chemical reaction Crossword Puzzles

Skibidi toilet gyatt from TikTok rizz party in Ohio makes the sigma alpha come out from red dress girl with Turkish quandale dingle mogs handsome Squidward from lookmaxxing university 2024-05-16

Skibidi toilet gyatt from TikTok rizz party in Ohio makes the sigma alpha come out from red dress girl with Turkish quandale dingle mogs handsome Squidward from lookmaxxing university crossword puzzle
Across
  1. a substance that is added to soil to help plants grow
  2. a usually miniature representation of something
  3. the temperature at which it starts to change into steam or vapor
  4. a group of atoms joined together in a particular way
  5. the relative size of things
  6. a particle of matter that uniquely defines a chemical element
  7. a starting substance that is part of a chemical reaction
  8. formed when atoms, ions, or molecules are arranged in a pattern that repeats in three dimensions
Down
  1. the temperature at which is given solid will melt
  2. a set of chemical symbols showing the elements present in a compound and their relative porportions
  3. able to cause damage
  4. something that is made of all the same atoms or groups
  5. the change of one type of matter into another type
  6. an ending substance that is part of a chemical reaction
  7. to change the order or position

15 Clues: able to cause damage • the relative size of things • to change the order or position • a usually miniature representation of something • the temperature at which is given solid will melt • the change of one type of matter into another type • a group of atoms joined together in a particular way • a substance that is added to soil to help plants grow • ...

Mechanism 2024-10-14

Mechanism crossword puzzle
Across
  1. Stated that the alkene which has least alkyl substituents will predominate. (Hoffman)
  2. A mechanism involving a species that donates an electron pair.(Nucleophilic)
  3. A reaction mechanism where a small molecule is removed, forming a double bond. (Elimination)
  4. a theoretical conjecture that tries to describe in detail what takes place at each stage of an overall chemical reaction.(Mechanism)
  5. A type of nucleophilic substitution mechanism that is bimolecular. (SN2)
  6. a reaction in which the functional group of one chemical compound is substituted by another group(Substitution)
Down
  1. A reaction gives a structural isomer of the original molecule. (Rearrangement)
  2. Reaction where molecule losses oxygen or gain one or more electron. (Reduction )
  3. A mechanism where two reactants combine to form a larger molecule (Addition)
  4. A reaction where an increase in oxidation state occurs. (Oxidation)
  5. Said that the predominate alkene would be the one with most alkyl substituents.(Saytzeff )
  6. A type of nucleophilic substitution mechanism that is unimolecular. (SN1)

12 Clues: A reaction where an increase in oxidation state occurs. (Oxidation) • A type of nucleophilic substitution mechanism that is bimolecular. (SN2) • A type of nucleophilic substitution mechanism that is unimolecular. (SN1) • A mechanism where two reactants combine to form a larger molecule (Addition) • ...

Chapter 10 2023-05-09

Chapter 10 crossword puzzle
Across
  1. Causes reduction to happen (2 words)
  2. A process in which an electron is removed from a molecule during a chemical reaction
  3. Two processes considered as complementary processes
  4. A process in which an electron is added to a molecule during a chemical reaction
  5. Used to identify a specific reaction or specific substances (2 words)
Down
  1. Is always 0 in an element(2 words)
  2. A reaction that involves the transfer of electrons (2 words)
  3. Element that is a common identifier of a specific reaction
  4. Causes oxidation to happen (2 words)
  5. A reaction in which a substance reacts with oxygen gas, releasing energy in the form of light and heat

10 Clues: Is always 0 in an element(2 words) • Causes reduction to happen (2 words) • Causes oxidation to happen (2 words) • Two processes considered as complementary processes • Element that is a common identifier of a specific reaction • A reaction that involves the transfer of electrons (2 words) • Used to identify a specific reaction or specific substances (2 words) • ...

Atoms 2023-04-28

Atoms crossword puzzle
Across
  1. Shows a chemical equation happened
  2. The chemical formula after a chemical reaction
  3. a neutrally charged subatomic particle
  4. The chemical formula before a chemical reaction
Down
  1. The number below the atom
  2. a negatively charged subatomic particle
  3. a positively charged subatomic particle
  4. The big number at the beginning of a chemical formula

8 Clues: The number below the atom • Shows a chemical equation happened • a neutrally charged subatomic particle • a negatively charged subatomic particle • a positively charged subatomic particle • The chemical formula after a chemical reaction • The chemical formula before a chemical reaction • The big number at the beginning of a chemical formula

Honors Biology Chapter 2: Chemistry of Life - Vocabulary 2016-09-06

Honors Biology Chapter 2: Chemistry of Life - Vocabulary crossword puzzle
Across
  1. simplest particle of an element that retains all the properties of that element
  2. atom or molecule with an electrical charge
  3. attractive force between a hydrogen molecule with a with a partial positive charge and another atom or molecule with a partial or full negative charge
  4. protein or RNA molecule that speeds up metabolic reactions without being permanently changed or destroyed
  5. center of the atom, makes up most of the mass, contains protons and neutrons
  6. positively charged particle
  7. substances formed during a chemical reaction, shown on the right side of a chemical equation
  8. the amount of solute dissolved in a fixed amount of solvent
  9. reduce the amount of activation energy needed for a reaction to take place
  10. compares the relative concentrations of hydronium ions and hydroxide ions in a solution, ranges from 0-14, 0 is very acidic, 7 is neutral, & 14 is very basic
  11. 3-dimensional region around a nucleus that indicated the probable location of an electron
  12. all of the chemical reactions that occur in an organism
  13. solution that has a greater number of hydronium ions than hydroxide ions
  14. solution in which water is the solvent
  15. starting substances in a chemical reaction, shown on the left side of a chemical equation
  16. reaction in which a reactant gains one or more electrons becoming more negative in charge
  17. one or more substances change to produce one or more different substances
  18. negatively charged particle
  19. reaction in which a reactant loses one or more electrons becoming more positive in charge
  20. substances that cannot be broken down chemically into simpler kinds of matter
  21. mixture in which one or more substances are uniformly distributed in another substance
  22. the H3O+ ion created when a free H+ ion reacts with a water molecule
  23. attractive force between two particles of different substances
  24. atoms of 2 or more elements that are combined in fixed proportions
  25. solution that has a greater number of hydroxide ions than hydronium ions
  26. particle that has no charge
  27. chemical substances that neutralize small amounts of either an acid or a base added to a solution
Down
  1. forms when 2 atoms share one or more pairs of electrons
  2. number of protons in an atom
  3. atoms of the same element that have a different number of neutrons
  4. the OH- ion created when one water molecule pulls apart another water molecule
  5. anything that occupies space and has mass
  6. reaction in which electrons are transferred between atoms
  7. amount of energy needed to start a reaction
  8. the quantity of matter an object has
  9. attractive force that holds atoms together
  10. solution in which no more solute can dissolve
  11. substance in which the solute is dissolved
  12. equal to the total number of protons and neutrons of an atom
  13. simplest part of a substance that retains all of the properties of that substance
  14. attraction between molecules that results in the rise of the surface of a liquid when in contact with a solid
  15. substance dissolved in the solvent
  16. attractive force between oppositely charged ions which form when electrons are transferred from one atom to another
  17. attractive force that holds molecules of a single substance together
  18. molecule with unevenly distributed charges
  19. the ability to do work

46 Clues: the ability to do work • positively charged particle • negatively charged particle • particle that has no charge • number of protons in an atom • substance dissolved in the solvent • the quantity of matter an object has • solution in which water is the solvent • anything that occupies space and has mass • atom or molecule with an electrical charge • ...

Chapter 7 vocabulary 2021-12-06

Chapter 7 vocabulary crossword puzzle
Across
  1. its absorbs the heat energy.
  2. is the amount of substance in the volume
  3. thinsg that form as a reslut of the reaction accures
  4. a process that makes chemical change
  5. its absorbs the heat of the energy.
Down
  1. it lets chemists know at a glace the reactants
  2. its the amount of the energy in something
  3. Things that are there before the reaction begins
  4. its lets you know how fast a reaction is after it started
  5. things that slow down a chemical reaction

10 Clues: its absorbs the heat energy. • its absorbs the heat of the energy. • a process that makes chemical change • is the amount of substance in the volume • its the amount of the energy in something • things that slow down a chemical reaction • it lets chemists know at a glace the reactants • Things that are there before the reaction begins • ...

Chapter 7 vocabulary 2021-12-06

Chapter 7 vocabulary crossword puzzle
Across
  1. its absorbs the heat energy.
  2. is the amount of substance in the volume
  3. thinsg that form as a reslut of the reaction accures
  4. a process that makes chemical change
  5. its absorbs the heat of the energy.
Down
  1. it lets chemists know at a glace the reactants
  2. its the amount of the energy in something
  3. Things that are there before the reaction begins
  4. its lets you know how fast a reaction is after it started
  5. things that slow down a chemical reaction

10 Clues: its absorbs the heat energy. • its absorbs the heat of the energy. • a process that makes chemical change • is the amount of substance in the volume • its the amount of the energy in something • things that slow down a chemical reaction • it lets chemists know at a glace the reactants • Things that are there before the reaction begins • ...

Chapter 7 vocabulary 2021-12-06

Chapter 7 vocabulary crossword puzzle
Across
  1. its absorbs the heat energy.
  2. is the amount of substance in the volume
  3. thinsg that form as a reslut of the reaction accures
  4. a process that makes chemical change
  5. its absorbs the heat of the energy.
Down
  1. it lets chemists know at a glace the reactants
  2. its the amount of the energy in something
  3. Things that are there before the reaction begins
  4. its lets you know how fast a reaction is after it started
  5. things that slow down a chemical reaction

10 Clues: its absorbs the heat energy. • its absorbs the heat of the energy. • a process that makes chemical change • is the amount of substance in the volume • its the amount of the energy in something • things that slow down a chemical reaction • it lets chemists know at a glace the reactants • Things that are there before the reaction begins • ...

Chemistry Terms 2024-01-04

Chemistry Terms crossword puzzle
Across
  1. A substance that undergoes a change during the reaction.
  2. that elements or compounds undergo to form a new substance.
  3. Smell
  4. A representation of a chemical reaction using symbols to represent elements in the reaction.
  5. An observable and measurable physical characteristic.
Down
  1. The temperature where a solid turns to a liquid.
  2. Substance's ability to be dissolved into another substance.
  3. Substances produced from a chemical reaction
  4. The temperature where a liquid changes to a gas.
  5. Mass cannot be created or destroyed within a closed system.

10 Clues: Smell • Substances produced from a chemical reaction • The temperature where a solid turns to a liquid. • The temperature where a liquid changes to a gas. • An observable and measurable physical characteristic. • A substance that undergoes a change during the reaction. • that elements or compounds undergo to form a new substance. • ...

Matter and Chemical Change Sections 1 and 2 2023-01-14

Matter and Chemical Change Sections 1 and 2 crossword puzzle
Across
  1. Tells the number of protons and electrons of the element.
  2. Okay conductors, brittle solids.
  3. Weight of an element. Protons + Neutrons = the answer
  4. Most reactive metals.
  5. Philosopher who believed all matter is composed of air, fire, earth, and water.
  6. Pure substance. Made of 2+ elements
  7. Don't react with anything.
  8. Philisopher who believed matter was composed of tiny, indivisible particles he called atomos.
  9. Mixture. You can see the different parts.
Down
  1. Electrons in the outermost energy level that is not full.
  2. Pure substance. Made of 1 type of atom
  3. Energy is realeased/absorbed and a new substance is formed.
  4. Electrons orbit the nuculues in specific levels.
  5. Properties that are only seen after a chemical reaction - ability to burn, behaviour in air, flash point, reaction to heat, reaction to water, reaction to acids, and reaction to red and blue litmus.
  6. Created the Plum Pudding Model. Said that atoms have one large positive chage and negative charges embedded in it.
  7. Mixture. You can't see the different parts.
  8. Properties that are observable - ductility, malleability, state, solubility, magnetism, boil/melt point, crystal formation, colour, and conductivity.
  9. Second most reactive metals.
  10. Good conductors, shiny, malleable, and ductile.
  11. Most reactive non-metals.
  12. All elements are composed of atoms. Created the Billiard Ball Model.
  13. Bad conductors, dull, brittle.
  14. Eletrons orbit an extremely dense core.
  15. Atoms of the same element with different numbers of neutrons.

24 Clues: Most reactive metals. • Most reactive non-metals. • Don't react with anything. • Second most reactive metals. • Bad conductors, dull, brittle. • Okay conductors, brittle solids. • Pure substance. Made of 2+ elements • Pure substance. Made of 1 type of atom • Eletrons orbit an extremely dense core. • Mixture. You can see the different parts. • ...

Types Of Reaction 2024-05-09

Types Of Reaction crossword puzzle
Across
  1. Reaction in which a single reactant breaks down to form simpler products.
  2. Double displacement reaction in which an insoluble solid that is insoluble in water, emerges from a liquid solution.
  3. Decomposition reaction in which decomposition occurs by applying electricity.
  4. Substance that speeds up a chemical reaction.
  5. Decomposition reaction in which decomposition is carried out by heating.
  6. Formation of a single product from two or more reactants.
  7. Decomposition reaction in which decomposition occurs in the presence of sunlight/light.
Down
  1. Reaction in which heat energy is released along with formation of products.
  2. Reaction in which heat energy is absorbed along with formation of products.
  3. When fats and oils are oxidized causing a change in smell and change.
  4. Reaction in which a highly reactive metal displaces a less reactive metal from its salt solution.
  5. Reaction in which an acid and a base react to form water and salt.
  6. Reaction in which both oxidation and reduction takes place simultaneously.
  7. Reaction in which a substance loses oxygen during a reaction or if it gains hydrogen.
  8. Gradual destruction of a metal when exposed to oxygen, moisture, gases in the atmosphere.

15 Clues: Substance that speeds up a chemical reaction. • Formation of a single product from two or more reactants. • Reaction in which an acid and a base react to form water and salt. • When fats and oils are oxidized causing a change in smell and change. • Decomposition reaction in which decomposition is carried out by heating. • ...

BIOCHEMISTRY 2015-02-01

BIOCHEMISTRY crossword puzzle
Across
  1. A sugar (carbohydrate) composed of two monosaccharides, thus yields two monosaccharide molecules on complete hydrolysis
  2. A simple sugar, example: fructose, glucose, and ribose.
  3. The passive movement of molecules or particles along a concentration gradient, or from regions of higher to regions of lower concentration
  4. A lipid consisting of a glycerol bound to two fatty acids and a phosphate group
  5. The basic building block of nucleic acids, It is an organic compound made up of nitrogenous base, a sugar, and a phosphate group
  6. They are chemical compounds which yield hydrogen ions or protons when dissolved in water
  7. Any of the group of organic compounds consisting of carbon, hydrogen, and oxygen, usually in the ratio of 1:2:1
  8. The presence of or having distinct and opposite poles
  9. A liquid in which substances (or solutes) are dissolved forming a solution
  10. ACID The building block of protein in which each is coded for by a codon and linked together through peptide bonds
  11. Describes a chemical reaction that absorbs energy (usually in the form of heat)
  12. A type of homogenous mixture in which the particles of one or more substances (the solute) are distributed uniformly throughout another substance (the solvent)
  13. ENERGY The energy that an atomic system must acquire before a process (can occur
  14. A fatty or waxy organic compound that is readily soluble in nonpolar solvent (e.g. ether) but not in polar solvent (e.g water)
  15. the act or state of adhering; state of being adhered or united
  16. A double-stranded nucleic acid that contains the genetic information for cell growth, division, and function
Down
  1. A type of RNA that carries the code or chemical blueprint for a specific protein
  2. A large complex molecule, such as nucleic acids, proteins, carbohydrates, and lipids, with relatively large molecular weight
  3. molecules that catalyze (i.e., increase the rates of) chemical reactions
  4. Any of a class of carbohydrates formed by repeating units linked together by glycosidic bonds
  5. An extremely small particle or substance, especially at cellular or structural leve
  6. a chemical substance formed as a result of a chemical reaction
  7. An energy-rich compound made up of a single molecule of glycerol and three molecules of fatty acid, and serves as a major component of animal and plant oils and fats
  8. it is a measure to determine the acidity or alkalinity of a solution or a substance
  9. The act, state or process of sticking together
  10. A substance capable of initiating or speeding up a chemical reaction
  11. A substance consisting of atoms or ions of two or more elements that are chemically bonded together
  12. describes a chemical reaction that releases energy (usually in the form of heat)
  13. A substance taking part in a chemical reaction
  14. ACID Any of the group of a long chain of hydrocarbon derived from the breakdown of fats (through a process called hydrolysis). It has a single carboxylic group andaliphatic tail.
  15. (usually water molecules) through a semipermeable membrane from an area of low solute concentration to an area of high solute concentration.
  16. ACID Any of the group of complex compounds consisting of linear chains of monomeric nucleotides whereby each monomeric unit is composed of phosphoric acid, sugar and nitrogenous base,
  17. water-soluble compound that reacts with acid
  18. group of synthetic hormones including prednisone, prednisolone, methylprednisolone and dexamethasone
  19. A molecule composed of polymers of amino acids joined together by peptide bonds. It can be distinguished from fats and carbohydrates by containing nitrogen.

35 Clues: water-soluble compound that reacts with acid • The act, state or process of sticking together • A substance taking part in a chemical reaction • The presence of or having distinct and opposite poles • A simple sugar, example: fructose, glucose, and ribose. • a chemical substance formed as a result of a chemical reaction • ...

Chemistry Unit 6 vocab 2016-04-18

Chemistry Unit 6 vocab crossword puzzle
Across
  1. insoluble solid that form from two liquids
  2. charge of an atomic ion
  3. lose electrons
  4. an element from both compounds switch places
  5. 1 substance break into two products
  6. hydrocarbon reacts with oxygen and products are always water and carbon dioxide
Down
  1. tendency of a substance to experience a chemical reaction either by itself or with other materials
  2. a single element replace the element of the other
  3. gain electrons
  4. 2 substances combine into 1 product
  5. a chemical reaction that has one of the products as a precipitate
  6. reaction between an acid and a base producing a neutral solution
  7. a decreasing list of metals that ranked reactivity
  8. ability of a substance (solute) to dissolve in a solvent
  9. ionic equation an equation that only include the ions that react

15 Clues: gain electrons • lose electrons • charge of an atomic ion • 2 substances combine into 1 product • 1 substance break into two products • insoluble solid that form from two liquids • an element from both compounds switch places • a single element replace the element of the other • a decreasing list of metals that ranked reactivity • ...

Midterm Review 6 2025-12-02

Midterm Review 6 crossword puzzle
Across
  1. Light-independent reactions that fix carbon into sugars
  2. Measure of hydrogen ion concentration (abbr.)
  3. Pathways that break down molecules and release energy
  4. Substance that increases hydrogen ion concentration in solution
  5. Process converting light energy into chemical energy and producing oxygen
  6. Solution that minimizes changes in pH
Down
  1. Energy‑absorbing chemical reaction
  2. Tool used to accurately measure and transfer microliter volumes
  3. Energy‑releasing chemical reaction
  4. Substance that decreases hydrogen ion concentration in solution
  5. Plot used to determine concentration of unknowns from known standards
  6. Use of microscopes to view small structures

12 Clues: Energy‑absorbing chemical reaction • Energy‑releasing chemical reaction • Solution that minimizes changes in pH • Use of microscopes to view small structures • Measure of hydrogen ion concentration (abbr.) • Pathways that break down molecules and release energy • Light-independent reactions that fix carbon into sugars • ...

Redox - Equilibrium 2022-04-19

Redox - Equilibrium crossword puzzle
Across
  1. Heat flowing into or within a system
  2. "Substance that increases the rate of a chemical reaction"
  3. When something continues to stay the same
  4. SI base unit for temperature
  5. A solo substance in a reaction
  6. "State of balance between opposing forces or actions"
Down
  1. Word used to express heat
  2. "The measure of how much of a given substance there is mixed with another substance"
  3. Appears at the end of a reaction
  4. Appears at the begging of a reaction
  5. Heat flowing into or within a system
  6. Force applied to a substance
  7. Measure of speed
  8. When one thing bumps into another
  9. When a reaction leans towards one side

15 Clues: Measure of speed • Word used to express heat • Force applied to a substance • SI base unit for temperature • A solo substance in a reaction • Appears at the end of a reaction • When one thing bumps into another • Heat flowing into or within a system • Appears at the begging of a reaction • Heat flowing into or within a system • When a reaction leans towards one side • ...

Changes of matter 2023-07-27

Changes of matter crossword puzzle
Across
  1. Something that is made from mixing other substances.
  2. Slippery to touch, tastes bitter, turn red litmus paper blue.
  3. A substance that changes during reaction.
  4. (of a reaction or process) accompanied by or requiring the absorption of heat.
  5. reaction a process that involves rearrangement of the molecular or ionic structure of a substance, as distinct from a change in physical form or a nuclear reaction.
  6. Corrosive, sour tasting liquid.
Down
  1. (of a reaction or process) accompanied by the release of heat.
  2. physical substance in general, makes up everything.
  3. Chemical process where substances act mutually on each other and undergoes change
  4. The process of burning something.

10 Clues: Corrosive, sour tasting liquid. • The process of burning something. • A substance that changes during reaction. • physical substance in general, makes up everything. • Something that is made from mixing other substances. • Slippery to touch, tastes bitter, turn red litmus paper blue. • (of a reaction or process) accompanied by the release of heat. • ...

Enzymes 4.1.3 2024-02-07

Enzymes 4.1.3 crossword puzzle
Across
  1. The most important factor in determining specificity.
  2. A reaction that BUILDS the substrate.
  3. __________ can change the shape of an enzyme.
  4. What are enzymes made out of?
  5. An _______ pH or temperature is the pH or temperature that the enzyme performs best at.
  6. Three letters that MANY enzymes end with.
  7. The catalyst _________ the rate of the reaction.
  8. Since enzymes are made of proteins, they are technically made of ______.
  9. Protein molecules that act as biological catalysts.
  10. Enzymes are _______.
  11. A molecule that is able to bind to the enzyme and block the substrate.
  12. A reaction that BREAKS the substrate.
  13. The name of a hypothesis that helps explain enzyme function.
  14. The biological molecule that the enzyme will work on.
Down
  1. Pancreatic amylase breaks down _____.
  2. What the substrate becomes after the enzyme lets go.
  3. An enzyme can become ________ if it is exposed to extreme highs or lows of temperature or acidity.
  4. The act of taking away water in order to bind molecules.
  5. The act of adding water in order to break apart molecules.
  6. The type of activities enzymes activate.
  7. Asenzyme _________ increases, the rate of reaction increases then plateaus.
  8. The percentage of hydrogen ions in a solution.
  9. The substrate has to ____ the active site in order to form a bond.
  10. A substance that increases the rate of a chemical reaction.
  11. A specifically shaped area of the enzyme that fits around the substrate.

25 Clues: Enzymes are _______. • What are enzymes made out of? • Pancreatic amylase breaks down _____. • A reaction that BUILDS the substrate. • A reaction that BREAKS the substrate. • The type of activities enzymes activate. • Three letters that MANY enzymes end with. • __________ can change the shape of an enzyme. • The percentage of hydrogen ions in a solution. • ...

Chapter 2 2019-01-17

Chapter 2 crossword puzzle
Across
  1. a solution that resists changes in pH when acid or alkali is added to it.
  2. (atomic __)letters that represent an element
  3. (protein)spheroproteins
  4. Basic unit of a chemical element.
  5. Composed of 2 or more elements.
  6. amino acid
  7. an atom or molecule with a net electric charge due to the loss or gain of one or more electrons.
  8. electrical charge
  9. the emission of ionizing radiation or particles caused by the spontaneous disintegration of atomic nuclei.
  10. a carbohydrate whose molecules consist of a number of sugar molecules bonded together.
  11. particle with a negative charge
  12. created in 1869
  13. chemical reaction in which an acid and a base react quantitatively with each other.
  14. the outermost shell of an atom containing the valence electrons.
  15. Adenosine triphosphate
  16. Energy form directly involved in putting the matter into motion.
  17. a substance produced by a living organism which acts as a catalyst to bring about a specific biochemical reaction.
  18. any of a class of sugars whose molecules contain two monosaccharide residues.
  19. fibrous proteins
  20. particle with a neutral charge
  21. each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei
  22. Carbon-containing compound.
  23. a weak bond between two molecules resulting from an electrostatic attraction between a proton in one molecule and an electronegative atom in the other.
  24. Positive subatomic particle.
Down
  1. (protein) antibodies is an example of this
  2. one of a class of substances that cannot be separated into simpler substances by chemical means.
  3. Lack of carbon; compound.
  4. include wax and oil; fatty acid
  5. single sugar
  6. (model) also known as Bohr’s atomic model
  7. a radioactive isotope.
  8. deoxyribonucleic acid
  9. anything that has mass and takes up space
  10. the ionized or ionizable constituents of a living cell, blood, or other organic matter.
  11. a bond involving the sharing of electrons netween atoms
  12. A bond that forms when electrons are transferred from one atom to another.
  13. a measure of the hydorgen ion concentration of a solution
  14. A reaction where 2 or more molecules or atoms combine to form a larger and more complex molecule.
  15. form the basic structural unit of nucleic acids
  16. a substance that accepts hydrogen ions
  17. organic compound composed of carbon, hydrogen, and oxygen; includes starches, sugars, and glucose.
  18. a substance that liberates hydrogen ions when in an aqueous solution.
  19. a region on an enzyme that binds to a protein or other substance during a reaction.
  20. energy that travels by waves or particles
  21. A reaction where bonds are broken.
  22. a group of atoms bonded together
  23. (reaction)process in which molecules are formed, changed, or broken down.
  24. (atomic __) A number equal to the sum of all the neutrons and the protons in an atom's nucleus.
  25. A reaction where bonds are broken and combined.
  26. another term would be inert energy
  27. (atomic __)atomic mass
  28. a change from one state (solid or liquid or gas) to another without a change in chemical composition
  29. ribonucleic acid
  30. the energy of a body or a system with respect to the motion of the body or of the particles in the system.
  31. (atomic __) the number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table.

55 Clues: amino acid • single sugar • created in 1869 • fibrous proteins • ribonucleic acid • electrical charge • deoxyribonucleic acid • a radioactive isotope. • Adenosine triphosphate • (atomic __)atomic mass • (protein)spheroproteins • Lack of carbon; compound. • Carbon-containing compound. • Positive subatomic particle. • particle with a neutral charge • include wax and oil; fatty acid • ...

8 - Period Table & Food and digestion v2021-02-08 2021-02-08

8 - Period Table & Food and digestion v2021-02-08 crossword puzzle
Across
  1. Vertical column on the Perodic Table
  2. Horizontal row on the Periodic Table
  3. Smallest particle that can be obtained in a chemical reaction
  4. A group of organs that carry out digestion.
  5. A way of writing out what happens in a chemical reaction.
Down
  1. Last group on the Periodic Table
  2. Substance made of two or more different types of atom bonded together
  3. Waste food material produced by the intestines.
  4. Temperature at which a liquid turns to a gas
  5. A substance that reacts together with another substance to form products during a chemical reaction.

10 Clues: Last group on the Periodic Table • Vertical column on the Perodic Table • Horizontal row on the Periodic Table • A group of organs that carry out digestion. • Temperature at which a liquid turns to a gas • Waste food material produced by the intestines. • A way of writing out what happens in a chemical reaction. • ...

Chem. Menu 6 Crossword puzzle 2024-01-31

Chem. Menu 6 Crossword puzzle crossword puzzle
Across
  1. delta H equals one mole of a compound
  2. the sum of the delta H of the individual reaction
  3. Form Kinetic energy related to random motion of particles
  4. the substance undergoing chemical or physical change
  5. process that releases heat energy to the surroundings
  6. Amount of heat required to raise temperature of a substance
  7. The capacity to do work or transfer heat
  8. the process of measuring the amount of heat released or absorbed during a chemical reaction
  9. lots of movement "hot"
Down
  1. insulated device used for measuring heat changes in chemical and physical process
  2. picture or words to describe something
  3. Everything outside the system
  4. process that absorbs heat energy from the surroundings
  5. less movement "cold"
  6. quantitative measurements of "hot" or "cold"
  7. used to describe the amount of something
  8. Energy in and physical changes in terms of the flow and measurement of the energy
  9. a thermodynamic quantity equivalent to the total heat content of a system
  10. transfer of energy

19 Clues: transfer of energy • less movement "cold" • lots of movement "hot" • Everything outside the system • delta H equals one mole of a compound • picture or words to describe something • used to describe the amount of something • The capacity to do work or transfer heat • quantitative measurements of "hot" or "cold" • the sum of the delta H of the individual reaction • ...

8.P.1 Chemistry 2021-05-20

8.P.1 Chemistry crossword puzzle
Across
  1. a positive subatomic particle found in the nucleus of an atom
  2. matter made up of two or more substances that are not joined chemically
  3. a group of chemical symbols and numbers that shows the number of atoms of each element in a molecule
  4. pH of less than 7
  5. new substances formed in a chemical reaction and that they are located on the right side of the arrow in a chemical equation
  6. the ease and speed with which an element combines, or reacts, with other elements and compounds
  7. a characteristic of a substance that cannot be observed without changing the identity of the substance
  8. a change in substance that does not change the chemical makeup of the substance
  9. a pure substance that cannot be broken down into other substances by chemical or physical means
  10. a system in which no matter is allowed to enter or leave
  11. an element that conducts heat and electricity well, is shiny, and can be hammered into sheets or drawn into wires
  12. substances broken apart or combined in a chemical reaction and they are located on the left side of the arrow in a chemical equation
  13. a description of a chemical reaction using chemical formulas, subscripts and coefficients
  14. a mixture in which substances are evenly distributed
  15. the ability of an object to transfer heat or electricity to another object
  16. the basic building block of most of the matter around us
  17. elements in the same vertical column of the periodic table
  18. an element that does not conduct heat or electricity well and is dull and brittle or gaseous
  19. 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 the reaction
Down
  1. the number of protons in the nucleus of an atom
  2. a chart of elements showing the repeating pattern of their properties
  3. a term used to describe a material that can be pulled out into a long wire
  4. a pure substance that forms when two or more elements join chemically in a fixed proportion
  5. a term used to describe a material that can be pounded into shapes
  6. scale used to classify solutions
  7. a solid substance formed when two solutions are chemically combined
  8. the average mass of all the isotopes of an element
  9. pH of more than 7
  10. a system in which matter can enter from or escape to the surroundings
  11. result in the formation of one or more new substances with new chemical and physical properties
  12. a mixture in which substances are not distributed evenly
  13. a characteristic of a substance that can be observed directly or measured with a tool without changing the identity of the substance
  14. a subatomic particle with no charge and is found in the nucleus of the atom
  15. a specific number of atoms of the element found in each molecule of a substance
  16. elements that has some properties of both metals and nonmetals
  17. the number of electrons found in the outer shell
  18. a group of two or more atoms held together by chemical bonds
  19. a negatively charged subatomic particle found outside the nucleus of an atom

38 Clues: pH of less than 7 • pH of more than 7 • scale used to classify solutions • the number of protons in the nucleus of an atom • the number of electrons found in the outer shell • the average mass of all the isotopes of an element • a mixture in which substances are evenly distributed • a mixture in which substances are not distributed evenly • ...

Hannah mullane - chemistry crossword 2014-11-17

Hannah mullane - chemistry crossword crossword puzzle
Across
  1. Is sodium hydroxide (NaOH) an acid or base?
  2. Ra is the symbol for?
  3. What is the name given to substances that are initially involved in a chemical reaction?
  4. What is the first element on the periodic table?
  5. is the fourth most abundant element in the universe in terms of mass?
  6. What orbits the nucleus of an atom?
  7. Atoms of the same chemical element that have different atomic mass are known as?
  8. What is the chemical symbol for gold?
Down
  1. What is the third most common gas found in the air we breathe?
  2. What is the main gas found in the air we breathe?
  3. At room temperature, what is the only metal that is in liquid form?
  4. What is H20 more commonly known as?
  5. K is the chemical symbol for which element?
  6. What is the centre of an atom called?
  7. True or false? Acids have a pH level below 7.

15 Clues: Ra is the symbol for? • What is H20 more commonly known as? • What orbits the nucleus of an atom? • What is the centre of an atom called? • What is the chemical symbol for gold? • Is sodium hydroxide (NaOH) an acid or base? • K is the chemical symbol for which element? • True or false? Acids have a pH level below 7. • What is the first element on the periodic table? • ...

Metabolic Processes 2012-05-30

Metabolic Processes crossword puzzle
Across
  1. To build the body
  2. Large molecules made up of large numbers of repeating subunits
  3. Controls movement into and out of Nucleus
  4. The absorption of energy by an atom's electron
  5. Transform light energy into the cemical potential energy in glucose and other carbohydrates
  6. Any agent that accelerates chemical reaction without altering it
Down
  1. The full name for ATP
  2. Protective barrier that surrounds a cell
  3. One of the four major macromolecules
  4. Chemical change in body tissue that converts nutrients into energy
  5. Discovered that air plays a role in photosynthesis
  6. Obtaining molecules of food by ingesting or manufacturing them
  7. Protein catalyst that speeds up chemical reaction without being processed
  8. To break down

14 Clues: To break down • To build the body • The full name for ATP • One of the four major macromolecules • Protective barrier that surrounds a cell • Controls movement into and out of Nucleus • The absorption of energy by an atom's electron • Discovered that air plays a role in photosynthesis • Large molecules made up of large numbers of repeating subunits • ...

Chemistry Crossword 2022-04-08

Chemistry Crossword crossword puzzle
Across
  1. The best university ever
  2. When a chemical equation has the same number of atoms for each element on both sides
  3. ___thermic reactions feel cold
  4. The branch of chemistry involving calculations about quantities of reactants and products
  5. Your school's mascot
  6. Your chemistry teacher's last name
  7. When 1 element gets “kicked out” and replaced by another, it's called ____ replacement
Down
  1. The number of particles in one mole was named after this scientist
  2. A type of chemical reaction that creates fire
  3. 1 reactant breaks down into 2 (or more) products
  4. Speeds up a chemical reaction
  5. 2 (or more) reactants combine to form 1 product
  6. When 2 compounds “switch partners,” it's called ____ replacement
  7. ___thermic reactions feel hot

14 Clues: Your school's mascot • The best university ever • Speeds up a chemical reaction • ___thermic reactions feel hot • ___thermic reactions feel cold • Your chemistry teacher's last name • A type of chemical reaction that creates fire • 2 (or more) reactants combine to form 1 product • 1 reactant breaks down into 2 (or more) products • ...

Activity 1 2022-05-07

Activity 1 crossword puzzle
Across
  1. ____ is between the number of moles of reactants consumed and the number of moles of a product generated in a chemical reaction.
  2. _____ refers to anything that occupies space and has mass.
  3. A greek symbol like aplha, omega, ang beta. In chemical kinetics, it means "change in".
  4. A ____ is a process of reactants being converted to products.
  5. The study of chemical rates is called _____.
  6. _____must be balanced to reflect the law of conservation of matter.
Down
  1. Chemical reactions can cause a substance turn into a new substance. This change is known as ____.
  2. The substances produced at the end of the reaction are known as the _____.
  3. _____ is a change in concentration over a time period.
  4. The substances that go into a chemical reaction are known as the _____.

10 Clues: The study of chemical rates is called _____. • _____ is a change in concentration over a time period. • _____ refers to anything that occupies space and has mass. • A ____ is a process of reactants being converted to products. • _____must be balanced to reflect the law of conservation of matter. • ...

Vocab 2025-09-25

Vocab crossword puzzle
Across
  1. no charge
  2. protons
  3. tendency
  4. change
  5. abbreviation
  6. chemical
  7. same
  8. releases
  9. negative
  10. absorbs
  11. elements
Down
  1. reactant
  2. attraction
  3. temperature
  4. molecule
  5. equal
  6. different
  7. outer
  8. basic
  9. combination
  10. biologic
  11. reaction
  12. shared
  13. substance
  14. positive
  15. result

26 Clues: same • equal • outer • basic • change • shared • result • protons • absorbs • reactant • molecule • tendency • biologic • chemical • reaction • positive • releases • negative • elements • no charge • different • substance • attraction • temperature • combination • abbreviation

Chemistry 2025-02-03

Chemistry crossword puzzle
Across
  1. stable oxide
  2. Biological cells release the energy stored in glucose for use by the cell or the body
  3. A natural process that converts a refined metal into a more
  4. A decrease in oxidation number of an atom or ion during a reaction
Down
  1. A chemical reaction that takes place between an oxidising substance and a reducing substance
  2. RIG A memory aid for remembering one definition of oxidation and reduction
  3. A chemical reaction in which a substance reacts with oxygen - the reaction is exothermic
  4. Silvery-gray metal that resembles iron
  5. An increase in oxidation number of an atom or ion during a reaction
  6. A term used to describe oxidised organic material
  7. This element has the symbol C

11 Clues: stable oxide • This element has the symbol C • Silvery-gray metal that resembles iron • A term used to describe oxidised organic material • A natural process that converts a refined metal into a more • A decrease in oxidation number of an atom or ion during a reaction • An increase in oxidation number of an atom or ion during a reaction • ...

rinas puzzle 2025-02-13

rinas puzzle crossword puzzle
Across
  1. A substance produced during a chemical reaction
  2. The process by which one or more substances
  3. during a chemical reaction
  4. A chemical reaction in which heat is absorbed
Down
  1. something that warms your hand, example of exo
  2. A chemical reaction in which heat is released
  3. A substance that takes part in and undergoes
  4. When iron rusts, example of exothermic
  5. energy The total kinetic (motion) energy of the tiny particles
  6. to produce one or more different substances

10 Clues: during a chemical reaction • When iron rusts, example of exothermic • The process by which one or more substances • to produce one or more different substances • A substance that takes part in and undergoes • A chemical reaction in which heat is released • A chemical reaction in which heat is absorbed • something that warms your hand, example of exo • ...

Britany E. Oxidation 2022-01-20

Britany E. Oxidation crossword puzzle
Across
  1. The transformation of chemical substances or species.
  2. New substance formed
  3. is an oxidation reaction.
  4. a substance that is at the beginning of a chemical reaction.
  5. a process by which the atoms loose electrons
  6. can convert stored chemical energy into electrical current.
Down
  1. is an action between elements of communication is the exchange of information
  2. is a negative electrical charge
  3. products do not change.
  4. union or connection between different things
  5. gaseous substance which atomic number is 8

11 Clues: New substance formed • products do not change. • is an oxidation reaction. • is a negative electrical charge • gaseous substance which atomic number is 8 • union or connection between different things • a process by which the atoms loose electrons • The transformation of chemical substances or species. • can convert stored chemical energy into electrical current. • ...

7 2024-08-23

7 crossword puzzle
Across
  1. Solid formed in a solution
  2. Group 18 gases
  3. Measure of disorder
  4. Releases heat
  5. Group 1 metals
  6. Number of particles in a mole
  7. Quantitative relationship in reactions
  8. Biological catalyst
  9. Horizontal row in periodic table
  10. Study of reaction rates
  11. Absorbs heat
  12. Gain of electrons
Down
  1. Study of energy changes
  2. Vertical column in periodic table
  3. Metals in the center of the table
  4. Oxidation-reduction reaction
  5. Splitting of a compound by electricity
  6. Unit of chemical amount
  7. Group 17 elements
  8. Free energy in a system
  9. Group 2 metals
  10. Table organizing elements
  11. Loss of electrons
  12. Balance in a reaction
  13. Law of heat summation

25 Clues: Absorbs heat • Releases heat • Group 18 gases • Group 1 metals • Group 2 metals • Group 17 elements • Loss of electrons • Gain of electrons • Measure of disorder • Biological catalyst • Balance in a reaction • Law of heat summation • Study of energy changes • Unit of chemical amount • Free energy in a system • Study of reaction rates • Table organizing elements • Solid formed in a solution • ...

Changing materials 2020-11-09

Changing materials crossword puzzle
Across
  1. always made in a chemical reaction(3,9)
  2. A chemical which speeds up a chemical reaction but is not used up
  3. A biological catalyst
  4. Gas which burns with a pop
  5. Does not dissolve
  6. Increases the pH of an acid towards 7
  7. alkaline substances turn pH paper this colour
Down
  1. salt formed by reacting potassium hydroxide and hydrochloric acid (9,8)
  2. The change of state from liquid to gas
  3. Acidic solution you put on your chips
  4. The change of state from solid to liquid
  5. The kind of change which does not involve the formation of a new substance
  6. Substance spread on fields to neutralise acidic soil
  7. Diluting an acid moves the pH closer to this

14 Clues: Does not dissolve • A biological catalyst • Gas which burns with a pop • Acidic solution you put on your chips • Increases the pH of an acid towards 7 • The change of state from liquid to gas • always made in a chemical reaction(3,9) • The change of state from solid to liquid • Diluting an acid moves the pH closer to this • alkaline substances turn pH paper this colour • ...

chemistry on a go 2025-04-23

chemistry on a go crossword puzzle
Across
  1. is a pure substance formed when two or more different elements are chemically combined in a fixed ratio.
  2. is the amount of matter in an object.
  3. is the force of attraction that holds atoms together in a molecule or compound
  4. is defined as a group of two or more atoms that are held together by chemical bonds
  5. is made of one atom and are shown on the periodic table.
  6. is a material composed of two or more substances that are physically combined, but not chemically bonded
  7. capacity to do work
  8. material substance that makes up the universe along with energy.
  9. Chemistry is the branch of science that deals with the properties, composition, and structure of elements and compounds, how they can change
Down
  1. is defined as a measure of the average kinetic energy of the particles
  2. is a chemical process that absorbs heat from its surroundings.
  3. is the basic building blocks of all matter made up of quarks.
  4. is defined as the transfer of thermal energy from one object to another due to a temperature difference
  5. is a process where substances, called reactants, interact and transform into new substances, called products
  6. is a chemical process that exerts heat out
  7. is a substance that participates in a chemical reaction and undergoes a change during the reaction

16 Clues: capacity to do work • is the amount of matter in an object. • is a chemical process that exerts heat out • is made of one atom and are shown on the periodic table. • is the basic building blocks of all matter made up of quarks. • is a chemical process that absorbs heat from its surroundings. • material substance that makes up the universe along with energy. • ...

Chapter 7 vocabulary 2021-12-06

Chapter 7 vocabulary crossword puzzle
Across
  1. its absorbs the heat energy.
  2. is the amount of substance in the volume
  3. thinsg that form as a reslut of the reaction accures
  4. a process that makes chemical change
  5. its absorbs the heat of the energy.
Down
  1. it lets chemists know at a glace the reactants
  2. its the amount of the energy in something
  3. Things that are there before the reaction begins
  4. its lets you know how fast a reaction is after it started
  5. things that slow down a chemical reaction

10 Clues: its absorbs the heat energy. • its absorbs the heat of the energy. • a process that makes chemical change • is the amount of substance in the volume • its the amount of the energy in something • things that slow down a chemical reaction • it lets chemists know at a glace the reactants • Things that are there before the reaction begins • ...

Chapter 7 vocabulary 2021-12-06

Chapter 7 vocabulary crossword puzzle
Across
  1. its absorbs the heat energy.
  2. is the amount of substance in the volume
  3. thinsg that form as a reslut of the reaction accures
  4. a process that makes chemical change
  5. its absorbs the heat of the energy.
Down
  1. it lets chemists know at a glace the reactants
  2. its the amount of the energy in something
  3. Things that are there before the reaction begins
  4. its lets you know how fast a reaction is after it started
  5. things that slow down a chemical reaction

10 Clues: its absorbs the heat energy. • its absorbs the heat of the energy. • a process that makes chemical change • is the amount of substance in the volume • its the amount of the energy in something • things that slow down a chemical reaction • it lets chemists know at a glace the reactants • Things that are there before the reaction begins • ...

Chapter 13 crossword - Ella Johnson 2021-12-01

Chapter 13 crossword - Ella Johnson crossword puzzle
Across
  1. This energy is also known as Bond energy
  2. when energy is absorbed or enters, what reaction is it.
  3. the amount of energy required to pull two bonded atoms apart,
  4. Combustion is a type of chemical _____
Down
  1. Not all ___ lead to products.
  2. when reaction and its reverse act at the same rate.
  3. Giving off heat represents a ____ ___
  4. Most reactions go faster at higher __
  5. The more surface area the ___ the reaction
  6. when balancing a chemical equation you balance __ at a time

10 Clues: Not all ___ lead to products. • Giving off heat represents a ____ ___ • Most reactions go faster at higher __ • Combustion is a type of chemical _____ • This energy is also known as Bond energy • The more surface area the ___ the reaction • when reaction and its reverse act at the same rate. • when energy is absorbed or enters, what reaction is it. • ...

stoichiometry 2023-01-02

stoichiometry crossword puzzle
Across
  1. type of reaction where exchange of ions between two compounds
  2. What type of reaction? CHO + 4O -> 3CO + 3HO
  3. unit for formula mass
  4. also known as gram formula mass
  5. type of reaction where two or more substances react to produce a single compound
Down
  1. can only be changed to balance a equation
  2. left of the arrow
  3. a type of reaction where bonds between atoms are formed or broken
  4. right of the arrow; after the chemical
  5. one __ is equal to 6.022 × 1023 particles

10 Clues: left of the arrow • unit for formula mass • also known as gram formula mass • right of the arrow; after the chemical • can only be changed to balance a equation • one __ is equal to 6.022 × 1023 particles • What type of reaction? CHO + 4O -> 3CO + 3HO • type of reaction where exchange of ions between two compounds • ...

Balancing Equations Vocab 2021-01-14

Balancing Equations Vocab crossword puzzle
Across
  1. The symbolic representation of a chemical reaction in the form of symbols
  2. States that mass in an isolated system is neither created nor destroyed by chemical reactions or physical transformations
  3. To make or produce
  4. When things aren't equal
Down
  1. The number located slightly below and to the side of another character in chemical formulas
  2. A substance that is present at the start of a chemical reaction
  3. To be equal
  4. The substance formed as a result of a chemical reaction
  5. The number in front of the formula, which tells us how many molecules of the formula are present

9 Clues: To be equal • To make or produce • When things aren't equal • The substance formed as a result of a chemical reaction • A substance that is present at the start of a chemical reaction • The symbolic representation of a chemical reaction in the form of symbols • The number located slightly below and to the side of another character in chemical formulas • ...

Chapter 13 Austin Pontious 2021-02-25

Chapter 13 Austin Pontious crossword puzzle
Across
  1. is a chemical that donates a hydrogenion
  2. must be moving fast enoughto overcome theenergyof activation.
  3. were once commonly usedas refrigerants
  4. reaction there is a netabsorption of energy.
  5. No atoms are gainedor lost during any reaction.
Down
  1. one or more newcompounds are formed as a result of therearrangement of atoms.
  2. reaction there is a net releaseof energy.
  3. is a substance that lowers theactivation energy of a chemical reaction
  4. is dependent on thecollisions among molecules.
  5. is the amount of energy required topull two bonded atoms apart,

10 Clues: were once commonly usedas refrigerants • is a chemical that donates a hydrogenion • reaction there is a net releaseof energy. • reaction there is a netabsorption of energy. • is dependent on thecollisions among molecules. • No atoms are gainedor lost during any reaction. • must be moving fast enoughto overcome theenergyof activation. • ...

Enzyme Vocabulary Crossword 2021-09-27

Enzyme Vocabulary Crossword crossword puzzle
Across
  1. The result at the end of the reaction
  2. What is needed to start a reaction
  3. _________ energy is the energy needed to start the reaction (enzymes lower this)
  4. Enzymes are this type of macromolecule
  5. A protein that speeds up chemical reactions by lowering activation energy
Down
  1. Maintaining a stable internal environment
  2. The substance that binds to the enzyme
  3. Speeding up a reaction
  4. The sum total of all the chemical reactions taking place within an organism
  5. When a protein unfolds (or breaks down) and is no longer functional

10 Clues: Speeding up a reaction • What is needed to start a reaction • The result at the end of the reaction • The substance that binds to the enzyme • Enzymes are this type of macromolecule • Maintaining a stable internal environment • When a protein unfolds (or breaks down) and is no longer functional • A protein that speeds up chemical reactions by lowering activation energy • ...

Hayden Smallman Ch.13 Chemical Reactions 2021-12-02

Hayden Smallman Ch.13 Chemical Reactions crossword puzzle
Across
  1. reaction is a net absorption of energy.
  2. energy is the amount of energy required to pull two bonded atoms apart.
  3. is a measure of the concentration.
  4. of a reaction dependent on the collisions among molecules.
  5. rate is how quickly the concentration of reactants.
  6. of mass conservation is No atoms are gained or lost.
Down
  1. is a chemical that donates a hydrogen ion.
  2. reaction is a net release of energy.
  3. energy is also known as Activation Energy.
  4. is a chemical that accepts a hydrogen ion.
  5. is a substance that lowers the activation energy.

11 Clues: is a measure of the concentration. • reaction is a net release of energy. • reaction is a net absorption of energy. • is a chemical that donates a hydrogen ion. • energy is also known as Activation Energy. • is a chemical that accepts a hydrogen ion. • is a substance that lowers the activation energy. • rate is how quickly the concentration of reactants. • ...

Chapter 7 vocabulary 2021-12-06

Chapter 7 vocabulary crossword puzzle
Across
  1. its absorbs the heat energy.
  2. is the amount of substance in the volume
  3. thinsg that form as a reslut of the reaction accures
  4. a process that makes chemical change
  5. its absorbs the heat of the energy.
Down
  1. it lets chemists know at a glace the reactants
  2. its the amount of the energy in something
  3. Things that are there before the reaction begins
  4. its lets you know how fast a reaction is after it started
  5. things that slow down a chemical reaction

10 Clues: its absorbs the heat energy. • its absorbs the heat of the energy. • a process that makes chemical change • is the amount of substance in the volume • its the amount of the energy in something • things that slow down a chemical reaction • it lets chemists know at a glace the reactants • Things that are there before the reaction begins • ...

Chapter 7 vocabulary 2021-12-06

Chapter 7 vocabulary crossword puzzle
Across
  1. its absorbs the heat energy.
  2. is the amount of substance in the volume
  3. thinsg that form as a reslut of the reaction accures
  4. a process that makes chemical change
  5. its absorbs the heat of the energy.
Down
  1. it lets chemists know at a glace the reactants
  2. its the amount of the energy in something
  3. Things that are there before the reaction begins
  4. its lets you know how fast a reaction is after it started
  5. things that slow down a chemical reaction

10 Clues: its absorbs the heat energy. • its absorbs the heat of the energy. • a process that makes chemical change • is the amount of substance in the volume • its the amount of the energy in something • things that slow down a chemical reaction • it lets chemists know at a glace the reactants • Things that are there before the reaction begins • ...

Chemistry Unit 6 vocab 2016-04-18

Chemistry Unit 6 vocab crossword puzzle
Across
  1. insoluble solid that form from two liquids
  2. charge of an atomic ion
  3. lose electrons
  4. an element from both compounds switch places
  5. 1 substance break into two products
  6. hydrocarbon reacts with oxygen and products are always water and carbon dioxide
Down
  1. tendency of a substance to experience a chemical reaction either by itself or with other materials
  2. a single element replace the element of the other
  3. gain electrons
  4. 2 substances combine into 1 product
  5. a chemical reaction that has one of the products as a precipitate
  6. reaction between an acid and a base producing a neutral solution
  7. a decreasing list of metals that ranked reactivity
  8. ability of a substance (solute) to dissolve in a solvent
  9. ionic equation an equation that only include the ions that react

15 Clues: gain electrons • lose electrons • charge of an atomic ion • 2 substances combine into 1 product • 1 substance break into two products • insoluble solid that form from two liquids • an element from both compounds switch places • a single element replace the element of the other • a decreasing list of metals that ranked reactivity • ...

Chemical and Physical Changes 2024-04-29

Chemical and Physical Changes crossword puzzle
Across
  1. produced by reactions of atoms
  2. when one matter changes from one to another
  3. the amount of space something occupies
  4. anything that takes up space
  5. the temperature at which a substance changes state from solid to liquid at atmospheric pressure
Down
  1. a characteristic of a particular substance that can be observed in a chemical reaction
  2. the degree of hotness or coldness
  3. a substance at the end of a chemical reaction
  4. an action performed or a feeling experienced in response to a situation or event
  5. the temperature below which a liquid turns into a solid

10 Clues: anything that takes up space • produced by reactions of atoms • the degree of hotness or coldness • the amount of space something occupies • when one matter changes from one to another • a substance at the end of a chemical reaction • the temperature below which a liquid turns into a solid • ...

Chemistry 2025-01-30

Chemistry crossword puzzle
Across
  1. The rate of a chemical reaction increases at ______ temperatures
  2. Materials made from chemical reactions
  3. The law of _____ proportions says that the compounds in an equation have a fixed ratio
  4. Chemical reactions happen in a ____ system
  5. How long it takes for reactions to happen
  6. The theory of how effective collisions happen
Down
  1. The original materials in a reaction
  2. How dense the reactants are. An increase in this increases reactions
  3. For a reaction to happen the energy must be...
  4. When there is the same number of atoms on both sides of an equation

10 Clues: The original materials in a reaction • Materials made from chemical reactions • How long it takes for reactions to happen • Chemical reactions happen in a ____ system • The theory of how effective collisions happen • For a reaction to happen the energy must be... • The rate of a chemical reaction increases at ______ temperatures • ...

Chapter 7 vocabulary 2021-12-06

Chapter 7 vocabulary crossword puzzle
Across
  1. its absorbs the heat energy.
  2. is the amount of substance in the volume
  3. thinsg that form as a reslut of the reaction accures
  4. a process that makes chemical change
  5. its absorbs the heat of the energy.
Down
  1. it lets chemists know at a glace the reactants
  2. its the amount of the energy in something
  3. Things that are there before the reaction begins
  4. its lets you know how fast a reaction is after it started
  5. things that slow down a chemical reaction

10 Clues: its absorbs the heat energy. • its absorbs the heat of the energy. • a process that makes chemical change • is the amount of substance in the volume • its the amount of the energy in something • things that slow down a chemical reaction • it lets chemists know at a glace the reactants • Things that are there before the reaction begins • ...

Its all about Heat!! 2021-02-01

Its all about Heat!! crossword puzzle
Across
  1. Unlike Conduction and convection no particles are involved
  2. How hot something is
  3. during a chemical reaction often this will change
  4. Objects can either heat up or .... down
Down
  1. The smaller the particle size the ....... the reaction
  2. Liquids and gasses transfer heat through
  3. higher the concentration of acid, the ...... the reaction.
  4. this is sometimes given off when a chemical reaction takes place
  5. how much thermal energy something has
  6. The transfer of heat energy through a material without the material moving

10 Clues: How hot something is • how much thermal energy something has • Objects can either heat up or .... down • Liquids and gasses transfer heat through • during a chemical reaction often this will change • The smaller the particle size the ....... the reaction • higher the concentration of acid, the ...... the reaction. • ...

Chemical Kinetics Crossword Puzzle 2022-07-21

Chemical Kinetics Crossword Puzzle crossword puzzle
Across
  1. Wood burning
  2. Product molecules break away
  3. Often determined by the concentration of some, all, or none of the reactants present, and determines which reaction order the reaction falls into.
  4. Material that can increase the rate of chemical reactions.
  5. theory Qualitative explanation for chemical reactions and their rates of occurrence.
Down
  1. Measurement which helps scientists understand the kinetics of a reaction
  2. Involves the use of a catalyst in a different phase from the reactants.
  3. Catalysis Same physical state as the reactants
  4. Iron rusting
  5. Speed of a reaction
  6. Relationship between the concentrations of reactants and their various reaction rates

11 Clues: Wood burning • Iron rusting • Speed of a reaction • Product molecules break away • Catalysis Same physical state as the reactants • Material that can increase the rate of chemical reactions. • Involves the use of a catalyst in a different phase from the reactants. • Measurement which helps scientists understand the kinetics of a reaction • ...

Vocabulary Crossword 2025-02-13

Vocabulary Crossword crossword puzzle
Across
  1. When an acid (pH<7) and a base (pH>7) react to produce a salt in water, with a pH of 7 (neutral).
  2. A chemically bonded cluster of atoms.
  3. A compound in aqueous solution that neutralizes a base to form a salt and water.
  4. When a positive ion gains electrons to become less positively charged, or when a neutral atom gains electrons to become a negatively charged ion.
  5. The compounds formed by a chemical reaction.
  6. A numeral written in front of a chemical formula in a chemical equation; indicates the proportions of the reactants and products in a chemical reaction.
Down
  1. When an atom loses electrons to become a positively charged ion.
  2. A compound in aqueous solution that neutralizes an acid to form a salt and water.
  3. Two or more different elements chemically bonded together.
  4. A base that contains the hydroxide ion.
  5. One of the compounds going into a chemical reaction.

11 Clues: A chemically bonded cluster of atoms. • A base that contains the hydroxide ion. • The compounds formed by a chemical reaction. • One of the compounds going into a chemical reaction. • Two or more different elements chemically bonded together. • When an atom loses electrons to become a positively charged ion. • ...

Unit III: Cell Energetics 2021-11-22

Unit III: Cell Energetics crossword puzzle
Across
  1. a form of anaerobic cellular respiration that takes place in animals
  2. the step in photosynthesis where carbon dioxide is attached to RuBp using the enzyme RuBisCo
  3. the final step to the light dependent reaction that facilitates the production of NADPH
  4. the process of anaerobic cellular respiration that takes place in prokaryotic and single celled eukaryotic cells
  5. the photoreceptive area of a chloroplast where the light dependent reaction takes place
  6. what happens when you digest food and the molecules break down in the body for use as energy
  7. reduced form of an electron transport molecule used in cellular respiration
  8. metabolic pathways that construct molecules from smaller units
  9. series of chemical reactions to release stored energy through the oxidation of acetyl-CoA from glucose
  10. a series of photosynthetic reactions that requires photons measure 680 and 700nm in wavelength
  11. a temporary molecule formed when an enzyme comes into perfect contact with its substrate.
  12. Oxygen, the element required for the continued cycling of ATP production in mitochondrion
  13. an electron transport molecule used in photosynthesis
  14. a substance that acts as a catalyst in living organisms
  15. catabolism of nutrients to carbon dioxide, water, and energy in the presence of oxygen
  16. the liquid where the Calvin Cycle takes place
Down
  1. the process for modulating the activity of a protein by the binding of a cellular signal
  2. the chemical reactions in the body's cells that change food into energy
  3. when an inhibitor binds to the enzyme at a location other than the active site
  4. the substance on which an enzyme acts
  5. a chemical reaction in which the standard change in free energy is positive
  6. interruption of a chemical pathway owing to one chemical substance inhibiting the effect of another by competing with it for binding or bonding.
  7. a chemical reaction where the change in the free energy is negative
  8. the final step of photosynthesis where G3P is created
  9. process by which organisms combine oxygen with food to make chemical energy
  10. a process that harnesses light (photon) energy and transforms it into chemical energy
  11. the site of photosynthesis
  12. an organism that produces/makes its own food
  13. a protein that used a proton motive force to create ATP them chemiosmosis
  14. cytoplasmic pathway which breaks down glucose into two three-carbon compounds
  15. the chemical breakdown of a substance by bacteria, yeasts, or other microorganisms, typically involving effervescence and the giving off of heat
  16. an organism that needs to consumer other organisms for energy
  17. a series of electron transporters embedded in the inner mitochondrial or thylakoid membrane
  18. The first step in photosynthesis where water is made into oxygen, electrons and protons
  19. the movement of ions (H+) across a semipermeable membrane bound structure
  20. the force that promotes movement of protons across membranes down a concentration gradient

36 Clues: the site of photosynthesis • the substance on which an enzyme acts • an organism that produces/makes its own food • the liquid where the Calvin Cycle takes place • the final step of photosynthesis where G3P is created • an electron transport molecule used in photosynthesis • a substance that acts as a catalyst in living organisms • ...

Thermochemistry Crossword 2015-01-15

Thermochemistry Crossword crossword puzzle
Across
  1. Energy associated with the random motion of atoms and molecules
  2. A reaction that releases thermal energy as heat flows out of the system
  3. Heat absorbed by the container is ___________
  4. the value of the ΔH for any reaction that can be written in steps equals the sum of the values of ΔH for each of the individual steps
  5. A change in the form of a substance, in which the chemical bonds are broken
  6. A device used to measure enthalpy changes for chemical and physical reactions by measuring the change in heat using a thermometer.
  7. A type of system where matter cannot leave, but energy can
  8. Energy associated with the flow of electrons
  9. A change in the chemical bonds between atoms, resulting in the rearrangement of atoms into new substances
  10. A curve that represents an experiment in which it was determined that not all particles at a specific temperature had exactly the same velocity. Also known as the Kinetic Energy Distribution Curve
  11. A type of system where matter and energy can enter or leave
  12. A specially designed container in which changes in temperature can be measured, and is reinforced to withstand large forces from rapid expansion of hot gases from chemical reactions
  13. Energy stored within the bonds of chemicals
  14. Energy available in a system or object
  15. The study of energy changes that accompany physical or chemical changes in matter
  16. A reaction that absorbs thermal energy as heat flows into the system
  17. A type of molar enthalpy change that involves a solid dissociating into ions
  18. Dilute aqueous solutions assumed to have ____ and specific heat capacity of pure water 1g/mL and 4.18J(g×°C)
  19. An equation to calculate the heat energy produced in a reaction
  20. The capacity to do work
Down
  1. The enthalpy change associated with a physical, chemical or nuclear change involving 1 mol of a substance
  2. A set of reactants and products under study, usually represented by a chemical equation
  3. Enthalpy change in a system _________ the quantity of heat (q) that flows from the system to the surroundings
  4. The measure of the transfer of the thermal energy from one substance to another
  5. Certain characteristics of a system that must be made when performing calorimetry
  6. The technological process of measuring energy changes in a chemical system
  7. Energy stored within the collection of neutrons and protons in the nucleus
  8. The difference in enthalpies of reactants and products during a change.
  9. A theory that states "In order for a chemical reaction to occur, the reacting particles (molecules and/or atoms) must collide with each other. If the particles do not collide, no reactions occur."
  10. No heat is _________ transferred between calorimter and outside
  11. A type of molar enthalpy change that involves multiple molecules bonding to form a new substance
  12. The area of chemistry that deals with rates of reactions
  13. Quantity of heat required to raise the temperature of a unit mass of a substance 1°C or 1K.
  14. A type of molar enthalpy change that involves a substance changing state from liquid to gas
  15. The measure of the average kinetic energy in a substance (measured in °C or K)
  16. Collision frequency × fraction of effective collisions
  17. A type of molar enthalpy change that involves a substance changing state from liquid to solid
  18. A type of molar enthalpy change that involves an acid and base reaction together
  19. A type of system where matter and energy cannot leave
  20. A change in the protons or neutrons in an atom, resulting in the formation of new atoms
  21. A type of molar enthalpy change that involves a substance being burned off in oxygen gas

41 Clues: The capacity to do work • Energy available in a system or object • Energy stored within the bonds of chemicals • Energy associated with the flow of electrons • Heat absorbed by the container is ___________ • A type of system where matter and energy cannot leave • Collision frequency × fraction of effective collisions • ...

ENZYMES 2020-02-21

ENZYMES crossword puzzle
Across
  1. is the site, region, of an enzyme that binds the substrate
  2. the abbreviation used for enzyme nomenclature
  3. enzymes are very _______ for their substrate
  4. enzymes have an optimal conditions for activity such as _______
  5. organic cofactors
  6. helper molecule that assist enzymes in their action
  7. the ending of enzymes
Down
  1. cofactors+coenzymes+apoenzymes
  2. is one of the mechanism used to regulate enzymes
  3. proteins that lower the energy barrier of reactions
  4. inorganic cofactors
  5. substance upon which an enzyme acts on in a chemical reaction
  6. inactive enzyme without cofactor
  7. a possible co-factors for some enzymes
  8. the ending of digestive enzymes
  9. chemical composition of enzyme
  10. synonym of speed up a biological reaction

17 Clues: organic cofactors • inorganic cofactors • the ending of enzymes • cofactors+coenzymes+apoenzymes • chemical composition of enzyme • the ending of digestive enzymes • inactive enzyme without cofactor • a possible co-factors for some enzymes • synonym of speed up a biological reaction • enzymes are very _______ for their substrate • the abbreviation used for enzyme nomenclature • ...

Enzymes 4.1.3 2024-02-07

Enzymes 4.1.3 crossword puzzle
Across
  1. The most important factor in determining specificity.
  2. A reaction that BUILDS the substrate.
  3. __________ can change the shape of an enzyme.
  4. What are enzymes made out of?
  5. An _______ pH or temperature is the pH or temperature that the enzyme performs best at.
  6. Three letters that MANY enzymes end with.
  7. The catalyst _________ the rate of the reaction.
  8. Since enzymes are made of proteins, they are technically made of ______.
  9. Protein molecules that act as biological catalysts.
  10. Enzymes are _______.
  11. A molecule that is able to bind to the enzyme and block the substrate.
  12. A reaction that BREAKS the substrate.
  13. The name of a hypothesis that helps explain enzyme function.
  14. The biological molecule that the enzyme will work on.
Down
  1. Pancreatic amylase breaks down _____.
  2. What the substrate becomes after the enzyme lets go.
  3. An enzyme can become ________ if it is exposed to extreme highs or lows of temperature or acidity.
  4. The act of taking away water in order to bind molecules.
  5. The act of adding water in order to break apart molecules.
  6. The type of activities enzymes activate.
  7. Asenzyme _________ increases, the rate of reaction increases then plateaus.
  8. The percentage of hydrogen ions in a solution.
  9. The substrate has to ____ the active site in order to form a bond.
  10. A substance that increases the rate of a chemical reaction.
  11. A specifically shaped area of the enzyme that fits around the substrate.

25 Clues: Enzymes are _______. • What are enzymes made out of? • Pancreatic amylase breaks down _____. • A reaction that BUILDS the substrate. • A reaction that BREAKS the substrate. • The type of activities enzymes activate. • Three letters that MANY enzymes end with. • __________ can change the shape of an enzyme. • The percentage of hydrogen ions in a solution. • ...

Enzymes 4.1.3 2024-02-07

Enzymes 4.1.3 crossword puzzle
Across
  1. The most important factor in determining specificity.
  2. __________ can change the shape of an enzyme.
  3. An enzyme can become ________ if it is exposed to extreme highs or lows of temperature or acidity.
  4. The act of adding water in order to break apart molecules.
  5. Enzymes are _______.
  6. Protein molecules that act as biological catalysts.
  7. Pancreatic amylase breaks down _____.
  8. An _______ pH or temperature is the pH or temperature that the enzyme performs best at.
  9. A reaction that BUILDS the substrate.
  10. What are enzymes made out of?
  11. Asenzyme _________ increases, the rate of reaction increases then plateaus.
  12. The catalyst _________ the rate of the reaction.
  13. A reaction that BREAKS the substrate.
Down
  1. A specifically shaped area of the enzyme that fits around the substrate.
  2. The type of activities enzymes activate.
  3. The act of taking away water in order to bind molecules.
  4. A molecule that is able to bind to the enzyme and block the substrate.
  5. Three letters that MANY enzymes end with.
  6. The biological molecule that the enzyme will work on.
  7. The name of a hypothesis that helps explain enzyme function.
  8. Since enzymes are made of proteins, they are technically made of ______.
  9. The substrate has to ____ the active site in order to form a bond.
  10. The percentage of hydrogen ions in a solution.
  11. What the substrate becomes after the enzyme lets go.
  12. A substance that increases the rate of a chemical reaction.

25 Clues: Enzymes are _______. • What are enzymes made out of? • Pancreatic amylase breaks down _____. • A reaction that BUILDS the substrate. • A reaction that BREAKS the substrate. • The type of activities enzymes activate. • Three letters that MANY enzymes end with. • __________ can change the shape of an enzyme. • The percentage of hydrogen ions in a solution. • ...

Matter & Energy Crossword Puzzle 2023-10-10

Matter & Energy Crossword Puzzle crossword puzzle
Across
  1. instrument used to determine if a reaction is endothermic or exothermic
  2. a reaction that absorbs heat energy and feels cold to the touch
Down
  1. a reaction that releases heat energy and feels hot to the touch.
  2. method, like temperature, to determine energy change in a reaction.
  3. shift in a chemical reaction from reactants to products.
  4. reaction in chemical ice packs, feels cold when activated
  5. rapid heat and light release, e.g., lighting a candle.
  6. type of change where the substance that it is does change.
  7. energy that is transferred as a result of temperature difference.
  8. type of change where the substance's physical properties change, but not its composition.

10 Clues: rapid heat and light release, e.g., lighting a candle. • shift in a chemical reaction from reactants to products. • reaction in chemical ice packs, feels cold when activated • type of change where the substance that it is does change. • a reaction that absorbs heat energy and feels cold to the touch • ...

Science 2021-11-11

Science crossword puzzle
Across
  1. ____or fire
  2. physical properties can be observed or______ without changing the substance
  3. when a reactions happens
  4. how an object is formed
  5. how big something is
  6. how something feels
  7. When a new subtance isnt made a ______ is formed
  8. how flamble something is
Down
  1. the chemical formula has to be ______ in order to see these properties
  2. The smell of physical properties
  3. 2nd example of physical properties
  4. when a chemical reaction forms new ______
  5. Does not create a new _____
  6. state of ____
  7. 4th example of chemical properties
  8. how toxic something is in chemical properties
  9. unexpected ______ change (Tempurture or light)

17 Clues: ____or fire • state of ____ • how something feels • how big something is • how an object is formed • when a reactions happens • how flamble something is • Does not create a new _____ • The smell of physical properties • 2nd example of physical properties • 4th example of chemical properties • when a chemical reaction forms new ______ • how toxic something is in chemical properties • ...

Balancing Equations Vocab 2021-12-10

Balancing Equations Vocab crossword puzzle
Across
  1. equation: shows no mass damaged
  2. cant be changed in equation
  3. makes up everything
  4. of mass: mass only changes form
  5. can be changed in equation
Down
  1. equation: rarely happens
  2. basic unit of matter
  3. after a chemical reaction
  4. before a chemical reaction
  5. did fruit experiment

10 Clues: makes up everything • basic unit of matter • did fruit experiment • equation: rarely happens • after a chemical reaction • before a chemical reaction • can be changed in equation • cant be changed in equation • equation: shows no mass damaged • of mass: mass only changes form

Chemistry Chapter 9 2022-04-25

Chemistry Chapter 9 crossword puzzle
Across
  1. products ____ forming when one reactant runs out
  2. abbreviation for moles
  3. propane
  4. other reactions that consume one or more of the reactants or products
  5. stoichiometric quantities are used so to both reactants “____ ____” at the same time
  6. the reactant that is completely used up when a reaction is run to completion
  7. Hydrofluoric Acid
  8. the ______ of product calculated is the theoretical yield of that product
  9. mixture that contains the relative amounts of reactants that matches the numbers in the balanced equation
  10. when chemicals are mixed together so that they can undergo a reaction, they are often mixed in stoichiometric __________
  11. the amount of ________ is controlled by the limiting reactant
  12. The actual yield of a product as a percentage of the theoretical yield
  13. chemists say that the ________ equation for a chemical reaction describes the stoichiometry of the reaction
Down
  1. the ratio of moles of one substance to moles of another substance in a balanced chemical equation
  2. balanced equation can be multiplied by ____ ________ and you’d still have a balanced equation
  3. it is important to recognize that the coefficients in a balanced equation give the ________ number of molecules
  4. the process of using a chemical reaction equation to determine the relative amounts of reactants and products involved in a reaction
  5. _____________ Notation
  6. in chemistry, you cannot count molecules directly; instead we count by ________
  7. Big number used before each compound to balance equation
  8. we have to look for the ________ that is limiting to determine how much product can be formed
  9. use the _________ integers that satisfies a balanced equation
  10. the mass in grams of one mole of a compound
  11. The maximum amount of a given product that can be formed when the limiting reactant is completely consumed
  12. the amount of product actually obtained
  13. you must count by weighing, so you have to find the ________ reactant given the masses of the reactants
  14. you can use an ________ to predict the moles of products that a given number of moles of reactants will yield

27 Clues: propane • Hydrofluoric Acid • abbreviation for moles • _____________ Notation • the amount of product actually obtained • the mass in grams of one mole of a compound • products ____ forming when one reactant runs out • Big number used before each compound to balance equation • use the _________ integers that satisfies a balanced equation • ...

Fallon Foley 2017-05-22

Fallon Foley crossword puzzle
Across
  1. During roasting, heating causes the molecules to speed up and move farther apart so they...
  2. coffee can be blamed for
  3. How many years have coffee drinkers been around
  4. light colored coffee is
  5. Coffee can be blamed for high
  6. Too much coffee can keep you
  7. Coffee shouldn't be made with boiling water because boiling water drives off too many of these
  8. What chemical reaction occurs during roasting
  9. Where does half the worlds coffee come from
Down
  1. Moderate amounts of coffee can decrease
  2. dark colored coffee is
  3. The bitterness in coffee is due to the presence of
  4. Foam is an example of a colloid which is a heterogeneous mixture composed of one ______ to another
  5. What is a chemical reaction that occurs
  6. where does coffee come from
  7. Coffee can be blamed for
  8. The average coffee beans contain___ types of acids
  9. What's the browning of the bean chemical change called
  10. coffee beans are
  11. What are coffee beans removed from

20 Clues: coffee beans are • dark colored coffee is • light colored coffee is • coffee can be blamed for • Coffee can be blamed for • where does coffee come from • Too much coffee can keep you • Coffee can be blamed for high • What are coffee beans removed from • Moderate amounts of coffee can decrease • What is a chemical reaction that occurs • Where does half the worlds coffee come from • ...

stoichiometry 2025-10-24

stoichiometry crossword puzzle
Across
  1. max amount of a substance that can be made
  2. first to conduct carefully controlled experiments
  3. how much left of a reactant after reaction
  4. created atomic theory
  5. substances that are used at start of reaction
  6. equation that goes from a mole to another mole
  7. reaction between substances that changes chemicals
  8. turning a substance into another
  9. the reactant that limits the others
  10. the result of reaction
Down
  1. atoms are never created or destroyed
  2. number to the right of a substance
  3. equation that goes from particles to mass
  4. conversion of amount of a substance to another
  5. how accurate the actual yield was
  6. equation with same amount of substances on both sides
  7. number to the left of a substance
  8. a substance
  9. equation that goes from mass to mass
  10. max amount that actually was made

20 Clues: a substance • created atomic theory • the result of reaction • turning a substance into another • how accurate the actual yield was • number to the left of a substance • max amount that actually was made • number to the right of a substance • the reactant that limits the others • atoms are never created or destroyed • equation that goes from mass to mass • ...

science cross word puzzle 2021-11-16

science cross word puzzle crossword puzzle
Across
  1. change changes affecting the form of a chemical substance
  2. propertie a property (as color, hardness, boiling point) of matter not involving in its manifestation a chemical change
  3. changes a usually irreversible chemical reaction involving the rearrangement of the atoms of one or more substances
  4. is defined as a state of matter consisting of particles that have neither a defined volume nor defined shape
  5. is a material made up of two or more different chemical substance/substances which are not chemically combined
  6. a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction
  7. any substance composed of identical molecules consisting of atoms of two or more chemical elements
  8. material substance that constitutes the observable universe
Down
  1. changing into a gas when energy is added
  2. any substance that cannot be decomposed into simpler substances by ordinary chemical processes
  3. substance a sample of matter with both definite and constant composition and distinct chemical properties
  4. is one of the states of matter
  5. properties a particular substance that can be observed in a chemical reaction
  6. smallest unit into which matter can be divided without the release of electrically charged particles
  7. one of the three basic states of matter, the others being liquid and gas

15 Clues: is one of the states of matter • changing into a gas when energy is added • change changes affecting the form of a chemical substance • material substance that constitutes the observable universe • one of the three basic states of matter, the others being liquid and gas • properties a particular substance that can be observed in a chemical reaction • ...

Chapter 13. Maddy Adamczewski 2021-03-04

Chapter 13. Maddy Adamczewski crossword puzzle
Across
  1. the weakest bond
  2. when the equation is not equal
  3. the strongest bond
  4. a chemical that accepts a hydrogen ion, H+.
  5. not the weakest but not the strongest bond
  6. no atoms are gained or lost during any reaction
Down
  1. a chemical that donates a hydrogen ion, H+
  2. when the equation is equal
  3. is the minimum energy required to overcome the initial breaking of bonds in reactants
  4. a substance that lowers the activation energy of a chemical reaction, which allows for the reaction to proceed at a faster rate

10 Clues: the weakest bond • the strongest bond • when the equation is equal • when the equation is not equal • a chemical that donates a hydrogen ion, H+ • not the weakest but not the strongest bond • a chemical that accepts a hydrogen ion, H+. • no atoms are gained or lost during any reaction • is the minimum energy required to overcome the initial breaking of bonds in reactants • ...

Science 24 Chemistry Unit Review 2022-05-02

Science 24 Chemistry Unit Review crossword puzzle
Across
  1. Any chemical reaction that absorbs heat.
  2. Two or more substances react together.
  3. Chemicals that kill particular plants
  4. Device installed in industrial smokestacks to remove sulfur.
  5. Acid and base, salt compound and water.
  6. Any chemical reaction that releases heat.
  7. Natural earth's warming, cool intervals.
Down
  1. Chemically breaks down or degrades metal.
  2. Acid materials that are deposited on earth.
  3. Workplace Hazardous Materials Information System.
  4. Substances of molecules that are bonded together.
  5. Substance combines with oxygen to produce heat:burning.
  6. Carbon dioxide,water, methane, that trap heats on earth.
  7. Two, or more metals mixed together.
  8. Man-made substance
  9. Substances, chemicals to kill plants or animals.

16 Clues: Man-made substance • Two, or more metals mixed together. • Chemicals that kill particular plants • Two or more substances react together. • Acid and base, salt compound and water. • Any chemical reaction that absorbs heat. • Natural earth's warming, cool intervals. • Chemically breaks down or degrades metal. • Any chemical reaction that releases heat. • ...

Biology 2023-08-30

Biology crossword puzzle
Across
  1. It provides the reducing power that drives numerous anabolic reactions,light
  2. a naturally occurring nucleoside which is present in various forms in all cells of the bodyphotosynthesis
  3. an organism that is able to form nutritional organic substances from simple inorganic substances such as carbon dioxide.
  4. each of a number of flattened sacs inside a chloroplast, bounded by pigmented membranes on which the light reactions of photosynthesis take place, and arranged in stacks or granastroma
  5. In chemical thermodynamics, an endergonic reaction is a chemical reaction in which the standard change in free energy is positive, and an additional driving force is needed to perform this reaction.
Down
  1. a chemical element with an atomic number of 8 (it has eight protons in its nucleus).
  2. a natural substance that produces color in animals and plants, such as of skin, hair, and leaveschlorophyll,
  3. an oxide containing two atoms of oxygen in its molecule or empirical formula.glucose
  4. Water is an inorganic compound with the chemical formula H₂O. It is a transparent, tasteless, odorless, and nearly colorless chemical substance,carbon
  5. A chemical reaction is a process that leads to the chemical transformation of one set of chemical substances to anotherCalvincycle

10 Clues: It provides the reducing power that drives numerous anabolic reactions,light • a chemical element with an atomic number of 8 (it has eight protons in its nucleus). • an oxide containing two atoms of oxygen in its molecule or empirical formula.glucose • a naturally occurring nucleoside which is present in various forms in all cells of the bodyphotosynthesis • ...

Olivia Bonaminio Chapter 13 Crossword 2021-12-02

Olivia Bonaminio Chapter 13 Crossword crossword puzzle
Across
  1. what measures the concentration of hydrogen atoms in a substance
  2. type of reaction that involves oxygen
  3. when a reaction and its reverse act at the same time
  4. water would not be considered basic or acidic, it would be considered
  5. this can be added to something to increase the reaction speed so less activation energy is needed
Down
  1. by adding a catalyst to a reaction, less of this is needed
  2. what type of reaction has an absorption of energy
  3. what type of reaction has a releasing of energy
  4. what is a chemical that donates a hydrogen ion
  5. what is a chemical that accepts a hydrogen ion

10 Clues: type of reaction that involves oxygen • what is a chemical that donates a hydrogen ion • what is a chemical that accepts a hydrogen ion • what type of reaction has a releasing of energy • what type of reaction has an absorption of energy • when a reaction and its reverse act at the same time • by adding a catalyst to a reaction, less of this is needed • ...

Chemical Changes 2022-03-18

Chemical Changes crossword puzzle
Across
  1. a system in which no matter is allowed to enter or leave
  2. a material that releases energy when it burns
  3. a biological catalyst that lowers the activation energy of reactions in cells
  4. the minimum of energy needed to get a chemical reaction started
  5. a rapid reaction between oxygen and fuel that results in the fire
  6. the amount of one material in a certain volume
Down
  1. a material that increases the rate of a reaction by lowering the activation energy
  2. a reaction that releases energy in the form of heat
  3. a material that decreases that rate of a reaction
  4. a substance that enters into a chemical reaction

10 Clues: a material that releases energy when it burns • the amount of one material in a certain volume • a substance that enters into a chemical reaction • a material that decreases that rate of a reaction • a reaction that releases energy in the form of heat • a system in which no matter is allowed to enter or leave • ...

Photosynthesis Crossword - Stanfield 2019-12-09

Photosynthesis Crossword - Stanfield crossword puzzle
Across
  1. Simple chemical and simple alcohol
  2. simple sugar
  3. the chemical breakdown of a substance by bacteria, yeasts, or other microorganisms
  4. an energy source
  5. O2
  6. where photosynthesis occurs
  7. flat pancake like sacs
  8. Cluster of protiens that transfer through the mitochondria to make ATP
  9. an organic acid
  10. a linked series of chemical reactions occurring within a cell.
  11. H2O
  12. convert the energy in food into ATP to be used as chemical energy by the cell.
Down
  1. a series of chemical reactions used by all aerobic organisms
  2. the chemical reactions that convert carbon dioxide and other compounds into glucose.
  3. use of light energy to make NADPH and ATP
  4. CO2
  5. Not requiring oxygen
  6. enzymes breakdown glucose
  7. stack of the pancake like sacs
  8. plants perform this to create glucose
  9. Taking in one atom and producing releasing another.
  10. requiring oxygen

22 Clues: O2 • CO2 • H2O • simple sugar • an organic acid • an energy source • requiring oxygen • Not requiring oxygen • flat pancake like sacs • enzymes breakdown glucose • where photosynthesis occurs • stack of the pancake like sacs • Simple chemical and simple alcohol • plants perform this to create glucose • use of light energy to make NADPH and ATP • ...

Chapter 13 Crossword - Brooklyn McCracken 2019-10-08

Chapter 13 Crossword - Brooklyn McCracken crossword puzzle
Across
  1. On the scale 1-10 what is above 7?
  2. the same as bond energy
  3. On a scale of 1-10 what is under 7?
  4. In an endothermic reaction there is a net absorption energy
  5. A + B-C → A-C + B.
Down
  1. Activation energy, Ea, is the minimum energy required to overcome the initial breaking of bonds in reactants. a substance that lowers the
  2. type of chemical reaction where two compounds react, and the positive ions (cation) and the negative ions (anion) of the two reactants switch places
  3. activation energy of a chemical reaction, which allows for the reaction to proceed at a faster rate
  4. During a chemical reaction, one or more new compounds are formed as a result of the rearrangement of atoms
  5. On a scale of 1-10 what is 7?

10 Clues: A + B-C → A-C + B. • the same as bond energy • On a scale of 1-10 what is 7? • On the scale 1-10 what is above 7? • On a scale of 1-10 what is under 7? • In an endothermic reaction there is a net absorption energy • activation energy of a chemical reaction, which allows for the reaction to proceed at a faster rate • ...

Science 2024-07-12

Science crossword puzzle
Across
  1. The smallest unit everything is made of
  2. Study of living things
  3. chemical reaction that releases energy from glucose and oxygen
  4. A glowing split will relight in this gas
  5. Site of Respiration
  6. the flame used to light a Bunsen burner
  7. green pigment in plants
  8. _____- store of energy meaning moving
Down
  1. Head of science
  2. Cell ________. Allows substances to move in and out of cells
  3. Number of piece of safety equipment
  4. =distance/time
  5. Chemical reaction using light, glucose and carbon dioxide,
  6. ________ water, used to test for carbon dioxide
  7. The mat placed on the bench under a Bunsen burner

15 Clues: =distance/time • Head of science • Site of Respiration • Study of living things • green pigment in plants • Number of piece of safety equipment • _____- store of energy meaning moving • The smallest unit everything is made of • the flame used to light a Bunsen burner • A glowing split will relight in this gas • ________ water, used to test for carbon dioxide • ...

Josie Blanchard Chapter 13 2020-03-01

Josie Blanchard Chapter 13 crossword puzzle
Across
  1. if changed, the equilibrium shifts to oppose change, until new equilibrium is reached
  2. reaction where there is a net release of energy
  3. chemical that accepts a hydrogen ion
Down
  1. also known as bond energy
  2. how quickly the concentration of reactants decreases and the concentration of products increases
  3. no atoms are gained or lost during any reaction
  4. chemical that donates a hydrogen ion
  5. when reactions and their reverse act at the same rate
  6. reaction where there is a net absorption of energy
  7. things that change the rate of chemical reactions

10 Clues: also known as bond energy • chemical that donates a hydrogen ion • chemical that accepts a hydrogen ion • no atoms are gained or lost during any reaction • reaction where there is a net release of energy • things that change the rate of chemical reactions • reaction where there is a net absorption of energy • when reactions and their reverse act at the same rate • ...

Chapter 13 Crossword Mason Emmitt 2020-10-05

Chapter 13 Crossword Mason Emmitt crossword puzzle
Across
  1. there is a net absorption of energy.
  2. a chemical that donates a hydrogen ion
  3. Also known as bond energy.
  4. if changed, the equilibrium shifts to oppose change, until new equilibrium is reached.
  5. a net release of energy.
Down
  1. No atoms are gained or lost during any reaction.
  2. one or more new compounds are formed as a result of the rearrangement of atoms.
  3. when reaction and it’s reverse act at the same rate.
  4. a chemical that accepts a hydrogen ion
  5. a substance that lowers the activation energy of a chemical reaction.

10 Clues: a net release of energy. • Also known as bond energy. • there is a net absorption of energy. • a chemical that donates a hydrogen ion • a chemical that accepts a hydrogen ion • No atoms are gained or lost during any reaction. • when reaction and it’s reverse act at the same rate. • a substance that lowers the activation energy of a chemical reaction. • ...

Rebekah Van Wormer chapter 13 2021-03-01

Rebekah Van Wormer chapter 13 crossword puzzle
Across
  1. bond energy is also known as this
  2. In this reaction there is a net absorption of energy
  3. This can be a base or an acid
  4. This doesn´t ionize completely in water
  5. This dose ionize completely in water
Down
  1. In this reaction there is a net release of energy
  2. is a chemical that accepts a hydrogen ion
  3. is a substance that lowers the activation energy of a chemical energy
  4. is a chemical that donates a hydrogen ion
  5. is when a reaction and its reverse act at the same rate

10 Clues: This can be a base or an acid • bond energy is also known as this • This dose ionize completely in water • This doesn´t ionize completely in water • is a chemical that accepts a hydrogen ion • is a chemical that donates a hydrogen ion • In this reaction there is a net release of energy • In this reaction there is a net absorption of energy • ...

Science crossword 2014-11-06

Science crossword crossword puzzle
Across
  1. a table in which all elements are found
  2. a system in which the products cannot escape
  3. a pure substance that is formed from at least one metal and one non-metal
  4. a reaction the absorbs heat [energy]
  5. chemicals that when combined create products
  6. chemical reaction in cells
  7. a chemical reaction that occurs with oxygen that releases energy
  8. a slow reaction with oxygen and metal react together
  9. change in state, solid to liquid.
  10. the change in state from solid to gas and gas to solid.
Down
  1. the mass of a single atom of an element
  2. a pure substance that cannot be broken down
  3. properties that describes appearance and composition
  4. a reaction that releases heat[energy]
  5. a system used around the world to ensure safety in a workplace
  6. anything that has a mass and occupies a space.
  7. the result of two or more reactants combining
  8. an invisible part of an atom that has a negative charge.
  9. a compound made from two or more non-metals
  10. when two or more substances come together to create a new substance
  11. a law that states that matter can not be destroyed or created
  12. change in appearance or state that does not effect the composition
  13. the number of electron/protons in an single atom of a element
  14. the positively charged part in the nucleus.
  15. an atom that becomes negatively or positively charged through the loss or gain of electrons

25 Clues: chemical reaction in cells • change in state, solid to liquid. • a reaction the absorbs heat [energy] • a reaction that releases heat[energy] • the mass of a single atom of an element • a table in which all elements are found • a compound made from two or more non-metals • the positively charged part in the nucleus. • a pure substance that cannot be broken down • ...

Enzymes 4.1.3 2024-02-07

Enzymes 4.1.3 crossword puzzle
Across
  1. What are enzymes made out of?
  2. A molecule that is able to bind to the enzyme and block the substrate.
  3. A specifically shaped area of the enzyme that fits around the substrate.
  4. The type of activities enzymes activate.
  5. The percentage of hydrogen ions in a solution.
  6. Pancreatic amylase breaks down _____.
  7. The most important factor in determining specificity.
  8. A substance that increases the rate of a chemical reaction.
  9. The name of a hypothesis that helps explain enzyme function.
  10. The biological molecule that the enzyme will work on.
  11. An enzyme can become ________ if it is exposed to extreme highs or lows of temperature or acidity.
  12. What the substrate becomes after the enzyme lets go.
Down
  1. Enzymes are _______.
  2. The catalyst _________ the rate of the reaction.
  3. An _______ pH or temperature is the pH or temperature that the enzyme performs best at.
  4. The act of taking away water in order to bind molecules.
  5. __________ can change the shape of an enzyme.
  6. A reaction that BREAKS the substrate.
  7. Since enzymes are made of proteins, they are technically made of ______.
  8. A reaction that BUILDS the substrate.
  9. As enzyme _________, the rate of reaction increases then plateaus.
  10. Protein molecules that act as biological catalysts.
  11. The act of adding water in order to break apart molecules.
  12. The substrate has to ____ the active site in order to form a bond.
  13. Three letters that MANY enzymes end with.

25 Clues: Enzymes are _______. • What are enzymes made out of? • A reaction that BREAKS the substrate. • A reaction that BUILDS the substrate. • Pancreatic amylase breaks down _____. • The type of activities enzymes activate. • Three letters that MANY enzymes end with. • __________ can change the shape of an enzyme. • The percentage of hydrogen ions in a solution. • ...

Enzymes 4.1.3 2024-02-07

Enzymes 4.1.3 crossword puzzle
Across
  1. A reaction that BUILDS the substrate.
  2. The most important factor in determining specificity.
  3. The act of adding water in order to break apart molecules.
  4. The percentage of hydrogen ions in a solution.
  5. Pancreatic amylase breaks down _____.
  6. Three letters that MANY enzymes end with.
  7. A molecule that is able to bind to the enzyme and block the substrate.
  8. The substrate has to ____ the active site in order to form a bond.
  9. An enzyme can become ________ if it is exposed to extreme highs or lows of temperature or acidity.
  10. As enzyme _________ increases, the rate of reaction increases then plateaus.
  11. A substance that increases the rate of a chemical reaction.
  12. A reaction that BREAKS the substrate.
Down
  1. A specifically shaped area of the enzyme that fits around the substrate.
  2. Since enzymes are made of proteins, they are technically made of ______.
  3. The act of taking away water in order to bind molecules.
  4. What are enzymes made out of?
  5. An _______ pH or temperature is the pH or temperature that the enzyme performs best at.
  6. The catalyst _________ the rate of the reaction.
  7. What the substrate becomes after the enzyme lets go.
  8. Protein molecules that act as biological catalysts.
  9. The biological molecule that the enzyme will work on.
  10. Enzymes are _______.
  11. The type of activities enzymes activate.
  12. The name of a hypothesis that helps explain enzyme function.
  13. __________ can change the shape of an enzyme.

25 Clues: Enzymes are _______. • What are enzymes made out of? • A reaction that BUILDS the substrate. • Pancreatic amylase breaks down _____. • A reaction that BREAKS the substrate. • The type of activities enzymes activate. • Three letters that MANY enzymes end with. • __________ can change the shape of an enzyme. • The percentage of hydrogen ions in a solution. • ...

Science Crossword 2023-11-16

Science Crossword crossword puzzle
Across
  1. The sharing of one pair of electrons
  2. Thermal energy in the transfer of one body of matter to another
  3. The clinging of one substance to another
  4. The energy of motion cel
  5. A positively charged ion
  6. Two atomic forms of an element that differ in the number of neutrons
  7. Measure of how hard it is to break the surface of liquid
  8. The final molecules of a chemical reaction
  9. The sharing of a pair of valence electrons by two atoms
  10. Why molecules stay close together
Down
  1. The sharing of one pair of electrons
  2. The amount of heat required to raise the temperature of 1 g of water by 1 degree Celius
  3. The making and breaking of chemical bonds
  4. An attraction between an anion and a cation
  5. A negatively charged ion
  6. An atom's attraction for the electrons of a covalent bond
  7. Measure of the total amount of kinetic energy due to molecular motion
  8. Has the capacity to cause change
  9. The dissolving agent of a solution
  10. The starting molecules of a chemical reaction

20 Clues: A negatively charged ion • The energy of motion cel • A positively charged ion • Has the capacity to cause change • Why molecules stay close together • The dissolving agent of a solution • The sharing of one pair of electrons • The sharing of one pair of electrons • The clinging of one substance to another • The making and breaking of chemical bonds • ...

Photosynthesis Crossword Puzzle 2025-11-14

Photosynthesis Crossword Puzzle crossword puzzle
Across
  1. this gas is a product
  2. something that absorbs and reflects light (colors)
  3. the name for something that goes into a chemical reaction
  4. the name for something that comes out of a chemical reaction
  5. the main pigment responsible for photosynthesis
  6. the process of converting light energy into chemical energy
  7. this is where the carbon needed for photosynthesis comes from
  8. this carbohydrate is the main product
  9. this gas is a reactant
Down
  1. this law states that matter cannot be created or destroyed, but only changed and rearranged
  2. organism that must eat (consume) something else to get energy
  3. these structures are responsible for absorbing water from soil
  4. another word for "reactant"
  5. an organism that absorbs more carbon dioxide that it releases
  6. this type of energy is required for photosynthesis
  7. these organs hold chloroplasts and are responsible for most photosynthesis in the plant
  8. this liquid is a reactant
  9. plants and algae release this gas as a product
  10. organism that can make their own food
  11. another word for "product"

20 Clues: this gas is a product • this gas is a reactant • this liquid is a reactant • another word for "product" • another word for "reactant" • organism that can make their own food • this carbohydrate is the main product • plants and algae release this gas as a product • the main pigment responsible for photosynthesis • something that absorbs and reflects light (colors) • ...

G5A Science Final Review - Spring 2025 2025-06-03

G5A Science Final Review - Spring 2025 crossword puzzle
Across
  1. The starting ingredients in a chemical reaction.
  2. How many bases taste.
  3. A force that slows things down when they rub together.
  4. Bases release these special particles in water(OH-).
  5. When a reaction makes bubbles or a new smell.
  6. A flat, sloping surface, like a ramp.
  7. Acids release these special particles in water (H+).
  8. Forces that are not equal, causing an object to change its motion.
  9. The new things made in a chemical reaction.
  10. Forces that are equal and opposite, so an object keeps its current motion.
  11. The force of gravity pulling an object down.
  12. A solid that forms from a liquid in a chemical reaction.
  13. The force that pushes an airplane or rocket forward.
  14. A sign of a chemical reaction when something looks different, like what bleach can do to clothing.
  15. A simple machine like a doorknob or a car tire.
  16. A gas made when some acids react with metals.
  17. When an acid and a base mix to make water and a salt.
  18. A wheel with a rope used for lifting things.
  19. When a metal like silver slowly gets dull or dark.
  20. How bases often feel to the touch.
  21. When a reaction gives off heat or light.
  22. Formed when H+ ions mix with water.
  23. When you push something, that's the ______ force.
Down
  1. Changes that make a brand new substance, like rust.
  2. The force that pushes back when you apply an action force.
  3. A simple machine like a seesaw or a crowbar.
  4. Substances that can carry electricity when dissolved in water.
  5. The rule that says energy cannot be made or lost, only changed.
  6. An inclined plane wrapped around a cylinder, used to hold things.
  7. The rule that says matter isn't made or lost in a reaction.
  8. Energy that is stored and ready to be used.
  9. These often feel soapy and taste bitter.
  10. These taste sour and can turn litmus paper red.
  11. The force that pushes back against something moving through air.
  12. Bases turn red litmus paper this color.
  13. Changes like melting or freezing; no new stuff is made.
  14. Done when a force makes an object move a distance.
  15. The upward force that helps an airplane fly.
  16. Energy an object has because it is moving.
  17. Acids turn blue litmus paper this color.
  18. A simple machine used to split things, like an axe.
  19. How acids like lemon juice taste.
  20. The unit used to measure force (N).
  21. A push or a pull.
  22. The unit used to measure work or energy (J).

45 Clues: A push or a pull. • How many bases taste. • How acids like lemon juice taste. • How bases often feel to the touch. • The unit used to measure force (N). • Formed when H+ ions mix with water. • A flat, sloping surface, like a ramp. • Bases turn red litmus paper this color. • These often feel soapy and taste bitter. • Acids turn blue litmus paper this color. • ...

Crossword Puzzle 2025-10-08

Crossword Puzzle crossword puzzle
Across
  1. When a new substance is formed
  2. of gas bubbles
  3. When substances change color from a reaction
  4. Chemical reaction changing the shape of something, like liquid
  5. The temperature changing because of a chemical reaction
Down
  1. the release of heat
  2. the absorption of heat
  3. changes in the exterior only

8 Clues: of gas bubbles • the release of heat • the absorption of heat • changes in the exterior only • When a new substance is formed • When substances change color from a reaction • The temperature changing because of a chemical reaction • Chemical reaction changing the shape of something, like liquid

Science Vocab 2023-12-07

Science Vocab crossword puzzle
Across
  1. The substances which participate in a chemical reaction
  2. he processes by which chemicals interact to form new chemicals with different compositions
  3. measure of a fluid's resistance to flow
  4. what level a substance dissolves in a solvent
  5. it dissolves in certain chemicals
  6. A substance that cannot be broken down into simpler substances by chemical means
Down
  1. a substance that is present at the finish of a chemical reaction
  2. how quickly a specific material is capable of catching fire and burning
  3. how dense an object is
  4. a compound made up of two or more chemical components that are not chemically linked
  5. it doesn't dissolve
  6. when a substance is broken down by another
  7. when matter changes to from one state to another

13 Clues: it doesn't dissolve • how dense an object is • it dissolves in certain chemicals • measure of a fluid's resistance to flow • when a substance is broken down by another • what level a substance dissolves in a solvent • when matter changes to from one state to another • The substances which participate in a chemical reaction • ...

ChemWords 2024-05-07

ChemWords crossword puzzle
Across
  1. : A chemical reaction involving the rapid combination of a substance with oxygen, releasing heat and light.
  2. : A process of separating a mixture of liquids based on their different boiling points.
  3. : The smallest unit of an element that retains its properties.
  4. : A pure substance that cannot be broken down into simpler substances by chemical means.
Down
  1. : The minimum energy required for a chemical reaction to occur and initiate the breaking of bonds.
  2. : A substance composed of two or more different elements chemically bonded together.
  3. : A compound that releases hydrogen ions in water, with a pH less than 7.
  4. : A substance that increases the rate of a chemical reaction without being consumed.
  5. : A compound that accepts hydrogen ions in water, with a pH greater than 7.
  6. :The combining capacity of an atom, determined by the number of electrons in its outermost shell.
  7. Bond : A chemical bond formed by the sharing of electrons between atoms.

11 Clues: : The smallest unit of an element that retains its properties. • Bond : A chemical bond formed by the sharing of electrons between atoms. • : A compound that releases hydrogen ions in water, with a pH less than 7. • : A compound that accepts hydrogen ions in water, with a pH greater than 7. • ...

Matter and Energy - Chemical Equations 2015-04-14

Matter and Energy - Chemical Equations crossword puzzle
Across
  1. The atoms in a molecule are not alike
  2. A number placed in front of a chemical symbol or formula during balancing of the equation
  3. The process by which one or more substances changes to produce one or more different substances
  4. A substance that takes part in and undergoes change during a reaction, found to the left of an arrow in a chemical equation
Down
  1. Formed when atoms are chemically joined together
  2. Chemical symbols and subscript numbers put together to represent the type and number of atoms present in a particular substance
  3. A chemical reaction in which both sides of the equation contain equivalent numbers of atoms
  4. Shows the number of atoms of each element in a chemical formula
  5. All the atoms in a molecule are alike
  6. Substance produced during a chemical reaction and found to the right of an arrow in a chemical equation

10 Clues: The atoms in a molecule are not alike • All the atoms in a molecule are alike • Formed when atoms are chemically joined together • Shows the number of atoms of each element in a chemical formula • A number placed in front of a chemical symbol or formula during balancing of the equation • ...

Nuclear Reactions, Rate of Reactions & Endo/Exothermic Reactions 2023-04-26

Nuclear Reactions, Rate of Reactions & Endo/Exothermic Reactions crossword puzzle
Across
  1. Decreasing the space for the same number of particles = More Collisions & Greater Chance of a Reaction
  2. Nuclear Reactions Release ______ Energy Than Chemical Reactions
  3. Related to Heat
  4. Reactants have Less Energy than the Products, Temperature Decreases, Thermal Energy is Absorbed
  5. Each time a nucleus splits, it releases more neutrons, which can go on and cause more reactions to occur and will continue to happen.
  6. The time that it takes half the nuclei in a sample to decay
  7. Means Out
  8. How can the surface area of a solid be increased
  9. Means In
  10. Any reaction involving a solid takes place where
Down
  1. Lowers the Activation Energy
  2. How can Radioactivity be detected
  3. The splitting of a nucleus into smaller nuclei and the release of energy
  4. Increasing Contact Points = More Collisions & Greater Chance of a Reaction
  5. More Particles in the Same Space = More Collisions & Greater Chance of a Reaction
  6. Two smaller nuclei created when a nucleus splits
  7. Occurs when a stable isotope is struck by a neutron
  8. Reactants have More Energy than the Product, Temperature Increases, Thermal Energy is Released
  9. Increasing Energy = Particles move Faster = More Collisions & Greater Chance of a Reaction
  10. An example of an Endothermic Reaction
  11. Process Happens in the Sun’s Core
  12. An example of an Exothermic Reaction
  13. Smaller nuclei join together to form larger nuclei and energy is released

23 Clues: Means In • Means Out • Related to Heat • Lowers the Activation Energy • How can Radioactivity be detected • Process Happens in the Sun’s Core • An example of an Exothermic Reaction • An example of an Endothermic Reaction • Two smaller nuclei created when a nucleus splits • How can the surface area of a solid be increased • Any reaction involving a solid takes place where • ...

Carbohydrates - Schmole 2022-10-25

Carbohydrates - Schmole crossword puzzle
Across
  1. food storage of animals
  2. the basic unit of carbohydrates
  3. cell walls of plants
  4. used in place of substances such as milk fat
  5. reduces crystallization during freezing
  6. texture enhancer, thickener
  7. sugar
Down
  1. consist of two sugar molecules chemically bonded together
  2. consist of many (3 or more) sugar molecules chemically bonded together
  3. the invert chemical breakdown of a disaccharide into its two separate monosaccharides
  4. Maillard Reaction
  5. the chemical reaction between sugars and amino acids to produce color (browning) , aromas, and flavors
  6. improve palatability, flavor enhancer
  7. food storage of plants
  8. starch and fibers

15 Clues: sugar • Maillard Reaction • starch and fibers • cell walls of plants • food storage of plants • food storage of animals • texture enhancer, thickener • the basic unit of carbohydrates • improve palatability, flavor enhancer • reduces crystallization during freezing • used in place of substances such as milk fat • consist of two sugar molecules chemically bonded together • ...

Chemical Vocab 2018-02-05

Chemical Vocab crossword puzzle
Across
  1. / More than one type of atom combined
  2. / Potential to change and ability to react
  3. / Are not reactive because of their filled outside valance shell
  4. / Anything that has mass and volume
  5. / Looks like one substance
  6. / 2 or more substances that are physically combined
  7. / Groups of elements that have common characteristics
Down
  1. / no new substance is formed
  2. / the new substance that is formed in a chemical reaction
  3. / a new substance is formed
  4. / Observable and can be measured
  5. / Visibly different substances
  6. / Made of one type of atom
  7. / substance in a chemical reaction that undergoes a change
  8. / 2 or more atoms

15 Clues: / 2 or more atoms • / Made of one type of atom • / Looks like one substance • / a new substance is formed • / no new substance is formed • / Visibly different substances • / Observable and can be measured • / Anything that has mass and volume • / More than one type of atom combined • / Potential to change and ability to react • ...

Biomolcules & Enzymes 2023-09-12

Biomolcules & Enzymes crossword puzzle
Across
  1. How many components make up a nucleotide (2 words)
  2. Cellulose, Glucose, Starch, Glycogen
  3. speeds up a chemical reaction
  4. Is what is produced from a chemical reaction with an enzyme and substrate
  5. enzymes are very ________ ?
Down
  1. Which Biomolecule stores genetic information? (two words)
  2. True or False An enzyme is specialized and reusable
  3. when the enzyme and substrate have combined it forms a what? (3 words)
  4. can denature an enzyme (3 words)
  5. Enzymes, Insulin, and hemoglobin
  6. Multiple monomers joined together
  7. What the substrate binds to (2 words)
  8. How many biomolecules are there?
  9. Single building block, one molecule
  10. Phospholipid, Steroids

15 Clues: Phospholipid, Steroids • enzymes are very ________ ? • speeds up a chemical reaction • can denature an enzyme (3 words) • Enzymes, Insulin, and hemoglobin • How many biomolecules are there? • Multiple monomers joined together • Single building block, one molecule • Cellulose, Glucose, Starch, Glycogen • What the substrate binds to (2 words) • ...

Matter & Energy 2023-09-21

Matter & Energy crossword puzzle
Across
  1. Where chemical energy is stored in molceules
  2. Fuel molecules react with these molecules
  3. A molecule made of only Hydrogen & Carbon atoms
  4. Which molecule is CO2
  5. When burned, wood matter changes into
  6. Which molecule is C2H5OH
  7. Anything that will react with oxygen and burn
  8. Ethanol has this but water does not
Down
  1. A water molecule has two of these
  2. ______ energy is movement energy
  3. The molecules produced in a chemical reaction
  4. Another word for "burning"
  5. The smallest unit of matter
  6. The molecules you need for a reaction to occur
  7. Gold, silver, and Oxygen are all types of?

15 Clues: Which molecule is CO2 • Which molecule is C2H5OH • Another word for "burning" • The smallest unit of matter • ______ energy is movement energy • A water molecule has two of these • Ethanol has this but water does not • When burned, wood matter changes into • Fuel molecules react with these molecules • Gold, silver, and Oxygen are all types of? • ...

7 2025-02-22

7 crossword puzzle
Across
  1. Solid formed in a solution
  2. Group 18 gases
  3. Measure of disorder
  4. Releases heat
  5. Group 1 metals
  6. Number of particles in a mole
  7. Quantitative relationship in reactions
  8. Biological catalyst
  9. Horizontal row in periodic table
  10. Study of reaction rates
  11. Absorbs heat
  12. Gain of electrons
Down
  1. Study of energy changes
  2. Vertical column in periodic table
  3. Metals in the center of the table
  4. Oxidation-reduction reaction
  5. Splitting of a compound by electricity
  6. Unit of chemical amount
  7. Group 17 elements
  8. Free energy in a system
  9. Group 2 metals
  10. Table organizing elements
  11. Loss of electrons
  12. Balance in a reaction
  13. Law of heat summation

25 Clues: Absorbs heat • Releases heat • Group 18 gases • Group 1 metals • Group 2 metals • Group 17 elements • Loss of electrons • Gain of electrons • Measure of disorder • Biological catalyst • Balance in a reaction • Law of heat summation • Study of energy changes • Unit of chemical amount • Free energy in a system • Study of reaction rates • Table organizing elements • Solid formed in a solution • ...

7.1 Chemical Reactions and Matter 2025-08-23

7.1 Chemical Reactions and Matter crossword puzzle
Across
  1. When a solid dissolves in a liquid, the solid breaks apart into particles too small to see and it mixes completely in the liquid.
  2. Change A change from one state (solid, liquid, or gas) to another without a change in chemical composition.
  3. A chemical substance that is present at the start of a chemical reaction.
  4. The process by which one or more substances change to produce one or more different substances.
  5. Describes a material that does not dissolve in something else.
  6. A characteristic of a substance that does not change.
  7. Describes a material that can dissolve in a particular substance.
  8. A blend of two or more substances, each of which retains its chemical identity.
Down
  1. A material's ability to burn in the presence of oxygen.
  2. Made of one type of material throughout.
  3. Mass per unit volume.
  4. This is the best class in Piper Middle School
  5. Smallest particle of an element.
  6. of Matter A physical property that describes matter as a solid, liquid, or gas.
  7. A substance produced in a chemical reaction.
  8. A group of atoms bonded together.

16 Clues: Mass per unit volume. • Smallest particle of an element. • A group of atoms bonded together. • Made of one type of material throughout. • A substance produced in a chemical reaction. • This is the best class in Piper Middle School • A characteristic of a substance that does not change. • A material's ability to burn in the presence of oxygen. • ...

Chemistry crossword 2023-08-30

Chemistry crossword crossword puzzle
Across
  1. naturally-occurring chemical element found in rock in the earth's crust, including in deposits of coal.
  2. chemical element with the symbol K and atomic number 19.
  3. a reaction or process accompanied by the release of heat.
  4. chemical element with the symbol Mg and atomic number 12.
  5. a reaction or process accompanied by or requiring the absorption of heat.
  6. particle that consists of a nucleus of protons and neutrons surrounded by an electromagnetically-bound cloud of electrons.
  7. chemical element with the symbol Al and atomic number 13
Down
  1. a cylindrical container with a flat bottom
  2. a naturally occurring element that is a liquid at room temperature
  3. not related to, involving, or produced by chemicals.
  4. a substance that dissolves a solute, resulting in a solution.
  5. the formation of a chemical bond between two or more atoms, molecules or ions to give rise to a chemical compound.
  6. highly resistant to chemical attack and has the highest strength to weight ratio of any metal

13 Clues: a cylindrical container with a flat bottom • not related to, involving, or produced by chemicals. • chemical element with the symbol K and atomic number 19. • chemical element with the symbol Al and atomic number 13 • a reaction or process accompanied by the release of heat. • chemical element with the symbol Mg and atomic number 12. • ...

11-1 2024-10-27

11-1 crossword puzzle
Across
  1. No. 1 in the periodic table
  2. rain or snow
  3. agent of change
  4. process that causes rust
  5. part of Miss Muffet's meal
  6. winter (in Spanish)
  7. a chemical that combines two or more elements
Down
  1. result of a patient look
  2. fireplace (in Spanish)
  3. bleaching chemical
  4. blizzard (in Spanish)
  5. methods used
  6. chemical change

13 Clues: rain or snow • methods used • agent of change • chemical change • bleaching chemical • winter (in Spanish) • blizzard (in Spanish) • fireplace (in Spanish) • result of a patient look • process that causes rust • part of Miss Muffet's meal • No. 1 in the periodic table • a chemical that combines two or more elements

43 2025-11-30

43 crossword puzzle
Across
  1. Graph showing energy interactions
  2. Study of chemical reactions involving light
  3. Step sustaining chain reaction
  4. Addition of hydrogen to unsaturated bonds
  5. Emission of light after excitation
  6. Used to detect conjugated systems
  7. Reaction adding halogen atoms
  8. Decomposition by light
  9. Step forming radicals
  10. Area under NMR peak showing quantity
Down
  1. Introducing nitro group to aromatic ring
  2. Part of molecule absorbing light
  3. Step ending radical reaction
  4. NMR peak position indicator
  5. Used to identify functional groups
  6. Study of interaction with light
  7. Detects carbon environment in molecule
  8. Splitting of NMR peaks by neighbors
  9. Cleavage of alkenes using ozone
  10. Detects hydrogen environment in molecule
  11. Species with unpaired electron

21 Clues: Step forming radicals • Decomposition by light • NMR peak position indicator • Step ending radical reaction • Reaction adding halogen atoms • Step sustaining chain reaction • Species with unpaired electron • Study of interaction with light • Cleavage of alkenes using ozone • Part of molecule absorbing light • Graph showing energy interactions • Used to detect conjugated systems • ...

Extension activity-lane sutton 2023-01-30

Extension activity-lane sutton crossword puzzle
Across
  1. 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.
  2. equation for a chemical reaction in which the number of atoms for each element in the reaction and the total charge is the same for both the reactants and the products
  3. a word, letter, number, or symbol written or printed just below another word, letter, number, or symbol, usually in a smaller size
Down
  1. -a number or an alphabet that is multiplied by a variable of a single term or the terms of a polynomial.
  2. defines a product's goals, attributes, and overall direction.
  3. measure of a chemical reaction's efficiency, as a ratio of moles of product to moles of reactant.
  4. the reactant or product side is not level in coefficients
  5. substances that start a chemical reaction
  6. of conservation mass- in a chemical reaction mass is neither created nor destroyed.

9 Clues: substances that start a chemical reaction • the reactant or product side is not level in coefficients • defines a product's goals, attributes, and overall direction. • of conservation mass- in a chemical reaction mass is neither created nor destroyed. • measure of a chemical reaction's efficiency, as a ratio of moles of product to moles of reactant. • ...

Physical and chemicals 2025-04-15

Physical and chemicals crossword puzzle
Across
  1. A solid that forms when two liquids react (chemical change).
  2. A physical change where a liquid turns to a gas (example: water boiling into steam).
  3. A physical change where a solid becomes a liquid (example: ice melting).
  4. A chemical change where something reacts with oxygen and gives off heat or light.
  5. Anything that has mass and takes up space.
  6. Change A change in a substance that does not change what it is (example: cutting paper, melting ice).
  7. Change A clue that a chemical change might have happened.
  8. A physical change where gas becomes liquid (example: water droplets on a cold glass).
  9. A chemical change where a metal changes color (example: silver turning black).
  10. Formation When bubbles form during a reaction, it may be a chemical change.
Down
  1. A physical change where a liquid becomes a solid (example: water freezing into ice).
  2. A chemical change where iron reacts with oxygen to form rust.
  3. When one or more substances change into something new.
  4. A physical change where a liquid becomes a gas at the surface.
  5. Change A change that forms a new substance with different properties (example: rusting iron, burning wood).

15 Clues: Anything that has mass and takes up space. • When one or more substances change into something new. • Change A clue that a chemical change might have happened. • A solid that forms when two liquids react (chemical change). • A chemical change where iron reacts with oxygen to form rust. • A physical change where a liquid becomes a gas at the surface. • ...

Chemistry 2017-11-08

Chemistry crossword puzzle
Across
  1. the number of protons in the nucleus of an atom
  2. workplace hazardous materials information system
  3. change in appearance or state
  4. when a gas changes to a solid
  5. the mixture of magic and chemistry
  6. can eat away or corrode
  7. when non-metal combine
  8. mixture of two or more pure substances that look like one substance
  9. the mass of all protons and neutrons in an atom
  10. ability to conduct electricity or heat
  11. made up of one type of matter
  12. chemical reaction that absorbs heat energy
  13. substances in a reaction
Down
  1. contaminated material that is a threat to humans and health
  2. the center of an atom
  3. when a solid changes to a gas
  4. mixture in which the different substances are visible
  5. when a new substance is formed and non-reversible
  6. pure substance that cannot broken down any further
  7. chemical reaction that releases heat energy
  8. a compound of a metal and non-metal
  9. electrically charged atoms
  10. can be in between metals and non-metals
  11. shiniest of a substances,
  12. the horizontal rows on the periodic table

25 Clues: the center of an atom • when non-metal combine • can eat away or corrode • substances in a reaction • shiniest of a substances, • electrically charged atoms • when a solid changes to a gas • change in appearance or state • when a gas changes to a solid • made up of one type of matter • the mixture of magic and chemistry • a compound of a metal and non-metal • ...

Chemistry 2017-11-08

Chemistry crossword puzzle
Across
  1. pure substance that cannot broken down any further
  2. the mixture of magic and chemistry
  3. the mass of all protons and neutrons in an atom
  4. chemical reaction that absorbs heat energy
  5. the center of an atom
  6. when a new substance is formed and non-reversible
  7. made up of one type of matter
  8. mixture in which the different substances are visible
  9. mixture of two or more pure substances that look like one substance
  10. when a gas changes to a solid
  11. the number of protons in the nucleus of an atom
  12. shiniest of a substances,
Down
  1. chemical reaction that releases heat energy
  2. workplace hazardous materials information system
  3. when a solid changes to a gas
  4. can be in between metals and non-metals
  5. can eat away or corrode
  6. change in appearance or state
  7. when non-metal combine
  8. a compound of a metal and non-metal
  9. contaminated material that is a threat to humans and health
  10. ability to conduct electricity or heat
  11. the horizontal rows on the periodic table
  12. electrically charged atoms
  13. substances in a reaction

25 Clues: the center of an atom • when non-metal combine • can eat away or corrode • substances in a reaction • shiniest of a substances, • electrically charged atoms • when a solid changes to a gas • change in appearance or state • made up of one type of matter • when a gas changes to a solid • the mixture of magic and chemistry • a compound of a metal and non-metal • ...

Biomolecules 2013-09-26

Biomolecules crossword puzzle
Across
  1. carbon has 4 electrons available to _____with other elements
  2. the building blocks of proteins
  3. a type of protein that speeds up chemical reactions in our bodies
  4. as the concentration of a substrate increases the reaction rate of an enzyme-controlled reaction ____
  5. sugars are __________
  6. an example of a lipid
  7. Carbs have 2 atoms of this element for each carbon atom
  8. the covalent bond that attaches amino acids to form protein polymers
  9. Compounds with same formula but different 3-D structures
  10. biomolecule that repels water
Down
  1. large molecule formed when many smaller molecules bond into a long chain
  2. nucleic acids are made of the subunits
  3. a pH that is either acidic or basic will denature an enzyme and cause reaction rates to ____
  4. is made of protein
  5. when temperature or pH cause an enzyme to deform and lose effectiveness
  6. element found in Nucleic acids but not the other biomolecules
  7. the chemical symbols of the 3 elements found in all biomolecules
  8. cell structure that is made of lipids
  9. large organic molecules
  10. an example of a nucleic acid, carries an organisms genetic code

20 Clues: is made of protein • sugars are __________ • an example of a lipid • large organic molecules • biomolecule that repels water • the building blocks of proteins • cell structure that is made of lipids • nucleic acids are made of the subunits • Carbs have 2 atoms of this element for each carbon atom • Compounds with same formula but different 3-D structures • ...

Chemistry Crossword 2015-11-17

Chemistry Crossword crossword puzzle
Across
  1. Materials at the start of a reaction.
  2. The most reactive non metals.
  3. Substances formed as a result of the attraction between particles of opposite charges.
  4. Materials produced by a reaction.
  5. The smallest part of an element.
  6. Catalyst involved in chemical reactions in living things.
  7. Most reactive metals.
  8. Positively charged particles.
  9. Neutral particle
  10. An atom that has become electrically charged.
  11. Element that has both metallic and non metallic properties.
  12. Slow chemical change that occurs when air reacts with metal.
Down
  1. A pure substance that cannot be broken down any further.
  2. Heat being given off
  3. When non metals combine.
  4. Absorption of heat.
  5. Takes place when two or more substances combine to form a new substance.
  6. Substances that help a reaction proceed faster.
  7. Gas to solid.
  8. Anything that has mass and occupies space.
  9. Negatively charged particle in an atom.
  10. Solid to a gas.
  11. Most stable and unreactive element.
  12. Positively charged centre of an atom.
  13. The amount of mass in a given volume of a substance.

25 Clues: Gas to solid. • Solid to a gas. • Neutral particle • Absorption of heat. • Heat being given off • Most reactive metals. • When non metals combine. • The most reactive non metals. • Positively charged particles. • The smallest part of an element. • Materials produced by a reaction. • Most stable and unreactive element. • Materials at the start of a reaction. • ...

Chemistry Crossword 2015-11-17

Chemistry Crossword crossword puzzle
Across
  1. Positively charged particles.
  2. Neutral particle
  3. When non metals combine.
  4. Materials at the start of a reaction.
  5. Takes place when two or more substances combine to form a new substance.
  6. Materials produced by a reaction.
  7. Gas to solid.
  8. Most stable and unreactive element.
  9. Solid to a gas.
  10. The amount of mass in a given volume of a substance.
  11. The smallest part of an element.
Down
  1. Anything that has mass and occupies space.
  2. Heat being given off
  3. Most reactive metals.
  4. The most reactive non metals.
  5. Element that has both metallic and non metallic properties.
  6. Slow chemical change that occurs when air reacts with metal.
  7. Substances formed as a result of the attraction between particles of opposite charges.
  8. Negatively charged particle in an atom.
  9. Positively charged centre of an atom.
  10. Absorption of heat.
  11. A pure substance that cannot be broken down any further.
  12. An atom that has become electrically charged.
  13. Catalyst involved in chemical reactions in living things.
  14. Substances that help a reaction proceed faster.

25 Clues: Gas to solid. • Solid to a gas. • Neutral particle • Absorption of heat. • Heat being given off • Most reactive metals. • When non metals combine. • Positively charged particles. • The most reactive non metals. • The smallest part of an element. • Materials produced by a reaction. • Most stable and unreactive element. • Materials at the start of a reaction. • ...

Chemistry Crossword 2016-02-10

Chemistry Crossword crossword puzzle
Across
  1. regions of space outside nucleus
  2. creator of Periodic Table
  3. properties between a metal and non metal
  4. very outer electrons
  5. element compounds that are in solutions that form hydroxides
  6. absorbs energy
  7. smallest part of an element
  8. mass of an atom of a chemical element
  9. positively charged center of an atom, very high density
  10. any gas in Group O
  11. composed of two or more separate elements
  12. a row of elements
Down
  1. matter can be changed from one form to another
  2. a part or aspect of something abstract
  3. a thin coating of gold, silver, or other metals
  4. same number of protons and electrons
  5. no characteristics of a metal and able to conduct heat
  6. move around nucleus and has a negative charge
  7. releases energy
  8. a substance that takes part in and changes in a reaction
  9. found in nucleus and has a positive charge
  10. in the nucleus and has no electric charge
  11. a group of atoms bonded together
  12. abbreviation or short representation of an element
  13. the result of a chemical reaction
  14. a column of elements

26 Clues: absorbs energy • releases energy • a row of elements • any gas in Group O • very outer electrons • a column of elements • creator of Periodic Table • smallest part of an element • regions of space outside nucleus • a group of atoms bonded together • the result of a chemical reaction • same number of protons and electrons • mass of an atom of a chemical element • ...