with a substance to form a new substance and gives off energy
  3. ability of a substance to conduct electricity or heat
  4. amount of mass in a given volume of a substance
  5. change of state form a gas to a liquid
  6. group two elements in the periodic table , not including hydrogen, the most reactive of the metals
  7. of mass principle that matter is not created or destroyed. It can not be destroyed or created, the mass is always equal.
  8. chemical combination of two or more elements in specific ration
  9. combination of symbols that represent a compound” the formula identifies the elements into the compound the formula identifies the element s in the compound and the amount of each element

23 Clues: change of state from gas to a solid. • catalyst involved in all living things • change of state form a gas to a liquid • reaction chemical reaction that absorbs energy • amount of mass in a given volume of a substance • a reaction that takes place between two elements • reaction chemical reactions that gives off energy • ...

Chemical reaction and equation - Nahush Chaudhari 2025-04-28

Chemical reaction and equation - Nahush Chaudhari crossword puzzle
Across
  1. A reaction that absorbs heat energy.
  2. A substance that starts a chemical reaction.
  3. A reaction where a substance loses oxygen or gains hydrogen.
  4. An unbalanced chemical equation is also called this type of equation.
  5. A reaction where a single substance breaks down into two or more products.
  6. A reaction that releases heat energy.
  7. An insoluble solid formed during a reaction in solution.
  8. Gradual destruction of metals by reacting with atmospheric substances like oxygen.
Down
  1. Spoiling of fats and oils due to oxidation, often leading to a bad smell and taste.
  2. A substance formed after a chemical reaction.
  3. A reaction where a more reactive element replaces a less reactive one from its compound.
  4. DISPLACEMENT A reaction where two compounds exchange ions to form new compounds.
  5. A chemical equation where the number of atoms of each element is equal on both sides.
  6. A reaction where a substance gains oxygen or loses hydrogen.
  7. A reaction where two or more substances combine to form a single product.

15 Clues: A reaction that absorbs heat energy. • A reaction that releases heat energy. • A substance that starts a chemical reaction. • A substance formed after a chemical reaction. • An insoluble solid formed during a reaction in solution. • A reaction where a substance loses oxygen or gains hydrogen. • A reaction where a substance gains oxygen or loses hydrogen. • ...

Crossword ! 2024-04-23

Crossword ! crossword puzzle
Across
  1. state in which the rate of the forward reaction equals the rate of backward reactions.
  2. speed at which a chemical reactant proceeds.
  3. components in more than one phase
  4. used in the manufacturing of ammonia from nitrogen and hydrogen.
  5. chemical reaction or physical change; heat can be absorbed by the system from the surroundings.
  6. substance which takes part in and undergoes change during a reaction.
  7. the minimum energy required to cause a process to occur.
  8. measure of the relative amounts of products and reactions present in a reaction.
  9. substance that is present after a chemical reaction takes place.
Down
  1. chemical reaction that releases energy
  2. both reactants and products are present in the concentration.
  3. when reactants react to form the products.
  4. expresses the relationship between products and reactants of a reaction.
  5. all species are present in the same phase
  6. where no reactants or products can escape.
  7. measurement of energy in a thermodynamic system.

16 Clues: components in more than one phase • chemical reaction that releases energy • all species are present in the same phase • when reactants react to form the products. • where no reactants or products can escape. • speed at which a chemical reactant proceeds. • measurement of energy in a thermodynamic system. • the minimum energy required to cause a process to occur. • ...

CH 1 REVIEW CROSSWORD 2024-08-31

CH 1 REVIEW CROSSWORD crossword puzzle
Across
  1. is a substance made up of two or more different chemical elements combined in a fixed ratio.
  2. (orbital) - A region around an atomic nucleus, defined by a high probability that the atom's electrons will be in that region; Where the electrons are located.
  3. A subatomic particle found in the nucleus of every atom. It has a positive electrical charge
  4. something that helps a chemical reaction occur
  5. how much a substance can dissolve into another
  6. chemical change in which two or more substances form a new substance with different properties
  7. two or more atoms connected by chemical bonds,
  8. is the ability to do work and transfer heat
  9. a chemical reaction such as oxidation that produces heat and usually light
  10. A negatively charged subatomic particle found in the electron cloud
  11. energy is absorbed/ takes in heat
  12. Two or more mixed up objects that can be unmixed
  13. weight of the atom. Number of neutrons number of protons (electrons are VERY light in mass)
Down
  1. basic particle
  2. Electron(s) located in the outermost shell of an atom that is responsible for the formation of chemical bonds
  3. to become or cause to become incorporated into a liquid
  4. number of protons in an atom
  5. a substance produced by a chemical reaction, different from the reactants
  6. to make thinner
  7. occurs when two different liquid solutions are mixed as reactants.
  8. a substance that undergoes a change in a chemical reaction
  9. a transition from a state of matter to a different state of matter
  10. the substance in a solution that dissolves in the solvent
  11. the form in which matter can be found, which occurs in nature as solid, liquid, gas, or plasma
  12. energy- energy released by a chemical reaction or absorbed during the formation of a chemical compound
  13. A subatomic particle of about the same number as a proton, but neutral to an electric charge.
  14. the liquid substance in which a solute dissolves to form a solution
  15. energy is released/ gives off heat

28 Clues: basic particle • to make thinner • number of protons in an atom • energy is absorbed/ takes in heat • energy is released/ gives off heat • is the ability to do work and transfer heat • something that helps a chemical reaction occur • how much a substance can dissolve into another • Two or more mixed up objects that can be unmixed • ...

Types of Reactions 2024-05-06

Types of Reactions crossword puzzle
Across
  1. The reaction that occurs when a substance gains oxygen or loses hydrogen..
  2. The oxidation of oil or fat containing food items when they are kept in the open for a long time, resulting in unpleasant odour or taste.
  3. A reaction in which a single reactant is broken down into simpler products.
  4. The substance that gets oxidised is also known as this.
  5. A substance that increases or decreases the rate of a chemical reaction without being consumed itself.
  6. The type of decomposition that occurs due to exposure to sunlight. This reaction occurs with compounds like silver chloride and silver bromide.
  7. The type of decomposition that occurs due to supply of heat. This reaction occurs when hydrated ferrous sulphate crystals are heated.
  8. Substance that undergo a chemical change. They are usually found towards the left of the arrow in a chemical equation.
  9. The common name of the layer that is formed on iron when it is exposed to moisture and oxygen.
  10. The reaction in which both reduction and oxidation occur.
  11. A reaction in which heat energy is released into the surroundings.
Down
  1. A substance that inhibits or slows down oxidation.
  2. The name of the insoluble solid that is formed during a precipitation reaction.
  3. A reaction in which an insoluble salt is formed.
  4. The type of decomposition that occurs due to passing of electricity through a compound.
  5. The substance that gets reduced is also known as this.
  6. A reaction in which heat energy is absorbed from the surroundings.
  7. Chip packets are flushed with this gas to prevent the chips from becoming rancid.
  8. Substance that is formed after a chemical change. They are usually found towards the right of the arrow in a chemical equation.
  9. A reaction in which a highly reactive metal displaces/replaces a lesser reactive metal from its salt solution.
  10. Gradual destruction of a metal when it is exposed to moisture, oxygen, acids, or certain gases in the atmosphere.

21 Clues: A reaction in which an insoluble salt is formed. • A substance that inhibits or slows down oxidation. • The substance that gets reduced is also known as this. • The substance that gets oxidised is also known as this. • The reaction in which both reduction and oxidation occur. • A reaction in which heat energy is absorbed from the surroundings. • ...

Helen's Hella Handy & Helpful Crossword!! (Unit 8) 2025-05-16

Helen's Hella Handy & Helpful Crossword!! (Unit 8) crossword puzzle
Across
  1. The substance that loses electrons and is oxidized in an oxidation-reduction reaction.
  2. The point in a titration when the indicator changes color, signaling the completion of the reaction.
  3. The point in a titration at which the amount of acid equals the amount of base.
  4. The substance in a solution that is present in a smaller quantity, often a solid.
  5. A technique in which a solution of known concentration is used to determine the concentration of an unknown solution.
  6. The substance in a solution that is present in the largest quantity, often a liquid.
  7. The maximum amount of product that can be produced from the given amounts of reactants.
  8. The substance that is completely consumed in a chemical reaction, limiting the amount of product formed.
  9. The process of losing electrons during a chemical reaction.
  10. A substance that does not dissociate into ions in solution and does not conduct electricity.
Down
  1. A reaction between an acid and a base that produces water and a salt.
  2. A unit of concentration, defined as the number of moles of solute per liter of solution (M = mol/L).
  3. The ratio of the actual yield to the theoretical yield, multiplied by 100 to give a percentage.
  4. An acid that can donate more than one proton (H+).
  5. Different possible Lewis structures for a molecule or ion that cannot be represented by a single structure.
  6. The process of gaining electrons during a chemical reaction.
  7. A substance that dissociates into ions in solution and can conduct electricity.
  8. The substance that is not completely consumed in a chemical reaction, remaining after the reaction.
  9. The substance that gains electrons and is reduced in an oxidation-reduction reaction.
  10. The amount of product actually produced in a reaction.
  11. A solid that forms in a solution during a chemical reaction.
  12. A homogeneous mixture of two or more substances.

22 Clues: A homogeneous mixture of two or more substances. • An acid that can donate more than one proton (H+). • The amount of product actually produced in a reaction. • The process of losing electrons during a chemical reaction. • The process of gaining electrons during a chemical reaction. • A solid that forms in a solution during a chemical reaction. • ...

Lesson 4 - COMPOUND CHEMISTRY 2020-09-13

Lesson 4 - COMPOUND CHEMISTRY crossword puzzle
Across
  1. potential for hydrogen
  2. man made polymers
  3. substance that speeds up a chemical reaction without being used up in the process
  4. molecules arranged in long repeating chains
  5. energy is released during a chemical reaction
  6. tastes sour, conducts electricity, ruins metal & donates hydrogen ions
  7. when reactants absorb energy
Down
  1. substances you start with in a chemical reaction
  2. substances reactants make
  3. 2 or more substances interact with each other and change into different chemical substances
  4. chemical opposite of an acid
  5. a solid that has a regular repeating arrangement of atoms
  6. doesn't change molecules only changes the way things look
  7. base that works against the acid upsetting your stomach

14 Clues: man made polymers • potential for hydrogen • substances reactants make • chemical opposite of an acid • when reactants absorb energy • molecules arranged in long repeating chains • energy is released during a chemical reaction • substances you start with in a chemical reaction • base that works against the acid upsetting your stomach • ...

S1 Chemical Reactions 2023-03-29

S1 Chemical Reactions crossword puzzle
Across
  1. Go along the rows in a periodic table to find a ...
  2. When two or more types of atom are mixed but not chemically joined, a __________ is formed.
  3. Particles have to do this in order for a chemical reaction to happen.
  4. Elements are made up of one type of ______.
  5. Elements are either metals or ...
  6. Elements which share similar chemical properties are in ___________.
  7. This element has the atomic number 16.
  8. If it's not a chemical reaction, it's a _______ change.
  9. Fluorine, chlorine, bromine and iodine are all in this group.
  10. This non-metal element is a liquid at room temperature.
Down
  1. Seeing these tells us that a chemical reaction has occurred.
  2. Increasing this can increase the rate of reaction.
  3. These negatively charged particles are found on the outer shells of an atom.
  4. The periodic table is made up of these.
  5. This element has the symbol K.
  6. The group 1 ________ metals.
  7. This liquid metal was used in thermometers.
  8. He created the periodic table.
  9. These speed up a chemical reaction without getting used up.
  10. When two or more types of atoms are chemically joined, a _____________ is formed.

20 Clues: The group 1 ________ metals. • This element has the symbol K. • He created the periodic table. • Elements are either metals or ... • This element has the atomic number 16. • The periodic table is made up of these. • Elements are made up of one type of ______. • This liquid metal was used in thermometers. • Increasing this can increase the rate of reaction. • ...

Crossword 2014-08-19

Crossword crossword puzzle
Across
  1. A red-brown metal, the chemical element of atomic number 29.
  2. Displacement Reaction A chemical reaction where two reactant ionic compounds exchange ions to form two new product compounds with the same ions.
  3. Reaction A reaction in which soluble ions in separate solutions are mixed together to form an insoluble compound that settles out of solution as a solid.
  4. A mixture of finely powdered aluminium and iron oxide that produces a very high temperature on combustion, used in welding and for incendiary bombs.
  5. Displacement Reaction Type of reaction where part of one reactant is replaced by another reactant.
  6. Reaction Two or more reactants combine to form a single product.
  7. A substance that takes part in and undergoes change during a reaction.
Down
  1. Equation A chemical reaction expressed in words rather than chemical formulas.
  2. A substance that is formed as the result of a chemical reaction
  3. Reaction The separation of a chemical compound into elements or simpler compounds
  4. of Mass A relation stating that in a chemical reaction, the mass of the products equals the mass of the reactants.
  5. A substance which has a molecular structure built up almost or completely from a large number of similar units bonded together
  6. Reaction Interaction of two or more chemicals that produces one or more new chemical compounds, or alters the properties of the mixed chemicals.

13 Clues: A red-brown metal, the chemical element of atomic number 29. • A substance that is formed as the result of a chemical reaction • Reaction Two or more reactants combine to form a single product. • A substance that takes part in and undergoes change during a reaction. • Equation A chemical reaction expressed in words rather than chemical formulas. • ...

Chemical Reaction Crossword Puzzle 2020-04-23

Chemical Reaction Crossword Puzzle crossword puzzle
Across
  1. Table salt is an example of
  2. Two or more reactants combine to form a single
  3. Burning coal is an example of
  4. One reactant breaks down into two or more products
  5. Water is an example of
  6. Any substance that is consumed or used up during the reaction
  7. Smallest particle in a chemical element or compound
  8. Iron and water combining to make rust is an example of
  9. Copper is an example of
  10. A substance that speeds up a chemical reaction
  11. Consisting of one atom
Down
  1. Water is a ____ of methane and oxygen
  2. How many atoms or molecules an element has
  3. A number used to multiply a variable
  4. Complete transfer valence electrons between atoms
  5. One element replaces another in a single compound
  6. Hydrogen chloride is an example of
  7. A brick is an example of
  8. Oxygen is an example of
  9. Saltwater is an example of

20 Clues: Water is an example of • Consisting of one atom • Oxygen is an example of • Copper is an example of • A brick is an example of • Saltwater is an example of • Table salt is an example of • Burning coal is an example of • Hydrogen chloride is an example of • A number used to multiply a variable • Water is a ____ of methane and oxygen • How many atoms or molecules an element has • ...