chemical reaction Crossword Puzzles

Crossword Balancing Equation 2024-11-13

Crossword Balancing Equation crossword puzzle
Across
  1. The Law of___________ states that mass is never destroyed or created.
  2. The process of when a liquid turns into a soild ______.
  3. When the chemical equation is not balanced what is it.
  4. A number that's in front of an element or a compound.
  5. In which part of the chemical equation is the "yield".
  6. Changing from one state of matter to another is a ______ change.
Down
  1. What is the term used for the elements and compounds before a chemical reaction takes place?
  2. What changes its form.
  3. Is this chemical equation balanced or unbalanced. C6H12O2 + 8O2 > 6CO2 +6H20
  4. Matter is anything that has mass and takes up _______.
  5. The French chemist that experimented on a fruit, by leaving it in a jar and letting it rot.
  6. Products are on the ____.
  7. What is the term used for the elements and compounds after a chemical reaction takes place?
  8. Reactants are on the ___.

14 Clues: What changes its form. • Products are on the ____. • Reactants are on the ___. • A number that's in front of an element or a compound. • Matter is anything that has mass and takes up _______. • When the chemical equation is not balanced what is it. • In which part of the chemical equation is the "yield". • The process of when a liquid turns into a soild ______. • ...

Chemical Equations Gizmo Page 1 and 2 2022-05-03

Chemical Equations Gizmo Page 1 and 2 crossword puzzle
Across
  1. this means "before"
  2. are put into the text box of the gizmo for each reaction
  3. the substance or substances that are the result of chemical reactions
  4. this law of matter states no atoms are created or destroyed in a chemical reaction
Down
  1. this is an app used for online activities
  2. the substance or substances that react in a chemical reaction
  3. chemical _____ - burning is an example of this
  4. the small number 2 in H2 is called

8 Clues: this means "before" • the small number 2 in H2 is called • this is an app used for online activities • chemical _____ - burning is an example of this • are put into the text box of the gizmo for each reaction • the substance or substances that react in a chemical reaction • the substance or substances that are the result of chemical reactions • ...

Chemistry Unit Review 2016-02-10

Chemistry Unit Review crossword puzzle
Across
  1. two or more elements
  2. Gauseuas elements
  3. releasing energy
  4. chemical substance
  5. chemical consumed to make a product
  6. amount of mass remains the same
  7. positive charge
  8. horizontal lines
  9. negative charge
  10. typically hard, opaque and shiny
  11. neutral charge
  12. product of a chemical reaction
  13. columns
Down
  1. creator of the periodic table of elements
  2. outer electrons (two words)
  3. a group of atoms
  4. number of electrons in an element
  5. absorbing energy
  6. name of a superheroe
  7. lacks metallic features
  8. has metal and non-metal features
  9. abbreviation for an element
  10. the center
  11. "ring"
  12. thin coating

25 Clues: "ring" • columns • the center • thin coating • neutral charge • positive charge • negative charge • releasing energy • a group of atoms • absorbing energy • horizontal lines • Gauseuas elements • chemical substance • two or more elements • name of a superheroe • lacks metallic features • outer electrons (two words) • abbreviation for an element • product of a chemical reaction • ...

Physical Science Crossword 2014-05-22

Physical Science Crossword crossword puzzle
Across
  1. the amount of matter in an object
  2. the amount of force exerted per unit of area.
  3. a substance that stops or slows down the flow of thermal energy or electricity.
  4. a chemical reaction that uses more energy than it gives off.
  5. a chemical reaction that gives off more energy than it uses.
  6. a column in the the periodic table.
  7. any matter that flows when force is applied.
  8. a substance that allows electricity or thermal energy to flow easily.
Down
  1. the strongest known force in the universe, the force that holds the protons together in the nucleus.
  2. a compound that creates hydroxide ions when dissolved in water.
  3. the sum of all forces acting on an object.
  4. a measure of the pulling force of gravity.
  5. a measure of the concentration of hydronium ions in a solution.
  6. the new substance made in a chemical reaction.
  7. a mixture of two or more substances that are homogeneous at the molecular level.

15 Clues: the amount of matter in an object • a column in the the periodic table. • the sum of all forces acting on an object. • a measure of the pulling force of gravity. • any matter that flows when force is applied. • the amount of force exerted per unit of area. • the new substance made in a chemical reaction. • a chemical reaction that uses more energy than it gives off. • ...

chemical reactions :| 2024-11-08

chemical reactions :| crossword puzzle
Across
  1. written on the left side of a chemical equation
  2. a chemical change, can take the form of fizzing
  3. solid material coming from liquid substance
  4. the most basic unit of matter
  5. a reaction where energy is being released
  6. written on the right side of a chemical equation
Down
  1. a substance that's made up of atoms + can't be broken down into simpler substances during a normal chemical reaction
  2. a reaction where energy is being absorbed
  3. when chemicals combine to form new ones

9 Clues: the most basic unit of matter • when chemicals combine to form new ones • a reaction where energy is being absorbed • a reaction where energy is being released • solid material coming from liquid substance • written on the left side of a chemical equation • a chemical change, can take the form of fizzing • written on the right side of a chemical equation • ...

science 2016-12-14

science crossword puzzle
Across
  1. / A soft, silver-white metal belonging to the alkali metal group of chemical element.
  2. / The element in group 8 and period 4.
  3. / The largest naturally occuring element.
  4. / Charged particle made up of several non metallic atoms joined together.
  5. / Poor conductor of heat.
  6. / The first of the synthetic element.
  7. / ____are used to pick up small object.
  8. / Ability of a substance to conduct heat,sound or electricity.
  9. / Determined without destroying matter.
  10. / an alkaline battery.
  11. /_____for removing and holding a hot beaker.
  12. / The element that has atomic number 32.
  13. / The third most abundant element in the cosmos,after hydrogen and helious.
  14. / an posotively charged ion.
  15. / substances that, in aqueous solution, are slippery to the touch, taste astringent, change the color of indicators (e.g., turn red litmus paper blue),
Down
  1. / A change in the physical and chemical properties.
  2. / an element is defined by the nucleon number, which is the sum of the number of protons and the number of neutrons in the atomic nucleus.
  3. / Non-metals in group 17 in the periodic table, fluorine,chlorine, bromine and iodine.
  4. / ____is any chemical element which has properties between those of metal and non-metal.
  5. / The element in group 3 to 12 are referred to as ...
  6. / ____ is pH changes very little when a small amount of strong acid or base is added to it.
  7. / Unreactive with all, but the most corrosive of acids.
  8. / Chemical reaction in which an acid and a bases react quantitatively with each other.
  9. / ....mixture is one that has uniform composition and the same properties throughout the mixture.
  10. / Type of bond formed when electrons transfer between metals and non-metals.
  11. / Chemical combination of two or more elements.
  12. / Compound produced in a neutralization reaction between an acid and a base.
  13. / A substance that cannot be broken down into simpler components by any non-nuclear chemical reaction.
  14. / Positively charged centre of the atom made up of protons and neutrons.
  15. / a subatomic particle with a positive electric charge of +1e.

30 Clues: / an alkaline battery. • / Poor conductor of heat. • / an posotively charged ion. • / The first of the synthetic element. • / The element in group 8 and period 4. • / ____are used to pick up small object. • / Determined without destroying matter. • / The element that has atomic number 32. • / The largest naturally occuring element. • ...

Topic 5: Enzymes 2022-04-05

Topic 5: Enzymes crossword puzzle
Across
  1. biological catalyst
  2. how enzyme behave at low temperature
  3. Protein becoming amino acids
  4. sites where substrates bind
  5. when enzyme binds to the substrate
  6. substance that speed up chemical reaction
Down
  1. some enzyme only act on some substances
  2. Enzyme no longer fit with substrate
  3. reactions that can proceed in forward or backward direction
  4. ideal condition
  5. energy required before starting a chemical reaction
  6. -and-key hypothesis

12 Clues: ideal condition • biological catalyst • -and-key hypothesis • sites where substrates bind • Protein becoming amino acids • when enzyme binds to the substrate • Enzyme no longer fit with substrate • how enzyme behave at low temperature • some enzyme only act on some substances • substance that speed up chemical reaction • energy required before starting a chemical reaction • ...

Unit 6 2024-04-11

Unit 6 crossword puzzle
Across
  1. The chemical substances which are formed due to a chemical reaction between two or more chemical substances
  2. the reaction between an acid and a base, which produces a salt and water.
  3. a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change
  4. the appearance or form of the matter changes but the kind of matter in the substance does not.
  5. a substance that can accept hydrogen ions in water and can neutralize an acid
Down
  1. a small number written at the bottom of the symbol
  2. the kind of matter changes and at least one new substance with new properties is formed
  3. a substance that takes part in and undergoes change during a reaction.
  4. A chemical that gives off hydrogen ions in water and forms salts by combining with certain metals
  5. a figure expressing the acidity or alkalinity of a solution on a logarithmic scale on which 7 is neutral, lower values are more acid and higher values more alkaline

10 Clues: a small number written at the bottom of the symbol • a substance that takes part in and undergoes change during a reaction. • the reaction between an acid and a base, which produces a salt and water. • a substance that can accept hydrogen ions in water and can neutralize an acid • ...

PSB 338 Ch 13 Introduction to Metabolism 2022-06-28

PSB 338 Ch 13 Introduction to Metabolism crossword puzzle
Across
  1. This variable describes the rate of metabolic flow in the steady-state of a cell.
  2. This thermodynamic variable is the quantitative expression for the randomness or disorder in a system.
  3. The first law of thermodynamics is the principle of the conservation of ______.
  4. This type of cleavage of a covalent bond where one atom retains both bonding electrons.
  5. This designates a single electron equivalent participating in an oxidation-reduction reaction; reducing _______.
  6. These type of molecules can influence enzyme activity are nuclear proteins that can activate or repress gene expression; ________ factors.
  7. These type of molecules can affect enzyme activity by binding to an enzyme outside of the enzyme active site; ______ effectors.
  8. A _____ standard reduction potential indicates the molecule will take electrons.
  9. This process of metabolism is the degradative phase of metabolism, which releases energy.
  10. This type of reacting molecules are electron-deficient functional groups that seek electrons.
  11. This class of enzyme catalyzes oxidation-reduction reactions in with NAD+ is the electron acceptor.
  12. This type of chemical reaction results in a transfer of adenylate as an adenyl group.
  13. These organisms obtain their carbon from their environment and produce CO2.
  14. True or False: Electrons can move from metabolic intermediates to electron carriers to acceptors with higher electron affinities releases energy.
Down
  1. This type of chemical reaction is a redistribution of electrons in alterations without changes in the overall oxidation state of the molecule.
  2. This is the force proportional to the difference in electron affinity between chemical species (use acronym).
  3. This type of chemical reaction releases free energy.
  4. This class of enzymes catalyzes the condensation reactions that require a nucleotide triphosphate.
  5. This method can affect enzyme activity by keeping the enzyme and substrates in different compartments to alter enzyme activity.
  6. This thermodynamic variable is related to the number and kinds of chemical bonds in the reactants and products.
  7. An oxidation reaction results in a _____ of electrons.
  8. True or False: Enzymes can only be regulated by one method.
  9. Thermodynamically unfavorable reactions can be ______ to favorable reactions to drive them in the forward reaction.
  10. This type of reacting molecules are functional groups rich in and capable of donating electrons.
  11. The _____ conversion of ATP to ADP to Pi is coupled to many endergonic reactions and processes.
  12. This class of enzymes catalyzes the removal of a phosphoryl group from a phosphate ester.
  13. This class of enzyme that catalyzes phosphoryl group transfers with ATP as a donor.
  14. This molecule is a most sensitive indicator of the energy state of the cell.
  15. This type of coenzymes are usually enzyme-bound to flavoproteins.
  16. The difference in free energy between reactant and products is greater for ________ than oxygen esters.

30 Clues: This type of chemical reaction releases free energy. • An oxidation reaction results in a _____ of electrons. • True or False: Enzymes can only be regulated by one method. • This type of coenzymes are usually enzyme-bound to flavoproteins. • These organisms obtain their carbon from their environment and produce CO2. • ...

Unit 7 vocab 2024-01-16

Unit 7 vocab crossword puzzle
Across
  1. When anything solid turns into a gas without first becoming liquid
  2. the amount of energy stored in a bond between atoms in a molecule
  3. the process of measuring the amount of heat released or absorbed during a chemical reaction
  4. the formula that an algorithm feeds data to in order to calculate predictions
  5. the measure of hotness or coldness expressed in terms of any of several scales, including Fahrenheit and Celsius
  6. the heat which can increase one unit temperature of a mass unit of a substance
  7. the quality of being hot; high temperature.
  8. the amount of heat needed to turn 1g of a liquid into a vapor, without a rise in the temperature of the liquid
  9. the change in enthalpy when one mole of a substance in the standard state
  10. the act or process of melting or making fluid by heat
  11. The condition under which two substances in physical contact with each other exchange no heat energy
  12. a very simplified representation of the valence shell electrons in a molecule
  13. the sum of the internal energy and the product of the pressure and volume of a thermodynamic system
  14. the difference between the reaction system energy before and after a reaction
  15. everything that is not directly involved in the reaction.
  16. the values which depend on the state of the substance
  17. chemical reactions in which the reactants absorb heat energy from the surroundings to form products
  18. thermal energy transferred between two systems at different temperatures that come in contact
  19. a collection of objects (or smaller systems) that can be identified
  20. The average of kinetic energy of all the molecules present that matter
Down
  1. the process where water vapor becomes liquid
  2. an equation that takes two or more steps to solve
  3. the quantity of heat necessary to change 1 g of a solid to a liquid with no temperature change
  4. used to measure the amount of thermal energy transferred in a chemical or physical process
  5. the release of heat
  6. chemical reactions in which the reactants absorb heat energy from the surroundings to form products
  7. Heating curves show how the temperature changes as a substance is heated up. Cooling curves are the opposite. They show how the temperature changes as a substance is cooled down
  8. the process in which a gas changes directly to a solid without going through the liquid state
  9. the branch of chemistry concerned with the quantities of heat evolved or absorbed during chemical reactions
  10. n a chemical reaction, the change of enthalpy (i.e. the heat of reaction under constant pressure) is independent of the direction between the original and final states

30 Clues: the release of heat • the quality of being hot; high temperature. • the process where water vapor becomes liquid • an equation that takes two or more steps to solve • the act or process of melting or making fluid by heat • the values which depend on the state of the substance • everything that is not directly involved in the reaction. • ...

Chapter 1.1, 1.2 Crossword 2019-09-27

Chapter 1.1, 1.2 Crossword crossword puzzle
Across
  1. Monomer of protein
  2. the energy needed to increase a given amount of a substance by 1 Kelvin
  3. The process of monomers reaction to create a polymer
  4. the electromagnetic attraction between a positively charged hydrogen atom and another negatively charged atom
  5. a fatty acid with only single carbon carbon bonds
  6. a subunit of a molecule
  7. Nucleic Acid Polymer with one more oxygen than its counterpart
  8. The structure in which a substance has the maximum energy state in a chemical reaction
  9. a chemical where electrons are shared between 2 atoms
  10. the breakdown of molecules to obtain energy
Down
  1. all life sustaining chemical reactions in a living being
  2. A polysaccharide found in the exoskeleton of insects
  3. Nucleic Acid Polymer with one less oxygen than its counterpart
  4. a fatty acid with at least 1 double bond between 2 carbon
  5. covalent Bond between two amino acids
  6. a chemical bond where valence electrons are transferred, forming oppositely charged ions
  7. the energy needed to increase 1 gram of a substance by 1 Kelvin
  8. the synthesis of compounds neeeded by cells
  9. the theory that all living beings are made of cells
  10. A polysaccharide that acts as long term glucose storage in animals

20 Clues: Monomer of protein • a subunit of a molecule • covalent Bond between two amino acids • the synthesis of compounds neeeded by cells • the breakdown of molecules to obtain energy • a fatty acid with only single carbon carbon bonds • the theory that all living beings are made of cells • A polysaccharide found in the exoskeleton of insects • ...

Story 2 Crossword 2023-11-23

Story 2 Crossword crossword puzzle
Across
  1. to spread out
  2. humans selecting offspring with favorable traits to reproduce
  3. any pure substance that we know the composition of the particles
  4. particles in mixture evenly mixed
  5. substances present before chemical reaction
  6. smallest particle of matter
  7. anything that has mass and takes up space
  8. atoms are not created or destroyed in chemical reactions
  9. substance composed of all the same molecule
  10. particles in mixture not well mixed so different parts are visible
  11. one or two letters used to represent an element.
Down
  1. sexual reproduction method of plants
  2. particle made of many atoms bonded together
  3. how heavy the nucleus of an atom is
  4. when particles of different substances rearrange creating new substances
  5. substances composed of many different particles
  6. cut and pasting DNA from one organism to another
  7. number of protons in an atom and is used to identify each element
  8. substances composed of only one particle
  9. substance composed of all the same atom
  10. organized chart showing repeating patterns on known elements
  11. shows the type and number of atoms in a molecule
  12. completely copying DNA of one organism to create a copy
  13. substances present after chemical reaction

24 Clues: to spread out • smallest particle of matter • particles in mixture evenly mixed • how heavy the nucleus of an atom is • sexual reproduction method of plants • substance composed of all the same atom • substances composed of only one particle • anything that has mass and takes up space • substances present after chemical reaction • particle made of many atoms bonded together • ...

Enzymes Review 2023-11-14

Enzymes Review crossword puzzle
Across
  1. the name of the reactions that join substrates and require energy
  2. enzymes belong to this type of macromolecule.
  3. all enzymes end in these three letters
  4. enzymes lower this energy in order to speed up a chemical reaction
  5. another name for the substrates that enzymes interact with
  6. the type of inhibitor that binds to an enzymes active site
  7. the location on an enzyme where the substrate binds to.
  8. what substrates are turned in to in a chemical reaction
Down
  1. the type of inhibitor that binds to the enzymes allosteric site
  2. the name of the complex formed when a substrate binds to an enzyme
  3. Anything that speeds up a chemical reaction is known as this
  4. the name of the reactant that binds to an enzyme
  5. this is what happens to an enzyme when it is exposed to high heat or pH
  6. the name of the reactions that break down substrates and release energy
  7. this aspect of an enzyme determines its function.

15 Clues: all enzymes end in these three letters • enzymes belong to this type of macromolecule. • the name of the reactant that binds to an enzyme • this aspect of an enzyme determines its function. • the location on an enzyme where the substrate binds to. • what substrates are turned in to in a chemical reaction • another name for the substrates that enzymes interact with • ...

Intro to Anatomy and Physiology 2015-08-26

Intro to Anatomy and Physiology crossword puzzle
Across
  1. area of knowledge, theory
  2. taking in a chemical through your cells and tissue
  3. between
  4. up, against or back
  5. force being put on an object
  6. transporting oxygen to your cells and tissue
  7. chemical reaction involved in keeping cells alive
  8. cutting
  9. the breakdown of food molecules
  10. nature
Down
  1. relating to nature
  2. the same
  3. a chemical that causes stress
  4. the conversion of absorbed food into the body
  5. before
  6. within
  7. waste products being removed from the body
  8. organs that all do a similar function
  9. after
  10. cells that all do a similar function

20 Clues: after • before • within • nature • between • cutting • the same • relating to nature • up, against or back • area of knowledge, theory • force being put on an object • a chemical that causes stress • the breakdown of food molecules • cells that all do a similar function • organs that all do a similar function • waste products being removed from the body • ...

Matter and Energy Vocab words 2024-10-10

Matter and Energy Vocab words crossword puzzle
Across
  1. Working with chemical
  2. Defined by gravities pull
  3. How much is in
  4. Measurement of heat
  5. A kind of matter with specific properties.
  6. Gas to liquid
  7. Two or more atoms combined
  8. The smallest unit
  9. Not solid or gas
  10. A force
Down
  1. Can be observed with the 5 senses
  2. A pure chemical substance
  3. 1000x more than gram
  4. How much is packed
  5. A grid with the elements
  6. describes how a substance behaves during a chemical reaction
  7. Not solid or liquid
  8. The amount of matter in an object
  9. Not liquid or gas
  10. Anything Eneything thing that exists

20 Clues: A force • Gas to liquid • How much is in • Not solid or gas • Not liquid or gas • The smallest unit • How much is packed • Measurement of heat • Not solid or liquid • 1000x more than gram • Working with chemical • A grid with the elements • Defined by gravities pull • A pure chemical substance • Two or more atoms combined • Can be observed with the 5 senses • The amount of matter in an object • ...

Topic 5: Enzymes 2022-04-05

Topic 5: Enzymes crossword puzzle
Across
  1. biological catalyst
  2. how enzyme behave at low temperature
  3. Protein becoming amino acids
  4. sites where substrates bind
  5. when enzyme binds to the substrate
  6. substance that speed up chemical reaction
Down
  1. some enzyme only act on some substances
  2. Enzyme no longer fit with substrate
  3. reactions that can proceed in forward or backward direction
  4. ideal condition
  5. energy required before starting a chemical reaction
  6. -and-key hypothesis

12 Clues: ideal condition • biological catalyst • -and-key hypothesis • sites where substrates bind • Protein becoming amino acids • when enzyme binds to the substrate • Enzyme no longer fit with substrate • how enzyme behave at low temperature • some enzyme only act on some substances • substance that speed up chemical reaction • energy required before starting a chemical reaction • ...

Physical and Chemical Changes 2018-09-03

Physical and Chemical Changes crossword puzzle
Across
  1. a physical property that does not depend on the amount of matter present
  2. change chemical reaction that takes place when two or more substances interact to form a new substance or substances.
  3. change change that does not alter the chemical properties of a substance.
  4. materials that enter into a chemical reaction.
Down
  1. materials that form as the result of a chemical reaction
  2. physical property that depends on the amount of matter present
  3. chemical change that takes place when two or more substances interact to form new substances with new properties.
  4. occurs when oxygen reacts with some other substance

8 Clues: materials that enter into a chemical reaction. • occurs when oxygen reacts with some other substance • materials that form as the result of a chemical reaction • physical property that depends on the amount of matter present • a physical property that does not depend on the amount of matter present • ...

Enzymes vocab crossword puzzle 2025-09-23

Enzymes vocab crossword puzzle crossword puzzle
Across
  1. Energy needed to start a reaction
  2. Reaction that absorbs heat energy
  3. Starting substances in a chemical reaction
  4. Reaction that releases heat energy
  5. Enzyme loses shape and cannot function
Down
  1. Region on enzyme where substrate binds
  2. Substance that speeds up a reaction
  3. Substances formed during a reaction
  4. Process of atoms being reorganized
  5. Proteins that act as biological catalysts
  6. Reactants that enzymes act upon

11 Clues: Reactants that enzymes act upon • Energy needed to start a reaction • Reaction that absorbs heat energy • Process of atoms being reorganized • Reaction that releases heat energy • Substance that speeds up a reaction • Substances formed during a reaction • Region on enzyme where substrate binds • Enzyme loses shape and cannot function • ...

Topic 5: Enzymes 2022-03-22

Topic 5: Enzymes crossword puzzle
Across
  1. biological catalyst
  2. how enzyme behave at low temperature
  3. Protein becoming amino acids
  4. sites where substrates bind
  5. when enzyme binds to the substrate
  6. substance that speed up chemical reaction
Down
  1. some enzyme only act on some substances
  2. Enzyme no longer fit with substrate
  3. reactions that can proceed in forward or backward direction
  4. ideal condition
  5. energy required before starting a chemical reaction
  6. -and-key hypothesis

12 Clues: ideal condition • biological catalyst • -and-key hypothesis • sites where substrates bind • Protein becoming amino acids • when enzyme binds to the substrate • Enzyme no longer fit with substrate • how enzyme behave at low temperature • some enzyme only act on some substances • substance that speed up chemical reaction • energy required before starting a chemical reaction • ...

Topic 5: Enzymes 2022-03-22

Topic 5: Enzymes crossword puzzle
Across
  1. biological catalyst
  2. how enzyme behave at low temperature
  3. Protein becoming amino acids
  4. sites where substrates bind
  5. when enzyme binds to the substrate
  6. substance that speed up chemical reaction
Down
  1. some enzyme only act on some substances
  2. Enzyme no longer fit with substrate
  3. reactions that can proceed in forward or backward direction
  4. ideal condition
  5. energy required before starting a chemical reaction
  6. -and-key hypothesis

12 Clues: ideal condition • biological catalyst • -and-key hypothesis • sites where substrates bind • Protein becoming amino acids • when enzyme binds to the substrate • Enzyme no longer fit with substrate • how enzyme behave at low temperature • some enzyme only act on some substances • substance that speed up chemical reaction • energy required before starting a chemical reaction • ...

Chapter 13 2017-02-27

Chapter 13 crossword puzzle
Across
  1. a burning candle is an example of ____
  2. in an _____ reaction there is a net absorption of energy
  3. water has a pH of___
  4. AB+C -> AC+B is an example of ___
  5. the solution is "acidic"
  6. is a chemical that accepts a hydrogen ion
Down
  1. is a chemical that donates a hydrogen
  2. AB+CD -> AD+CB is an example of ____
  3. the minimum energy required to break the bonds is called the
  4. in a ______ reaction there is a net release of energy
  5. AB-> A+B is an example of _____
  6. the solution is "basic"
  7. a sunstance that lowers the activation energy of a chemical reation
  8. is a measure of the comcentration of hydronium ions
  9. A+B -> AB is an example of ____

15 Clues: water has a pH of___ • the solution is "basic" • the solution is "acidic" • AB-> A+B is an example of _____ • A+B -> AB is an example of ____ • AB+C -> AC+B is an example of ___ • AB+CD -> AD+CB is an example of ____ • is a chemical that donates a hydrogen • a burning candle is an example of ____ • is a chemical that accepts a hydrogen ion • ...

Chemistry final crossword 2020-06-10

Chemistry final crossword crossword puzzle
Across
  1. lighter elements sometimes have too many neutrons
  2. the basic unit of matter
  3. table of chemical elements
  4. send into the air
  5. bang how the universe began
  6. something becomes a liquid by heat
  7. how far something is
  8. how far is it from starting cycle to ending cycle
  9. are dark planet-sized regions that appear on the sun
  10. the substances that combine in a chemical reaction
  11. one of states of matter
  12. when water becomes a solid
  13. a rearrangement of atoms into new substances
  14. able to be changed
Down
  1. anything having mass and taking up space
  2. microwave type of big bang theory
  3. mountain or hill which having lava
  4. spectrum chemical element or chemical compound
  5. one complete performance of a periodic process
  6. type of rocks
  7. atoms of same elements having a different mass
  8. fusion when two or more nuclei together
  9. light from the sun
  10. the relative amount of solute
  11. all atoms with more than 82 protons are radioactive
  12. matter and space as a whole
  13. useable power such as heat or electricity
  14. having a PH of less than 7

28 Clues: type of rocks • send into the air • light from the sun • able to be changed • how far something is • one of states of matter • the basic unit of matter • table of chemical elements • when water becomes a solid • having a PH of less than 7 • bang how the universe began • matter and space as a whole • the relative amount of solute • microwave type of big bang theory • ...

Chemistry Crossword 2014-11-07

Chemistry Crossword crossword puzzle
Across
  1. are substance that help reaction proceed faster
  2. change the results when two or more substance react to create a different substance or substances
  3. a table in which the elements are organized by their physical and chemical property
  4. property that describes the physical appearance and composition of a substance
  5. pure substance formed when at least one metal and non metal combine
  6. new substance produced
  7. change in the appearance or state of a substance that does not change the composition
  8. oxygen reacts with a substance
  9. absorbs energy
  10. mass of one atom of an element
  11. can be broken down into other substance
  12. cloudy mixture in which tiny particles of one substance are held within another and particles cannot be separated
Down
  1. release energy
  2. substance that react with another substance
  3. description of how substance interacts with other substances
  4. can be seperated
  5. all products of a chemical reaction are accounted for
  6. become electrically charged
  7. most reactive of the metals
  8. group 17 elements in periodic table
  9. two or more pure substance
  10. chemical combination of two or more elements in a specific ratio
  11. number of protons in the nucleus
  12. combination of pure substances
  13. slow chemical change

25 Clues: release energy • absorbs energy • can be seperated • slow chemical change • new substance produced • two or more pure substance • become electrically charged • most reactive of the metals • oxygen reacts with a substance • combination of pure substances • mass of one atom of an element • number of protons in the nucleus • group 17 elements in periodic table • ...

Unit B Science Crossword 2014-11-12

Unit B Science Crossword crossword puzzle
Across
  1. New substance produced
  2. The smallest part of an element
  3. Slow chemical change that occurs when oxygen reacts with a metal
  4. Change of state from a gas to a liquid
  5. Horizontal row of elements on Periodic Table
  6. The release of heat
  7. Change state from gas to solid
  8. Chemical combination of two or more elements in a specific ratio
  9. Substance that reacts with another substance
  10. A cloudy mixture in which the particles can't be easily separated
  11. An organic catalyst
Down
  1. Invisible negatively charged particle that orbits the nucleus
  2. A substance that speeds up a chemical reaction
  3. A physical substance
  4. A material that electric charge can move through easily
  5. Chemical reaction that occurs when oxygen reacts with a substance and gives off energy
  6. Ability of a substance to conduct electricity or heat
  7. The absorption of heat
  8. Workplace Hazardous Materials Information System
  9. Element that has both metallic and non-metallic properties
  10. A pure substance on the Periodic Table
  11. Can be pounded into sheets
  12. When an atom becomes electrically charged from the loss or gain of electrons
  13. Most reactive non-metals
  14. Can be stretched into long wire

25 Clues: The release of heat • An organic catalyst • A physical substance • New substance produced • The absorption of heat • Most reactive non-metals • Can be pounded into sheets • Change state from gas to solid • The smallest part of an element • Can be stretched into long wire • Change of state from a gas to a liquid • A pure substance on the Periodic Table • ...

Chemistry Bonus Crossword 2023-04-25

Chemistry Bonus Crossword crossword puzzle
Across
  1. an organism, especially a soil bacterium, fungus, or invertebrate, that decomposes organic material.
  2. a statement that the product of the pressure and volume of one mole of a gas equals the product of the gas constant by the absolute temperature
  3. the basic unit of a chemical element.
  4. bonds type of linkage formed from the electrostatic attraction between oppositely charged ions
  5. the relationship between the relative quantities of substances taking part in a reaction or forming a compound, typically a ratio of whole integers.
  6. solution An aqueous solution is a solution in which the solvent is water
  7. able to be dissolved, especially in water.
  8. an ion with positive charge
  9. cause to change in form, character, or function.
  10. the production of chemical compounds by reaction from simpler materials.
Down
  1. the process by which a liquid turns into a gas
  2. affect a reduction in the effective nuclear charge on the electron cloud,
  3. a standard scientific unit for measuring large quantities of very small entities such as atom
  4. a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction
  5. a number in positional notation are digits in the number that are reliable and necessary to indicate the quantity of something.
  6. neutral subatomic particle that, in conjunction with protons, makes up the nucleus of every atom except ordinary hydrogen
  7. gasses any of the gaseous elements helium, neon, argon, krypton, xenon, and radon, occupying Group 0 (18) of the periodic table. They were long believed to be totally unreactive but compounds of xenon, krypton, and radon are now known.
  8. the tendency of an atom to attract electrons in a molecule
  9. neutral subatomic particle that, in conjunction with protons, makes up the nucleus of every atom except ordinary hydrogen
  10. table the organized array of all the chemical elements in order of increasing atomic number

20 Clues: an ion with positive charge • the basic unit of a chemical element. • able to be dissolved, especially in water. • the process by which a liquid turns into a gas • cause to change in form, character, or function. • the tendency of an atom to attract electrons in a molecule • solution An aqueous solution is a solution in which the solvent is water • ...

Biology vocab 2022-09-19

Biology vocab crossword puzzle
Across
  1. substance that releases HYDROGEN ions when dissolved in water. PH level LESS than 7
  2. what holds atoms together in molecules
  3. substance that releases HYDROXIDE ions when dissolved in water. PH GREATER than 7
  4. type of chemical bond formed when atoms SHARE ELECTRONS
  5. organic compound containg carbon, hydrogen, and oxygen, in a ratio of one oxygen oxygen and 2 hydrogen atoms for each carbon atom
  6. weak electrostatic bond formed by attraction of opposite charges between a HYDROGEN AND OXYGEN ATOM
  7. specific places where a substrate binds on an enzyme
  8. mixture that can react with a base or an acid to maintain the PH within a specific range
  9. carbon compound joined by peptide bonds; builing blocks of protiens
  10. energy minimum amount of energy needed fir reactions to form products in a chemical reaction.
Down
  1. PURE SUBSTANCE with unique properties; formed when 2 OR MORE DIFFERENT ELEMENTS COMBINE
  2. substance that speeds a chemical reaction by reducing the activation energy
  3. energy requiring process by which atoms or groups of atoms in substances are changed into different substances
  4. atom that is negatively or positively charged because it has lost or gained an electron
  5. the action or property of molecules sticking togther; mutally attractive
  6. protein that speeds up a biological reaction by lowering the activation energy needed to start the reaction

16 Clues: what holds atoms together in molecules • specific places where a substrate binds on an enzyme • type of chemical bond formed when atoms SHARE ELECTRONS • carbon compound joined by peptide bonds; builing blocks of protiens • the action or property of molecules sticking togther; mutally attractive • ...

Chemical Reactions By Ravit 10T 2024-04-30

Chemical Reactions By Ravit 10T crossword puzzle
Across
  1. reddish brown oxide
  2. passing electric current to cause chemical change.
  3. insoluble particle like substances
  4. absorbing heat from surroundings
  5. splitting a substance into two or more substances
  6. a substance that takes part in a reaction
  7. a reaction where two or more substances combine
Down
  1. an atom or compound gaining electrons in a reaction
  2. atom or group of atoms is replaced by another group or atom.
  3. reaction of an acid and base
  4. oxidation of oils and fats in food
  5. a substance formed from a reaction
  6. when a metal surface is attacked by air or water
  7. Reduction and oxidation take place simultaneously.
  8. losing electrons from reactant to product

15 Clues: reddish brown oxide • reaction of an acid and base • absorbing heat from surroundings • oxidation of oils and fats in food • a substance formed from a reaction • insoluble particle like substances • losing electrons from reactant to product • a substance that takes part in a reaction • a reaction where two or more substances combine • ...

(1.3) Review 2022-09-15

(1.3) Review crossword puzzle
Across
  1. Starting materials for reaction/aka Substrate
  2. Energy needed to start all reactions
  3. 2nd case of what happens to energy in reactions
  4. Speed up/lower active energy needed
Down
  1. Where the substrate & enzyme attach
  2. Newly formed substance after the reaction
  3. How enzymes work/via 2 ways
  4. The ability to _____ matter or do work
  5. 1st case of what happens to energy in reactions
  6. Help out chemical reactions/end in'-ase'
  7. Type of chemical reaction/combines stuff

11 Clues: How enzymes work/via 2 ways • Where the substrate & enzyme attach • Speed up/lower active energy needed • Energy needed to start all reactions • The ability to _____ matter or do work • Help out chemical reactions/end in'-ase' • Type of chemical reaction/combines stuff • Newly formed substance after the reaction • Starting materials for reaction/aka Substrate • ...

Crossword Puzzle 2023-06-19

Crossword Puzzle crossword puzzle
Across
  1. Force, Refers to forces that hold individual particles such as atoms and ions.
  2. Catalyst, Present in the same phase as the reactant.
  3. Point Depression, The difference in temperature between the freezing point of the pure solvent and that of the solution.
  4. of Solution, The amount of solute in a given volume of a solution.
  5. Property of liquids refers to the measure of their resistance to flow.
  6. Is a compound that does not conduct an electric current in either aqueous solution or in the molten state.
  7. Chemical that conduct electricity when dissolved in water.
  8. What is a substance that speeds up the rate of chemical reaction called.
Down
  1. Is a homogeneous mixture consisting of a solute dissolved into a solvent.
  2. A measurement of concentration expressed as the number of moles of dissolved solute per liter of solution.
  3. by Volume, Is a measure of the concentration of a substance in a solution.
  4. Point Elevation, Is the difference in temperature between the boiling point of the pure solvent and that of the solution.
  5. of reaction, Enthalpy of reaction is also called.
  6. of Reaction, Amount of heat that must be added or remove during a chemical reaction in order to keep all of the substance present at the same temperature.
  7. Defined as the total mole of a solute contained in a kilogram of solvent.

15 Clues: of reaction, Enthalpy of reaction is also called. • Catalyst, Present in the same phase as the reactant. • Chemical that conduct electricity when dissolved in water. • of Solution, The amount of solute in a given volume of a solution. • Property of liquids refers to the measure of their resistance to flow. • ...

photosynthesis 2024-05-02

photosynthesis crossword puzzle
Across
  1. plant food
  2. produced by the sun
  3. green pigment that lets plants absorb sun
  4. substances that are formed in a chemical reaction
  5. altered in the course of a chemical reaction
Down
  1. process where plants make food
  2. released in photosynthesis
  3. H2O
  4. organelles
  5. carbon dioxide

10 Clues: H2O • plant food • organelles • carbon dioxide • produced by the sun • released in photosynthesis • process where plants make food • green pigment that lets plants absorb sun • altered in the course of a chemical reaction • substances that are formed in a chemical reaction

Types of Chemical Reactions 2024-05-20

Types of Chemical Reactions crossword puzzle
Across
  1. A reaction where a more complex molecule breaks down to form two or more simpler products
  2. containing water/watery
  3. Common Name of Calcium Oxide
  4. It combines with Hydrogen and loses oxygen to form another substance
  5. The number and kinds of atoms must be the same on both sides of the reaction arrow.
  6. When fats and oils stay in open for long, they get oxidized and their smell and taste change.
  7. When a more reactive element displaces a less reactive element from a compound
  8. It is a natural process that converts a refined metal into a more chemically stable oxide.
  9. Occurs when chemical bonds between atoms are formed or broken
Down
  1. The mass of any one element at the beginning of a reaction will equal the mass of that element at the end of the reaction.
  2. The reaction in which two reacting molecules exchange their ions in aqueous solution is double displacement.
  3. Common Name of Calcium Hydroxide
  4. A chemical reaction that takes place between an oxidizing substance and a reducing substance
  5. Formation of a single product from two or more reactants
  6. It combines with oxygen and loses hydrogen to form another substance

15 Clues: containing water/watery • Common Name of Calcium Oxide • Common Name of Calcium Hydroxide • Formation of a single product from two or more reactants • Occurs when chemical bonds between atoms are formed or broken • It combines with Hydrogen and loses oxygen to form another substance • It combines with oxygen and loses hydrogen to form another substance • ...

Chapter 19 & 20: Chemical Reactions & Radioactivity and Nuclear Reactions 2022-03-09

Chapter 19 & 20: Chemical Reactions & Radioactivity and Nuclear Reactions crossword puzzle
Across
  1. Shorthand method used to describe chemical reactions using chemical formulas and other symbols.
  2. Process that occurs when a nucleus decays and emits matter and energy.
  3. Number in a chemical equation that represents the number of units of each sustenance taking part in a chemical reaction.
  4. Particle consisting of two protons and two neutrons that is merited from a decaying atomic nucleus.
  5. In a chemical reaction, the new substance or substances formed.
  6. Series of fission reactions caused by the release of additional neutrons in every step.
Down
  1. High-energy electron that is emitted when a neutron decays into a proton.
  2. In a chemical reaction, the substance that reacts.
  3. Attractive force that acts between protons and neutrons in an atomic nucleus.
  4. Process in which one or more substances are changed into new substances.

10 Clues: In a chemical reaction, the substance that reacts. • In a chemical reaction, the new substance or substances formed. • Process that occurs when a nucleus decays and emits matter and energy. • Process in which one or more substances are changed into new substances. • High-energy electron that is emitted when a neutron decays into a proton. • ...

Crossword 2024-09-24

Crossword crossword puzzle
Across
  1. If the number of atoms of each element in reactants is not equal to the number of atoms of each element present in product.
  2. The process where a set of substances undergo a chemical change to form a different substance.
  3. When a chemical equation shows no mass was created or destroyed during the reaction.
  4. a unique form of matter with constant chemical composition and characteristic properties.
  5. the scientific study of the properties and behavior of matter.
  6. Term used for the elements and compounds after a chemical reaction takes place.
Down
  1. A substance made from two or more different elements that have been chemically joined.
  2. anything that has mass and takes up space
  3. Term used for the elements and compounds before a chemical reaction takes place.
  4. The basic particles of the chemical elements.

10 Clues: anything that has mass and takes up space • The basic particles of the chemical elements. • the scientific study of the properties and behavior of matter. • Term used for the elements and compounds after a chemical reaction takes place. • Term used for the elements and compounds before a chemical reaction takes place. • ...

Acid/Base Neutralization 2020-07-28

Acid/Base Neutralization crossword puzzle
Across
  1. The molecules resulting from the chemical reaction
  2. A substance with a pH above 7, accepts H+ ions and has hydroxide.
  3. A neutral liquid produced from a neutralization reaction
  4. the positively charged ion that acids can donate
  5. A type of neutral sodium chloride that is produced by a neutralization reaction.
  6. A solution in which water is the solvent that dissolves a solute.
  7. A reaction that breaks a larger molecule into smaller parts.
  8. A substance with a pH of 7 has a ______ pH.
  9. When molecules split into smaller pieces, such as ions, in water due to a greater attraction to the positive and negative charges of the water.
  10. A state of a molecule when it is dissolved in water.
  11. A positively or negatively charged atom or molecule.
Down
  1. A substance with a pH below 7, donates H+ ions.
  2. A reaction where an acid and a base react in an aqueous solution to create a salt and water.
  3. A type of reaction with two compounds that are typically ionic--either the cations or anions of both compounds switch.
  4. The molecules that undergo a chemical reaction
  5. A scale ranging from 1-14 that measures the H+ concentration in a substance. Substances under seven are acids, substances at seven are neutral, substances above seven are bases.
  6. The negatively charged ion that all bases contain
  7. A unit to measure of the H+ concentration in a substance. Each change in unit represents a tenfold change in the concentration of H+ ions. Acids have pHs below 7; bases have pHs above 7.
  8. The process of making a base and acid react with each other to reach pH 7.

19 Clues: A substance with a pH of 7 has a ______ pH. • The molecules that undergo a chemical reaction • A substance with a pH below 7, donates H+ ions. • the positively charged ion that acids can donate • The negatively charged ion that all bases contain • The molecules resulting from the chemical reaction • A state of a molecule when it is dissolved in water. • ...

Periodic table 2021-10-25

Periodic table crossword puzzle
Across
  1. - As 33
  2. - B 5
  3. - Sb 51
  4. - Cu 29
  5. - relating to an atom/s
  6. - Ar 18
  7. - I 53
  8. - O 8
  9. - U 92
  10. - involving or resulting from a reaction between two or more substances
  11. - Cl 17
  12. - a particle of matter that uniquely defines a chemical element
  13. - any substance that cannot be decomposed into simpler substances by ordinary chemical processes
Down
  1. - Br 35
  2. - a positive charge
  3. - a table of the chemical elements arranged in order of atomic number
  4. - the number of protons in the nucleus of an atom
  5. - Fe 26
  6. - the mass of an atom of a chemical element expressed in atomic mass units
  7. - a negative charge
  8. - a neutral charge
  9. - Li 3
  10. - Hg 80
  11. - He 2

24 Clues: - B 5 • - O 8 • - I 53 • - Li 3 • - U 92 • - He 2 • - Br 35 • - As 33 • - Sb 51 • - Fe 26 • - Cu 29 • - Ar 18 • - Hg 80 • - Cl 17 • - a neutral charge • - a positive charge • - a negative charge • - relating to an atom/s • - the number of protons in the nucleus of an atom • - a particle of matter that uniquely defines a chemical element • - a table of the chemical elements arranged in order of atomic number • ...

science698 2023-02-24

science698 crossword puzzle
Across
  1. Water chemical symbol
  2. pure substance made up of one type of atom and the material never changes.
  3. center of an atom
  4. has Neutral charge
  5. a group of atoms together
  6. has tree types of bonds Ionic bonding, covalent bonding metallic bonding.
  7. final result
  8. figure or chemical symbol
  9. what is the smallest particle that makes up everything.
  10. 2 Hydrogen and 1 Oxygen atom makes...
Down
  1. Force that holds atoms together in molecules/compounds.
  2. 2 or more atoms can combine to form new...
  3. a thong composed of multiple elements.
  4. has Negative charge
  5. a subject that changes during a reaction
  6. which one is a chemical symbol Oxygen or FE
  7. hydrogen chemical symbol
  8. has Positive charge
  9. which one is a molecule promethium or bioscience
  10. Oxygen chemical symbol

20 Clues: final result • center of an atom • has Neutral charge • has Negative charge • has Positive charge • Water chemical symbol • Oxygen chemical symbol • hydrogen chemical symbol • a group of atoms together • figure or chemical symbol • 2 Hydrogen and 1 Oxygen atom makes... • a thong composed of multiple elements. • a subject that changes during a reaction • ...

7.2 Types of Reactions 2022-03-29

7.2 Types of Reactions crossword puzzle
Across
  1. A chemical reaction in which two compounds exchange positive ions and form two new compounds
  2. A chemical reaction in which one element takes the place of another element in a compound
  3. A chemical reaction in which electrons are transferred from one reaction to another
Down
  1. A chemical reaction in which two or more substances react to form a single substance
  2. A chemical reaction in which a substance reacts rapidly with oxygen, often producing heat and light
  3. A chemical reaction in which a compound breaks down into two or more simpler substances
  4. a substance that undergoes change into products over time

7 Clues: a substance that undergoes change into products over time • A chemical reaction in which electrons are transferred from one reaction to another • A chemical reaction in which two or more substances react to form a single substance • A chemical reaction in which a compound breaks down into two or more simpler substances • ...

Honors Chemistry: Unit 1 2021-08-23

Honors Chemistry: Unit 1 crossword puzzle
Across
  1. irreversible chemical reaction involving the rearrangement of the atoms of one or more substances
  2. anything that has mass and takes up space
  3. chemical property that outlines the type of matter in a substance
  4. a measurement of resistance to change for a body of matter.
  5. any property that is observable and can be measured
Down
  1. most basic unit of matter
  2. a state of matter with a definite shape and volume.
  3. a pure substance consisting only of atoms that all have the same numbers of protons
  4. changes affecting the form of a chemical substance, but not its chemical composition.
  5. chemical property that outlines the amount of matter in a substance
  6. state of matter in which molecules move around freely but still experience attractive forces
  7. a characteristic of a particular substance that can be observed in a chemical reaction.
  8. the study of composition
  9. state of matter consisting of particles that have neither a defined volume nor defined shape.

14 Clues: the study of composition • most basic unit of matter • anything that has mass and takes up space • a state of matter with a definite shape and volume. • any property that is observable and can be measured • a measurement of resistance to change for a body of matter. • chemical property that outlines the type of matter in a substance • ...

Chemical Reactions 2024-03-04

Chemical Reactions crossword puzzle
Across
  1. group 18 on the periodic table
  2. atoms exchange or share electrons in order to produce a noble gas electron configuration for each element involved
  3. have properties similar to both metals and nonmetals
  4. one of the two products of hydrocarbon combustion
  5. atoms of the same element with different numbers of neutrons
  6. type of bond involving a transfer of electrons
  7. atomic number 79
  8. the smallest whole number ratio of the different atoms in a compound
  9. one of the two products of a hydrocarbon combustion
  10. reaction analogous to "cutting in" on the dance floor
  11. group 1 on the periodic table
  12. type of bond where electrons are shared between two atoms
  13. they represent electrons in orbital diagrams
  14. units of molar mass
  15. reaction where oxygen gas is a reactant
  16. the Greek letter used to show that a reaction is heated
  17. dissolved in water
  18. the outermost electrons of an atom
  19. it speeds up a reaction but is not used up
  20. molecular geometry shape where four atoms are bonded to a central atom
  21. group 2 on the periodic table
  22. reverse of a decomposition reaction
  23. used to determine if Au + NaCl will go
Down
  1. an atoms ability to attract electrons from another atom in a bond
  2. CaS
  3. nitrogen, oxygen, hydrogen, and the halogens
  4. abbreviations for Valence Shell Electron Pair Repulsion
  5. atoms are neither created nor destroyed in a chemical reaction
  6. area of high probability of finding an electron
  7. a solid that separates out of solution in a reaction
  8. charge of silver metal
  9. shows locations of electrons with boxes and arrows
  10. group 2, period 3
  11. elements that contain only one atom in their elemental state
  12. the number of sulfur atoms in elemental sulfur
  13. numbers added before chemical formulas in a reaction to balance it
  14. hydrogen bonds, London dispersion forces, or dipole dipole interactions
  15. 6.022 times 10 to the 23rd
  16. type of reaction that gives off heat
  17. type of reaction when sodium chloride reacts with silver nitrate
  18. evidence of gas formation in a reaction
  19. horizontal rows in the periodic table
  20. abbreviation for a solid that crashes out of solution

43 Clues: CaS • atomic number 79 • group 2, period 3 • dissolved in water • units of molar mass • charge of silver metal • 6.022 times 10 to the 23rd • group 1 on the periodic table • group 2 on the periodic table • group 18 on the periodic table • the outermost electrons of an atom • reverse of a decomposition reaction • type of reaction that gives off heat • ...

Unit 2 Biology Vocabulary 2021-09-29

Unit 2 Biology Vocabulary crossword puzzle
Across
  1. substance that speeds up the rate of a chemical reaction
  2. the average mass of an atom of an element, usually expressed in atomic mass units; also referred to as mass number
  3. small chemical unit that makes up a polymer
  4. electrons that can be actively involved in chemical change; outer shell electrons
  5. reactant of an enzyme-catalyzed reaction
  6. macromolecules containing hydrogen, oxygen, nitrogen, carbon, and phosphorus
  7. the breaking down in living organisms of more complex substances into simpler ones, with the release of energy
  8. type of bond between atoms in which the electrons are shared
  9. compound made up of carbon, hydrogen, and oxygen atoms; type of nutrient that is the major source of energy for the body
  10. the center of an atom, which contains the protons and neutrons
  11. smallest unit of most compounds that displays all the properties of that compound
  12. compound with an amino group on one end and a carboxyl group on the other end
  13. elements or compounds produced by a chemical reaction
  14. substance formed by the chemical combination of two or more elements in definite proportions
  15. the basic unit of matter
  16. an arrangement of the elements in order of atomic number with similar elements falling into columns
  17. negatively charged particle; located in the space surrounding the nucleus
  18. covalent bond formed between two amino acids
  19. the synthesis in living organisms of more complex substances from simpler ones
  20. a carbohydrate whose molecules consist of a number of sugar molecules bonded together
  21. simple sugar molecule
Down
  1. macromolecule that contains carbon, hydrogen, oxygen, and nitrogen; needed by the body for growth and repair
  2. process that changes, or transforms, one set of chemicals into another set of chemicals
  3. a compound that contains hydrocarbons, often associated with living things
  4. atom that has a positive or negative charge
  5. the combination of many small molecules to form large molecules
  6. protein catalyst that speeds up the rate of specific biological reactions
  7. subunit of which nucleic acids are composed; made up of a 5-carbon sugar, a phosphate group, and a nitrogenous base
  8. a link between atoms
  9. slight attraction that develops between oppositely charged regions of nearby molecules
  10. pure substance that consists entirely of one type of atom
  11. any substance that is composed of two molecules of simple sugars linked to each other
  12. hydrocarbons that contain only single bonds
  13. hydrocarbons that contain double or triple carbon-carbon bonds
  14. chemical bond formed when one or more electrons are transferred from one atom to another
  15. molecules composed of many monomers; makes up macromolecules
  16. elements or compounds that enter into a chemical reaction
  17. macromolecule made mostly from carbon and hydrogen atoms; includes fats, oils, and waxes
  18. energy that is needed to get a reaction started
  19. the number of protons in an atomic nucleus

40 Clues: a link between atoms • simple sugar molecule • the basic unit of matter • reactant of an enzyme-catalyzed reaction • the number of protons in an atomic nucleus • atom that has a positive or negative charge • small chemical unit that makes up a polymer • hydrocarbons that contain only single bonds • covalent bond formed between two amino acids • ...

Chapter 2 Key Terms 2023-09-24

Chapter 2 Key Terms crossword puzzle
Across
  1. The building block of matter; the smallest possible particle of an element
  2. Quality of molecules having an uneven distribution of electrical charge, resulting in some regions of a molecule having negative charge while others are positive.
  3. A substance that can produce hydrogen ions (H+) in solution.
  4. change in a substance that results in one or more new substances being formed that have different physical and chemical properties than those of the original substance.
  5. A class of nonpolar organic compounds that are insoluble in water and are used for energy storage and cell membranes in living things.
  6. A measurement of the average speed of the particles within a substance.
  7. The attraction of particles in one substance for particles in a different substance.
  8. A covalently bonded compound containing the element carbon.
  9. change in a substance that does not change to identity of the substance.
  10. The process by which one substance, the solute, is broken up into smaller pieces by and distributed within a second substance, the solvent.
  11. A pure substance made of only one kind of atom
  12. An attraction between two atoms as a result of sharing or transferring valence electrons.
  13. The physical things that make up the universe or anything that occupies space and has mass.
  14. The process by which particles in solution are evenly distributed throughout the solvent by Brownian motion.
  15. A class of organic compounds that serve as the building blocks for the information storage molecules DNA and RNA.
Down
  1. A class of organic compounds that serve as the building blocks of proteins.
  2. An organic compound comprised of the elements carbon, hydrogen, and oxygen; includes sugars, starch, and cellulose.
  3. The smallest particle of a covalently bonded compound.
  4. A substance that binds to an enzyme and reduces its activity, thus slowing a chemical reaction that the enzyme catalyzes.
  5. The attraction between like particles within polar substances.
  6. A substance that changes the rate of a chemical reaction but is not itself used up or affected by the reaction.
  7. A substance that is present before a chemical reaction and takes part in it, usually shown on the left-hand side of a chemical equation.
  8. Change-
  9. A naturally occurring catalyst, usually a protein.
  10. A pure substance made from two or more elements that are chemically combined.
  11. The ability to do work.
  12. A substance that can produce hydroxide ions (OH-) or accept hydrogen ions (H+) in solution.
  13. The substances formed during a chemical reaction, usually indicated on the right-hand side of the chemical equation.
  14. The tendency of energy to disperse and become less available to do work.
  15. A class of simple organic compounds important in living things as a source of both energy and structure.

30 Clues: Change- • The ability to do work. • A pure substance made of only one kind of atom • A naturally occurring catalyst, usually a protein. • The smallest particle of a covalently bonded compound. • A covalently bonded compound containing the element carbon. • A substance that can produce hydrogen ions (H+) in solution. • ...

Chapter 8 EC #2 2021-03-22

Chapter 8 EC #2 crossword puzzle
Across
  1. The principle stating that every energy transfer or transformation increases the entropy of the universe.
  2. A substance that reduces the activity of an enzyme by entering the active site in place of the substrate, whose structure it mimics.
  3. An organic molecule serving as a cofactor
  4. The principle of conservation of energy: Energy can be transferred and transformed, but it cannot be created or destroyed.
  5. The energy associated with the relative motion of objects.
Down
  1. The totality of an organism's chemical reactions, consisting of catabolic and anabolic pathways, which manage the material and energy resources of the organism.
  2. The portion of a biological system's energy that can perform work when temperature and pressure are uniform throughout the system.
  3. A kind of allosteric regulation whereby a shape change in one subunit of a protein caused by substrate binding is transmitted to all the other subunits
  4. A series of chemical reactions that either builds a complex molecule or breaks down a complex molecule into simpler molecules
  5. A molecule (often a reactant) with a phosphate group covalently bound to it, making it more reactive (less stable) than the unphosphorylated molecule.
  6. A spontaneous chemical reaction in which there is a net release of free energy
  7. A nonspontaneous chemical reaction in which free energy is absorbed from the surroundings.
  8. The study of energy transformations that occur in a collection of matter
  9. A process by which a chemical agent called a catalyst selectively increases the rate of a reaction without being consumed by the reaction.

14 Clues: An organic molecule serving as a cofactor • The energy associated with the relative motion of objects. • The study of energy transformations that occur in a collection of matter • A spontaneous chemical reaction in which there is a net release of free energy • A nonspontaneous chemical reaction in which free energy is absorbed from the surroundings. • ...

Balancing Equations 2013-04-08

Balancing Equations crossword puzzle
Across
  1. state of matter represented by "l" in a chemical equation
  2. state of matter represented by "s" in a chemical equation
  3. what is made during a chemical equation. Is located to the right of the equation
  4. speeds up a chemical reaction without being used up or changed
  5. an equation in which the amount of the products and reactants are equal
  6. what starts a chemical reaction. Located to the left of the chemical equation
  7. the total mass of a compound. Found by using a periodic table
Down
  1. mass is neither created nor destroyed. What you start with in an equation you will end with
  2. whole number placed in front of a compound to balance a chemical equation
  3. an equation in which the amount of the products and reactants are not equal
  4. represented by an arrow to show what is made
  5. state of matter represented by a "g" in a chemical equation

12 Clues: represented by an arrow to show what is made • state of matter represented by "l" in a chemical equation • state of matter represented by "s" in a chemical equation • state of matter represented by a "g" in a chemical equation • the total mass of a compound. Found by using a periodic table • speeds up a chemical reaction without being used up or changed • ...

The Chemical Vocab 2025-09-18

The Chemical Vocab crossword puzzle
Across
  1. A chemical bond formed when two atoms share pairs of electrons.
  2. A weak attraction between a slightly positive hydrogen atom in one molecule and a slightly negative atom in another.
  3. A molecule made of amino acids that is needed for the body to function properly.
  4. A substance that increases the rate of a chemical reaction without being consumed by the reaction.
  5. The building blocks that combine to form proteins.
  6. A waxy, fat-like substance made by the liver that is essential for cell function.
  7. The basic building block of all matter, composed of protons, neutrons, and electrons.
  8. A large molecule, such as DNA or RNA, that carries genetic information.
  9. Fatty, oily, or waxy compounds that are insoluble in water and store energy.
  10. A substance made from two or more different elements that are chemically bonded.
  11. In chemistry, a compound that contains carbon-hydrogen bonds.
  12. A property of a molecule that repels water.
  13. A protein that acts as a catalyst to speed up specific chemical reactions in the body.
  14. A particle with a positive electrical charge located in an atom's nucleus.
  15. A chemical bond formed by the electrical attraction between oppositely charged ions.
  16. A substance that accepts hydrogen ions and has a pH greater than 7.
  17. A large carbohydrate molecule composed of many monosaccharide units joined together.
  18. A particle found in an atom's nucleus that has no electrical charge.
  19. A very large molecule, such as a protein or nucleic acid, that is built from smaller units.
Down
  1. The simplest form of a carbohydrate, or a "simple sugar".
  2. shell An orbital path or energy level that electrons follow around an atom's nucleus.
  3. A property of a molecule that is attracted to and dissolves in water.
  4. The minimum amount of energy required to start a chemical reaction.
  5. An atom or molecule that has a net positive or negative electrical charge.
  6. substance that donates hydrogen ions and has a pH less than 7.
  7. A variant of a chemical element with the same number of protons but a different number of neutrons.
  8. A particle with a negative electrical charge that orbits an atom's nucleus in shells.
  9. Sugar molecules that serve as the body's main source of energy.
  10. A molecule that is the basic building block of DNA and RNA.
  11. A process where substances rearrange their atoms to form new substances with different properties.
  12. A chemical bond that links two amino acids together.
  13. The molecule that an enzyme acts upon in a chemical reaction.
  14. A pure substance made of only one type of atom that cannot be broken down chemically.
  15. A measure of how acidic or basic a substance is, ranging from 0 to 14.
  16. Two or more atoms bonded together.

35 Clues: Two or more atoms bonded together. • A property of a molecule that repels water. • The building blocks that combine to form proteins. • A chemical bond that links two amino acids together. • The simplest form of a carbohydrate, or a "simple sugar". • A molecule that is the basic building block of DNA and RNA. • ...

Chemistry Unit 5 Vocabulary 2024-12-08

Chemistry Unit 5 Vocabulary crossword puzzle
Across
  1. What's formed as the result of the reaction. The substance(s) to the right of the arrow in a chemical equation. Is there at the end of the chemical reaction.
  2. A number below a number. We cannot change them. It is the number of atoms an element has. Be₄
  3. A substance that has identical molecules with atoms with two or more chemical elements. H₂O is a compound.
  4. Switches places with another element that is in a compound. Cl2(aq) + 2NaBr(aq) → 2NaCl(aq) + Br2(aq)
  5. A molecule that has two atoms in its element. H₂
  6. Hydrocarbon reacting with oxygen that releases carbon dioxide, heat and water. 2H₂(g)+O₂(g)→2H₂O(g)
Down
  1. When one reactant breaks down into multiple, simpler products. ClNa→Cl+Na
  2. Two reacting compounds that switch their bond buddy. AgNo₃+NaCl→AgCl+NaNO₃
  3. A number placed in front of chemical formulas that is the number of molecules Combination Two or more elements that combine to make one product. Can also be called synthesis. 2CO(g)+O₂(g)→2CO₂(g)
  4. A metal and a nonmetal bonded together chemically. NaF
  5. A nonmetal and nonmetal bonded together chemically. N₂O₃
  6. A substance that is changing during a reaction. The substance(s) to the left of the arrow in a chemical equation. Is there at the start of the chemical reaction.
  7. An atom or molecule. When positively charged they are cations, and when negatively charged they are anions. (Na+) (O₂-)

13 Clues: A molecule that has two atoms in its element. H₂ • A metal and a nonmetal bonded together chemically. NaF • A nonmetal and nonmetal bonded together chemically. N₂O₃ • When one reactant breaks down into multiple, simpler products. ClNa→Cl+Na • Two reacting compounds that switch their bond buddy. AgNo₃+NaCl→AgCl+NaNO₃ • ...

Law of Conservation of Mass 2024-10-09

Law of Conservation of Mass crossword puzzle
Across
  1. If the reactants add up to five grams, the products must add up to __ grams.
  2. The ___of Conservation of Mass states that all matter is conserved in a reaction
  3. the things on the right side of the chemical equation
  4. Water breaking down into hydrogen and oxygen is a __ change.
  5. The Law of ___ of Mass states that all atoms in must equal all atoms out
  6. the things on the left side of the chemical equation
  7. Mass is usually measured in __ or kilograms.
Down
  1. number in front of a chemical formula, like the 2 in 2NaCl
  2. If an equation is ___, the number of atoms on each side is unequal.
  3. the measure of how many atoms are in something
  4. In __ systems, gas could escape.
  5. A __ equation has the same number of atoms on each side.
  6. Water boiling is a ___ change, because it is still H2O.
  7. In __ systems, no atoms can escape from the reaction.
  8. In chemical reactions, ___ break and new ones form between electrons.

15 Clues: In __ systems, gas could escape. • Mass is usually measured in __ or kilograms. • the measure of how many atoms are in something • the things on the left side of the chemical equation • the things on the right side of the chemical equation • In __ systems, no atoms can escape from the reaction. • Water boiling is a ___ change, because it is still H2O. • ...

Chemical Reactions and Equations-Hrishikesh Prem 2024-04-30

Chemical Reactions and Equations-Hrishikesh Prem crossword puzzle
Across
  1. Substances which prevent rancidity
  2. Color of silver after Tarnishing
  3. Any reaction which produces a precipitation
  4. Chemical Name of Rust
  5. When a more reactive element displaces another less reactive element to form a new compund
  6. Solution which turns milky after reaction with Carbon Dioxide
  7. Reaction where a compound breaks down in presence of sunlight
  8. Element which loses hydrogen or gains oxygen
Down
  1. When 2 compounds exchange ions
  2. Reaction in which both oxidising and reducing takes please
  3. known as slaked lime
  4. Reaction where compound breaks down in presence of heat
  5. Brown fumes produced by decomposition of lead nitrate
  6. Color of compund formed after reaction between Copper and moist air
  7. Also known as Limestone
  8. When 2 or more elements combine to form a compoudn

16 Clues: known as slaked lime • Chemical Name of Rust • Also known as Limestone • When 2 compounds exchange ions • Color of silver after Tarnishing • Substances which prevent rancidity • Any reaction which produces a precipitation • Element which loses hydrogen or gains oxygen • When 2 or more elements combine to form a compoudn • Brown fumes produced by decomposition of lead nitrate • ...

Photosynthesis Vocab 2025-01-30

Photosynthesis Vocab crossword puzzle
Across
  1. cell cells that control the opening and closing of stoma
  2. green pigment in chloroplast that is used for photosynthesis
  3. change one or more molecules into another molecules
  4. organelle where photosynthesis takes place
  5. opening in leaves that controls gas exchange
  6. energy given off by the sun that plants collect
  7. energy stored in chemical bonds
Down
  1. process that plants use to turn sunlight into energy
  2. part of the cell that performs a specific job
  3. tubes that carries sugar through plants
  4. a type of sugar made by plants
  5. cell a eukaryotic cell that contains chloroplast and a cell wall
  6. the substance you start with for a chemical reaction
  7. tube that carries water through plants
  8. what is made by a chemical reaction

15 Clues: a type of sugar made by plants • energy stored in chemical bonds • what is made by a chemical reaction • tube that carries water through plants • tubes that carries sugar through plants • organelle where photosynthesis takes place • opening in leaves that controls gas exchange • part of the cell that performs a specific job • ...

Year 10 science revision 2021-05-12

Year 10 science revision crossword puzzle
Across
  1. a change in a substance that does not change the identify of the substance
  2. positively charged particle
  3. a change in a substance that results in a new substance being formed
  4. increasing the dissolved reactants increases the ...
  5. a quick reaction
  6. the rate of reaction depends on the ______________ of collisions between particles
  7. a substance that lowers the reactions activation energy so speeds up the reaction
Down
  1. the minimum amount of energy needed for the particles to react
  2. the type of reaction where a molecule breaks down to make simpler ones
  3. a solid that forms
  4. the type of reaction where two or more compounds combine to form one compound
  5. the speed of a reaction
  6. negatively charged ion
  7. charge on a ionic compound
  8. the smaller the pieces of reactant the ______________ the surface area
  9. substances that are formed in a chemical reaction
  10. a substance that is made of two or more elements bonded together
  11. the measure of how well one substance dissolves in another
  12. by increasing this the particles have more energy so they collide more

19 Clues: a quick reaction • a solid that forms • negatively charged ion • the speed of a reaction • charge on a ionic compound • positively charged particle • substances that are formed in a chemical reaction • increasing the dissolved reactants increases the ... • the measure of how well one substance dissolves in another • ...

CHEMISTRY CROSSWORD 2024-08-23

CHEMISTRY CROSSWORD crossword puzzle
Across
  1. Anything which occupies space and has mass
  2. The gaseous form of a solid
  3. The term used for a particular kind of matter
  4. The outermost shell
  5. The smallest particle of an element
  6. The new substances formed as a result of a chemical reaction
  7. The positively charged ions
  8. The number of protons in the nucleus of an atom
  9. Short form of an Element
  10. Combining capacity of an elemeny
Down
  1. A pure substance which cannot be broken into two or more substances by any known physical and chemical means
  2. Solid State formed from the gaseous state on cooling
  3. The substances which take part in a chemical reaction
  4. The negatively charged ions
  5. The number of protons and neutrons in the nucleus of an atom

15 Clues: The outermost shell • Short form of an Element • The gaseous form of a solid • The negatively charged ions • The positively charged ions • Combining capacity of an elemeny • The smallest particle of an element • Anything which occupies space and has mass • The term used for a particular kind of matter • The number of protons in the nucleus of an atom • ...

Chapter 8 (Puzzle #2) 2021-03-23

Chapter 8 (Puzzle #2) crossword puzzle
Across
  1. a substance that reduces the activity of an enzyme by binding to a location remote from the active site, changing the enzyme's shape so that the active site no longer effectively catalyze the conversion of substrate to product
  2. a temporary complex formed when an enzyme binds to its substrate molecule(s)
  3. the amount of energy that reactants must absorb before a chemical reaction will start; also called free energy of activation
  4. a process by which a chemical agent called a catalyst to selectively increases the rate of a reaction without being consumed by the reaction
  5. the binding of a regulatory molecule to a protein at one site that affects the function of the protein at a different site
  6. caused by entry of the substrate, the change in shape of the active site of an enzyme so that it binds more snugly to the substrate
  7. an organic molecule serving as a cofactor. Most vitamins function as coenzymes in the metabolic reactions
Down
  1. a substance that reduces the activity of an enzyme by entering the active site in place of the substrate, whose structure it mimics
  2. a method of metabolic control in which the end product of a metabolic pathway acts as an inhibitor of an enzyme within that pathway
  3. the specific region of an enzyme that binds to the substrate and that forms the pocket in which catalysis occurs
  4. the reactant on which an enzyme works
  5. a macromolecule serving as a catalyst, a chemical agent that increases the rate of a reaction without being consumed by the reaction. most enzymes are proteins
  6. a chemical agent that selectively increases the rate of a reaction without being consumed by the reaction

13 Clues: the reactant on which an enzyme works • a temporary complex formed when an enzyme binds to its substrate molecule(s) • a chemical agent that selectively increases the rate of a reaction without being consumed by the reaction • an organic molecule serving as a cofactor. Most vitamins function as coenzymes in the metabolic reactions • ...

Physical and Chemical Changes 2018-09-03

Physical and Chemical Changes crossword puzzle
Across
  1. a physical property that does not depend on the amount of matter present
  2. change chemical reaction that takes place when two or more substances interact to form a new substance or substances.
  3. change change that does not alter the chemical properties of a substance.
  4. materials that enter into a chemical reaction.
Down
  1. materials that form as the result of a chemical reaction
  2. physical property that depends on the amount of matter present
  3. chemical change that takes place when two or more substances interact to form new substances with new properties.
  4. occurs when oxygen reacts with some other substance

8 Clues: materials that enter into a chemical reaction. • occurs when oxygen reacts with some other substance • materials that form as the result of a chemical reaction • physical property that depends on the amount of matter present • a physical property that does not depend on the amount of matter present • ...

science 2016-12-14

science crossword puzzle
Across
  1. / Non-metals in group 17 in the periodic table, fluorine,chlorine, bromine and iodine.
  2. / Positively charged centre of the atom made up of protons and neutrons.
  3. / The element in group 8 and period 4.
  4. / The third most abundant element in the cosmos,after hydrogen and helious.
  5. / A soft, silver-white metal belonging to the alkali metal group of chemical element.
  6. / The first of the synthetic element.
  7. / Charged particle made up of several non metallic atoms joined together.
  8. /_____for removing and holding a hot beaker.
  9. / ____are used to pick up small object.
  10. / Compound produced in a neutralization reaction between an acid and a base.
  11. / ....mixture is one that has uniform composition and the same properties throughout the mixture.
  12. / Ability of a substance to conduct heat,sound or electricity.
  13. / Determined without destroying matter.
  14. / an alkaline battery.
  15. / Type of bond formed when electrons transfer between metals and non-metals.
  16. / The largest naturally occuring element.
Down
  1. / A substance that cannot be broken down into simpler components by any non-nuclear chemical reaction.
  2. / Poor conductor of heat.
  3. / an posotively charged ion.
  4. / The element that has atomic number 32.
  5. / Unreactive with all, but the most corrosive of acids.
  6. / The element in group 3 to 12 are referred to as ...
  7. / ____ is pH changes very little when a small amount of strong acid or base is added to it.
  8. / an element is defined by the nucleon number, which is the sum of the number of protons and the number of neutrons in the atomic nucleus.
  9. / substances that, in aqueous solution, are slippery to the touch, taste astringent, change the color of indicators (e.g., turn red litmus paper blue),
  10. / Chemical reaction in which an acid and a bases react quantitatively with each other.
  11. / Chemical combination of two or more elements.
  12. / ____is any chemical element which has properties between those of metal and non-metal.
  13. / A change in the physical and chemical properties.
  14. / a subatomic particle with a positive electric charge of +1e.

30 Clues: / an alkaline battery. • / Poor conductor of heat. • / an posotively charged ion. • / The first of the synthetic element. • / The element in group 8 and period 4. • / ____are used to pick up small object. • / Determined without destroying matter. • / The element that has atomic number 32. • / The largest naturally occuring element. • ...

science 2016-12-14

science crossword puzzle
Across
  1. / Non-metals in group 17 in the periodic table, fluorine,chlorine, bromine and iodine.
  2. / The element in group 8 and period 4.
  3. / A soft, silver-white metal belonging to the alkali metal group of chemical element.
  4. / ____are used to pick up small object.
  5. / Chemical combination of two or more elements.
  6. / The largest naturally occuring element.
  7. / Compound produced in a neutralization reaction between an acid and a base.
  8. / Unreactive with all, but the most corrosive of acids.
  9. / The element in group 3 to 12 are referred to as ...
  10. / Chemical reaction in which an acid and a bases react quantitatively with each other.
  11. / The element that has atomic number 32.
  12. / The third most abundant element in the cosmos,after hydrogen and helious.
  13. / Determined without destroying matter.
  14. / The first of the synthetic element.
  15. / ____ is pH changes very little when a small amount of strong acid or base is added to it.
  16. / ....mixture is one that has uniform composition and the same properties throughout the mixture.
  17. / substances that, in aqueous solution, are slippery to the touch, taste astringent, change the color of indicators (e.g., turn red litmus paper blue),
Down
  1. / Positively charged centre of the atom made up of protons and neutrons.
  2. / an element is defined by the nucleon number, which is the sum of the number of protons and the number of neutrons in the atomic nucleus.
  3. / A change in the physical and chemical properties.
  4. /_____for removing and holding a hot beaker.
  5. / ____is any chemical element which has properties between those of metal and non-metal.
  6. / a subatomic particle with a positive electric charge of +1e.
  7. / Ability of a substance to conduct heat,sound or electricity.
  8. / an posotively charged ion.
  9. / an alkaline battery.
  10. / Charged particle made up of several non metallic atoms joined together.
  11. / Poor conductor of heat.
  12. / Type of bond formed when electrons transfer between metals and non-metals.
  13. / A substance that cannot be broken down into simpler components by any non-nuclear chemical reaction.

30 Clues: / an alkaline battery. • / Poor conductor of heat. • / an posotively charged ion. • / The first of the synthetic element. • / The element in group 8 and period 4. • / ____are used to pick up small object. • / Determined without destroying matter. • / The element that has atomic number 32. • / The largest naturally occuring element. • ...

chemistry project 2022-05-19

chemistry project crossword puzzle
Across
  1. Research is generally carried out to solve a
  2. knowledge.
  3. wavelike behavior as it travels through
  4. Research is carried out for the sake of
  5. is the ability of a substance to be
  6. chemical bonding that results from the attraction
  7. all the forms of electromagnetic radiation
  8. the electromagnetic spectrum.
  9. formula is the actual formula of a molecular compound.
  10. mechanics, chemical compositions and
  11. or extruded through a small opening to
  12. compound is composed of positive and
  13. processes.
  14. ions that are combined so that the numbers of positive and negative charges are equal.
  15. is an equation in which the reactants and products in a chemical reaction are represented by words.
  16. Periodic Table is an arrangement of the
  17. properties of matter, the processes that matter
  18. found in an athlete’s urine sample
  19. in order of their atomic numbers so that
  20. is any substance that has a definite
  21. much caffeine is in a cup of coffee, are there
  22. metal atoms and the surrounding sea of
  23. is the study of the composition, structure,
  24. and composition of materials
Down
  1. chemistry—the study of the properties and
  2. chemistry—the identification of the
  3. is defined as the number of waves that
  4. is called metallic bonding.
  5. ratio is a conversion factor that relates the amounts in moles of any two substances involved in a chemical reaction
  6. is the smallest particle of an element that
  7. a wire.
  8. or beaten into thin sheets.
  9. is the ability of a substance to be drawn,
  10. a given point in a specific time, usually one
  11. and the energy changes that accompany
  12. points on adjacent waves.
  13. reactant is the reactant that limits the amount of the other reactant that can combine and the amount of product that can form in a chemical reaction.
  14. the chemical properties of that element.
  15. zero mass and carrying a quantum of
  16. radiation is a form of energy that
  17. is the distance between
  18. or group.
  19. of matter and their relation to energy
  20. with similar properties fall in the same

44 Clues: a wire. • or group. • knowledge. • processes. • is the distance between • points on adjacent waves. • is called metallic bonding. • or beaten into thin sheets. • and composition of materials • the electromagnetic spectrum. • radiation is a form of energy that • found in an athlete’s urine sample • chemistry—the identification of the • is the ability of a substance to be • ...

Photosynthesis - 7th Grade 2024-01-23

Photosynthesis - 7th Grade crossword puzzle
Across
  1. Smallest particle of an element
  2. The process where a plant makes sugar and oxygen from carbon dioxide, water and sunlight
  3. Scientific word for sugar
  4. Energy stored in bonds
  5. What living things breath out
Down
  1. A substance that takes part in and undergoes change during a chemical reaction
  2. The simplest unit of a chemical compound that can exsist
  3. A substance produced during a chemical reaction
  4. Radiant energy from the sun
  5. What living beings need to breath in and is made by plants
  6. How animals get their glucose or sugar

11 Clues: Energy stored in bonds • Scientific word for sugar • Radiant energy from the sun • What living things breath out • Smallest particle of an element • How animals get their glucose or sugar • A substance produced during a chemical reaction • The simplest unit of a chemical compound that can exsist • What living beings need to breath in and is made by plants • ...

Cailey Flynn 2019-06-12

Cailey Flynn crossword puzzle
Across
  1. the smallest type of matter
  2. NH3->N2+ H2
  3. Energy level that is divided into smaller orbits
  4. diagrams that show the bonding between atoms of a molecule and the lone pairs of electrons that may exist in the molecule
  5. the distribution of electrons of an atom or molecule
  6. A carbon based compound that reacts with oxygen to form cardon-dixoide (co2) and water (products)
  7. chemical bond that involves the sharing of electron pairs between atoms
  8. How atoms combine to form compounds
  9. Atoms give away or accept electrons to become positive (happy)
  10. the data collected
  11. a chemical substance composed of many identical molecules composed of atoms from more than one element
  12. show you how many of each molecules there is
  13. Al+H2SO4-> Al2(SO4)3+H2
  14. The symbol (aq) indicates a substance is dissolved in
  15. electric charge is negative
Down
  1. The "stuff" you make in a chemical equation
  2. point temperature at which it changes state from solid to liquid
  3. an atom or molecule that has a net electrical charge
  4. a representation of a chemical reaction
  5. The "stuff" you start with in a chemical equation
  6. a solution in which the solvent is water
  7. The number of atoms for each element in the chemical equation
  8. AB+CD-> AD+CB
  9. atoms give away or accept electrons
  10. an outer shell electron that is associated with an atom
  11. symbol that separates the reactants from the products of the chemical reaction - Arrow
  12. a negatively charged ion
  13. Two or more substances (Reactants) combine to form a single substance (Products)
  14. Positively (+) charged ions, more protons than electrons
  15. display of the chemical elements

30 Clues: NH3->N2+ H2 • AB+CD-> AD+CB • the data collected • Al+H2SO4-> Al2(SO4)3+H2 • a negatively charged ion • the smallest type of matter • electric charge is negative • display of the chemical elements • atoms give away or accept electrons • How atoms combine to form compounds • a representation of a chemical reaction • a solution in which the solvent is water • ...

Water/Enzyme Vocab 2021-09-30

Water/Enzyme Vocab crossword puzzle
Across
  1. a substance capable of reacting with an acid to form a salt and water of accepting or neutralizing hydrogen ions
  2. a molecule or other entity that can donate a proton or accept an electron pair in reactions
  3. the minor component in a solution, dissolved in the solvent
  4. a substance produced by a living organism which acts as a catalyst to bring about a specific biochemical reaction.
  5. a region on an enzyme that binds to a protein or other substance during a reaction.
  6. a substance produced during a natural, chemical, or manufacturing process
  7. a substance capable of reacting with an acid to form a salt and water of accepting or neutralizing hydrogen ions
  8. a process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction.
  9. a solution that resists changes in pH when acid or alkali is added to it
  10. the surface or material on or from which an organism lives, grows, or obtains its nourishment.
  11. able to dissolve other substances.
Down
  1. A molecule in which one end is slightly positive and the other is slightly negative
  2. a substance made by mixing other substances together
  3. the minimum quantity of energy which the reacting species must possess in order to undergo a specified reaction.
  4. a weak bond between two molecules resulting from an electrostatic attraction
  5. a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.
  6. a liquid mixture in which the minor component (the solute) is uniformly distributed within the major component (the solvent).

17 Clues: able to dissolve other substances. • a substance made by mixing other substances together • the minor component in a solution, dissolved in the solvent • a solution that resists changes in pH when acid or alkali is added to it • a substance produced during a natural, chemical, or manufacturing process • ...

water/enzymes 2021-10-07

water/enzymes crossword puzzle
Across
  1. site, a region on an enzyme that binds to a protein or other substance during a reaction
  2. substance that acts as a catalyst in living organisms
  3. a solution that resists changes in pH when acid or alkali is added to it. Buffers typically involve a weak acid or alkali together with one of its salts
  4. a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change
  5. bond, primarily electrostatic force of attraction between a hydrogen atom which is covalently bound to a more electronegative atom or group
  6. able to dissolve other substances
  7. energy, the minimum quantity of energy which the reacting species must possess in order to undergo a specified reaction
  8. scale used to specify the acidity or basicity of an aqueous solution
  9. a liquid mixture in which the minor component (the solute) is uniformly distributed within the major component
Down
  1. a substance made by mixing other substances together
  2. reaction, a process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction
  3. the substance on which an enzyme acts
  4. the minor component in a solution, dissolved in the solvent
  5. molecule or ion capable of either donating a proton
  6. a thing or person that is the result of an action or process
  7. molecule, a molecule in which one end of the molecule is slightly positive, while the other end is slightly negative

16 Clues: able to dissolve other substances • the substance on which an enzyme acts • molecule or ion capable of either donating a proton • a substance made by mixing other substances together • substance that acts as a catalyst in living organisms • the minor component in a solution, dissolved in the solvent • a thing or person that is the result of an action or process • ...

Lesson 4-6 Quiz Review 2024-02-07

Lesson 4-6 Quiz Review crossword puzzle
Across
  1. The ingredient in gasoline that determines the grade of gasoline you buy at the gas station.
  2. Unit of mass in the metric system.
  3. The charge that the valence electrons "feel" due to the number of protons in the nucleus and the number of electrons in the inner shells of the atom.
  4. A counting unit that tells you how many atoms or molecules you have in a given situation.
  5. A type of chemical reaction in which energy is released to the environment.
Down
  1. Prefix for 1000 in the metric system.
  2. Term used to describe the size (or radius) of an atom.
  3. A type of chemical reaction in which energy is absorbed from the environment.
  4. Unit of energy in the metric system.
  5. The type of electrons that are either shared or transferred in all chemical reactions.
  6. The process in which inner electrons shield outer electrons from the positive charge of the atom's nucleus.
  7. The gas/element that makes up rocket fuel.
  8. The total energy (or heat H) of a system (or chemical reaction).

13 Clues: Unit of mass in the metric system. • Unit of energy in the metric system. • Prefix for 1000 in the metric system. • The gas/element that makes up rocket fuel. • Term used to describe the size (or radius) of an atom. • The total energy (or heat H) of a system (or chemical reaction). • A type of chemical reaction in which energy is released to the environment. • ...

Chemical Reactions - amplify 2023-03-14

Chemical Reactions - amplify crossword puzzle
Across
  1. chemical _______ - letters and numbers showing the types and number of atoms that repeat to make up a substance
  2. something that is made of all the same atoms or groups of atoms
  3. able to cause damage
  4. the temperature at which a substance changes from the liquid phase to the gas phase
  5. a structure formed by repeating groups of atoms linked together in a large
  6. the tiny pieces that all matter—all the stuff in the world—is made of
Down
  1. a starting substance that is part of a chemical reaction
  2. a group of atoms joined together in a particular way
  3. the temperature at which a substance changes from the solid phase to the liquid phase
  4. to change the order or position of something
  5. something that can be observed about a substance, such as color, smell, or boiling point
  6. an ending substance that is made during a chemical reaction
  7. chemical _______ - a process in which atoms rearrange to form new substances

13 Clues: able to cause damage • to change the order or position of something • a group of atoms joined together in a particular way • a starting substance that is part of a chemical reaction • an ending substance that is made during a chemical reaction • something that is made of all the same atoms or groups of atoms • ...

choice board #3 2021-01-25

choice board #3 crossword puzzle
Across
  1. represents chemical reaction
  2. cant be created nor destroyed
  3. arrows on a chemical equation
  4. written or printed below the line
Down
  1. everything is equal
  2. not everything is equal on both sides
  3. what make up a product
  4. placed in front of chemical formula
  5. end of a reaction

9 Clues: end of a reaction • everything is equal • what make up a product • represents chemical reaction • cant be created nor destroyed • arrows on a chemical equation • written or printed below the line • placed in front of chemical formula • not everything is equal on both sides

chemistry crossword puzzle 2022-02-11

chemistry crossword puzzle crossword puzzle
Across
  1. A number in a chemical equation indicating more than one molecule of the substance
  2. The tendency of a substance to interact with itself
  3. The smallest piece of an element that maintains the identity of that element
  4. An ionic compound of the H+ cation dissolved in water
  5. The connection between two atoms in a molecule
  6. ending that is applied that describes the types of chemical bonds in the molecule
  7. A chemical bond formed by two atoms sharing electrons
  8. Bind to the surface of another substance
  9. A physical property defined as a substance’s mass divided by its volume
  10. The characteristic temperature at which a liquid becomes a gas
  11. the unit of temperature scales
  12. A chemical reaction in which a reactant combines with oxygen to produce oxides of all other elements as products
  13. A tiny subatomic particle with a negative charge
Down
  1. Chemical reactions that absorb (or use) energy
  2. The sum of the number of protons and neutrons in a nucleus
  3. A species with an overall negative charge
  4. a combination of more than one elements
  5. the name comes before the molecule
  6. When a chemical reaction happens, energy is transferred to or from the surroundings.
  7. the process of gas becoming a liquid
  8. A gas law that relates number of particles to volume
  9. A condition when the reactants and products of a chemical equation have the same number of atoms of all elements presentcatalyst
  10. A compound that increases the amount of OH− ions in an aqueous solution

23 Clues: the unit of temperature scales • the name comes before the molecule • the process of gas becoming a liquid • a combination of more than one elements • Bind to the surface of another substance • A species with an overall negative charge • Chemical reactions that absorb (or use) energy • The connection between two atoms in a molecule • ...

Bioenergetics Medical Biochemistry II 2021 2021-02-06

Bioenergetics Medical Biochemistry II 2021 crossword puzzle
Across
  1. The process of metabolism that leads to the breakdown of macromolecules in order to make chemical energy.
  2. This molecule is an important acyl carrier and carries to carbon-units into metabolic pathways or for synthesis of fatty acids.
  3. This molecule can facilitate single electron transfers in biological reactions.
  4. This type of molecule is electron-rich and will attack positively charged centers en route to creating new chemical bonds.
  5. The first law of thermodynamics describes the _________ of energy.
  6. This cation is used to help screen the negative charges on ATP/ADP to facilitate hydrolysis.
  7. This molecule is a very common phosphate donor
  8. Energy in living systems is usually released and transferred in the form of ______ energy.
  9. Chemical reactions are more favorable and proceed in the forward direction if the the products are _____ such as via resonance or solvation.
  10. This molecule has the highest oxidation state for carbon.
  11. Hydrolysis of this molecule releases more energy than hydrolysis of ATP because of a high energy reactant, product stabilization, and tautomerization (use abbreviation).
Down
  1. Standard free energy changes are ______.
  2. This type of cleavage is more rare and involves the formation of radicals when a chemical bond has the electrons split equally
  3. The process of metabolism that leads to the synthesis of macromolecules.
  4. This type of molecule is positively-charge or electron deficient and is susceptible to attack via nucleophiles en route to creating new chemical bonds.
  5. Free energy changes in the biochemical cell are dependent on the ______ of the reactant and products.
  6. This molecule is an important reactant/cofactor in biological oxidation/reduction reactions (use abbreviation).
  7. This reaction type does not have a change in oxidation state and typically has much smaller free-energy changes.
  8. This type of chemical reaction occurs when a molecule loses electrons
  9. This molecule is used in hydrolysis reactions to generate new products, which tend to be strongly favorable.
  10. This thermodynamic variable is described by the second law of thermodynamics; the universe tends to always be increasing in disorder.
  11. This sign of deltaG indicates a chemical reaction is spontaneous and will proceed in the forward direction.

22 Clues: Standard free energy changes are ______. • This molecule is a very common phosphate donor • This molecule has the highest oxidation state for carbon. • The first law of thermodynamics describes the _________ of energy. • This type of chemical reaction occurs when a molecule loses electrons • The process of metabolism that leads to the synthesis of macromolecules. • ...

Cdi06 2025-06-03

Cdi06 crossword puzzle
Across
  1. Sustained luminous electrical discharge between electrodes.
  2. Heat transfer via circulating medium.
  3. Abnormal fire movement from interference.
  4. Electrical fires in live wires or equipment.
  5. Initial fire stage, normal room temperature.
  6. Heat absorbed or released during phase change.
  7. Black, combustible mineral solid from partly decomposed matter
  8. Exothermic reaction of combustible material with oxidizer.
  9. Force by molecules on liquid's surface.
  10. Condensed phased combustion.
  11. Prepared flammables to spread fire.
  12. Changes absorbing or adding energy.
  13. Manifestation of rapid chemical reaction with fuel and oxidizer
  14. Metallic fires from finely divided burning metals.
  15. Oxidizing agent combining with fuel vapor.
  16. Weight of pure gas volume to equal dry air volume.
  17. Crude oil refined for fuels like gasoline, diesel, kerosene.
  18. Sudden ignition of accumulated radical gases.
  19. Combustiblematerial that vaporizes and burns.
  20. Gathering combustibles to start fire.
  21. Heat moving as waves and rays.
  22. Temperature liquid forms ignitable vapor-air mixture.
  23. The burning process.
  24. Raises fuel vapor to ignition temperature.
  25. Accidental low-resistance connection between different potentials.
  26. Temperature for vapor to burn.
  27. Represents combustion including chain reaction.
Down
  1. Automatic chemical reaction causing spontaneous combustion.
  2. Changing from solid to gas.
  3. Liquid fires,flammable or combustible liquids.
  4. Flammable chemical facilitating flame propagation.
  5. Temperature liquid's vapor pressure equals atmospheric pressure.
  6. Glowing particles and luminous gaseous products of burning
  7. Gas for heating, cooking, industrial energy.
  8. Normal, rising pattern of undisturbed fire.
  9. Reactions releasing energy.
  10. Orange,red, incomplete combustion
  11. Lowest temperature liquid's vapors support combustion.
  12. Changing from liquid to vapor.
  13. Ratio of substance's weight to equal water volume's weight.
  14. Heat transfer by molecular activity in a material.
  15. Sudden rapid burning of heated gases in confined area.
  16. Oxygen drops, flame vanishes, heat layers.
  17. Accelerated pyrolysis, convection develops.
  18. Combination of fuel, oxygen, heat.
  19. Blue, complete combustion, high temperature flame.
  20. Highly combustible vapors.
  21. Natural highmagnitude electrical current.
  22. Chemical decomposition of matter by heat.
  23. Ordinary fires,wood, paper, textiles, rubber.

50 Clues: The burning process. • Highly combustible vapors. • Changing from solid to gas. • Reactions releasing energy. • Condensed phased combustion. • Changing from liquid to vapor. • Heat moving as waves and rays. • Temperature for vapor to burn. • Orange,red, incomplete combustion • Combination of fuel, oxygen, heat. • Prepared flammables to spread fire. • ...

water and emzymes 2021-10-03

water and emzymes crossword puzzle
Across
  1. are substances which react with acids
  2. a region on an enzyme that binds to a protein or other substance during a reaction
  3. the minimum quantity of energy which the reacting species must possess in order to undergo a specified reaction.
  4. the minor component in a solution, dissolved in the solvent.
  5. a scale used to specify the acidity or basicity of an aqueous solution
  6. any substance that in water solution tastes sour
  7. species formed from chemical reactions.
  8. a means of solving a problem or dealing with a difficult situation
  9. able to dissolve other substances
Down
  1. a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.
  2. a molecule in which one end of the molecule is slightly positive, while the other end is slightly
  3. is a substance made by mixing other substances together.
  4. a process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction.
  5. the surface or material on or from which an organism lives, grows, or obtains its nourishment.
  6. a substance that acts as a catalyst in living organisms
  7. primarily electrostatic force of attraction between a hydrogen atom which is covalently bound to a more electronegative atom or group
  8. a solution that can resist pH change upon the addition of an acidic or basic components

17 Clues: able to dissolve other substances • are substances which react with acids • species formed from chemical reactions. • any substance that in water solution tastes sour • a substance that acts as a catalyst in living organisms • is a substance made by mixing other substances together. • the minor component in a solution, dissolved in the solvent. • ...

Bubbles, Bangs and Burning 2013-04-22

Bubbles, Bangs and Burning crossword puzzle
Across
  1. You will see this happening if you add sodium bicarbonate to acid.
  2. Used as a fuel in some cars.
  3. Colourless gas, which comes from the gas taps in the lab.
  4. White substance found in some fire extinguishers.
  5. Colourless gas, which makes up about 1/5 of the air we breathe.
  6. The chemical that goes into a chemical reaction.
  7. Colourless liquid that turns cloudy when carbon dioxide bubbles through it.
  8. The chemical produced in a chemical reaction.
Down
  1. If a fuel burns in a good supply of oxygen then carbon (?) is made.
  2. Colourless chemical, made when fuel burns, which is very dangerous if used in the wrong way.
  3. If a fuel burns in too little oxygen then carbon (?) is made.
  4. A stored source of energy.
  5. A type of energy, which is also named in the fire triangle.
  6. These chips can be added to acid to make carbon dioxide.
  7. Metal that burns with oxygen to make magnesium oxide.

15 Clues: A stored source of energy. • Used as a fuel in some cars. • The chemical produced in a chemical reaction. • The chemical that goes into a chemical reaction. • White substance found in some fire extinguishers. • Metal that burns with oxygen to make magnesium oxide. • These chips can be added to acid to make carbon dioxide. • ...

6 grade Semester Exams Bodhi.E.Bartels 2021-12-09

6 grade Semester Exams Bodhi.E.Bartels crossword puzzle
Across
  1. atoms of a specific element.
  2. the transfer of heat from one substance to another through direct contact.
  3. energy energy of moving electrons or electric charges.
  4. a chemical reaction has occurred if any of the following take place:unexpected temperature change,unexpected color change.
  5. a measure of an object's thermal energy.
  6. change the type of change that results in the formation of new chemical substances.
  7. formula a shorthand representation of an element or compound using chemical symbols.
  8. transformation the change in energy from one form into another.
  9. energy energy that travels in waves.
Down
  1. a mixture of gases that surround the Earth.
  2. the number written after an element's symbol in a chemical formula that indicates the number
  3. energy energy locked in the nucleus of an atom.
  4. Reaction a chemical change that occurs when two or more chemical substances combine to form a new substance.
  5. a pure substance that can't be broke down chemically.
  6. Change type
  7. a substance that consists of 2 or more elements,combined in a set ratio.
  8. energy energy stored in the of molecules.
  9. the form of energy associated with the movement of atoms and molecules in a material.

18 Clues: Change type • atoms of a specific element. • energy energy that travels in waves. • a measure of an object's thermal energy. • energy energy stored in the of molecules. • a mixture of gases that surround the Earth. • energy energy locked in the nucleus of an atom. • a pure substance that can't be broke down chemically. • ...

Chemical Reactions 1.3 2023-10-11

Chemical Reactions 1.3 crossword puzzle
Across
  1. indicate the number of molecules present in a chemical equation
  2. A+B-->AB
  3. is the burning of a substance in the presence of oxygen
  4. interaction between molecules that causes a chemical change, converting an existing substance into a new substance
  5. For instance, water is ice in its solid form.
  6. A+BX-->B+AX
  7. can have a corrosive effect
  8. H202(aq) + light ------> H2O(l) + O2(g)
  9. Any substance having a pH between 7 to 14 on the pH scale
Down
  1. indicates the number of atoms of an element in a compound, or the matter state of the compound.
  2. an ionic substance formed when a water molecule combines with a hydrogen ion
  3. In a common chemical reaction, the _________ oxygen and a hydrocarbon (such as oil, gasoline, or wood) produce water, carbon dioxide, and heat.
  4. from one state of matter to another without a change in chemical composition
  5. the substances that are formed during a chemical reaction
  6. AC+BD-->AD+BC

15 Clues: A+B-->AB • A+BX-->B+AX • AC+BD-->AD+BC • can have a corrosive effect • H202(aq) + light ------> H2O(l) + O2(g) • For instance, water is ice in its solid form. • is the burning of a substance in the presence of oxygen • the substances that are formed during a chemical reaction • Any substance having a pH between 7 to 14 on the pH scale • ...

Chemical Bonds Crossword 2025-05-13

Chemical Bonds Crossword crossword puzzle
Across
  1. Bonds that transfer electrons
  2. Bonds that share electrons
  3. A chemical ____ is a link between atoms in a substance that determines its identity
  4. A rule where atoms look for a complete outer level, so they share electrons to be stable
  5. A ______ change is a change in size, shape, form, or identity
  6. Group of atoms held together with chemical bonds.
Down
  1. A chemical reaction occurs when chemical bonds are ____.
  2. The smallest part of a substance that cannot be broken down chemically
  3. A(n) ________ reaction happens when chemical bonds give off heat
  4. A chemical ____ tells you the amount of electrons and atoms

10 Clues: Bonds that share electrons • Bonds that transfer electrons • Group of atoms held together with chemical bonds. • A chemical reaction occurs when chemical bonds are ____. • A chemical ____ tells you the amount of electrons and atoms • A ______ change is a change in size, shape, form, or identity • A(n) ________ reaction happens when chemical bonds give off heat • ...

A Random Find :) 2020-04-19

A Random Find :) crossword puzzle
Across
  1. a substance that takes part in and undergoes change during a reaction
  2. a polygon with at least one interior angle greater than 180°.
  3. the smallest particle of a chemical element that can exist.
  4. a chemical reaction that is accompanied by the absorption of heat,or an organism that generates heat.
  5. the willingness to tolerate the existence of opinions or behavior that you dislikes or disagree with.
Down
  1. hopefulness and confidence
  2. When two Angles add up to 180 degrees.
  3. accompanied by the release of heat.
  4. not having any interior angles greater than 180°.
  5. a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.

10 Clues: hopefulness and confidence • accompanied by the release of heat. • When two Angles add up to 180 degrees. • not having any interior angles greater than 180°. • the smallest particle of a chemical element that can exist. • a polygon with at least one interior angle greater than 180°. • a substance that takes part in and undergoes change during a reaction • ...

ENZYMES CONTROL BIOLOGICAL PROCESSES 2021-12-01

ENZYMES CONTROL BIOLOGICAL PROCESSES crossword puzzle
Across
  1. a stomach enzyme with a very low optimum pH
  2. the loss of an enzyme's 3D shape
  3. goes along with the lock, in enzymes
  4. goes along with the key, in enzymes
  5. the part of an enzyme where the reaction occurs
  6. more of these ions lower the pH
  7. a reactant in an enzyme-catalysed reaction
  8. a poison that affects an enzyme in respiration
  9. enzyme that breaks down harmful ions in liver cells
  10. a molecule that can speed up an enzyme-catalysed reaction
  11. molecule produced in an enzyme-catalysed reaction
Down
  1. fat-digesting enzyme - useful in biological washing powders
  2. all of the chemical reactions occurring in the cells
  3. the 'best' value for a factor affecting enzyme activity
  4. starch-digesting enzyme
  5. a compound that reduces the activity of an enzyme
  6. a protein-digesting enzyme
  7. this factor affects an enzyme's activity
  8. a molecule that speeds up a reaction but is not affected itself

19 Clues: starch-digesting enzyme • a protein-digesting enzyme • more of these ions lower the pH • the loss of an enzyme's 3D shape • goes along with the key, in enzymes • goes along with the lock, in enzymes • this factor affects an enzyme's activity • a reactant in an enzyme-catalysed reaction • a stomach enzyme with a very low optimum pH • ...

WS stoichiometry definitions 2022-11-29

WS stoichiometry definitions crossword puzzle
Across
  1. A ratio expressed as a fraction that equals 1, used to convert units.
  2. Unit for measuring large amounts of small entities.
  3. Relationship between relative quantities of substances taking part in a reaction/forming a compound.
  4. Equation for a chemical reaction in which the number of atoms for each element and the total charge are the same.
  5. The lowest whole number ratio of ions represented in an ionic compound.
  6. Number of atoms or molecules.
Down
  1. chemical formula showing the simplest ratio of elements in a compound.
  2. A compound in which water molecules are chemically bound to another compound/element.
  3. The relationship between the number of moles of various products and reactants in a chemical reaction.
  4. Basic unit of a chemical element that CANNOT be broken down chemically.
  5. formula giving number of atoms of each elements present in one molecule of a specific compound.
  6. Process involving rearrangement of molecular or ionic structure of a molecule.
  7. Mass of a sample of a compound divided by the amount of substance in moles.
  8. Any atom/group of atoms that have one or more positive or negative electrical charges.

14 Clues: Number of atoms or molecules. • Unit for measuring large amounts of small entities. • A ratio expressed as a fraction that equals 1, used to convert units. • chemical formula showing the simplest ratio of elements in a compound. • Basic unit of a chemical element that CANNOT be broken down chemically. • ...

Chemistry 2021-10-20

Chemistry crossword puzzle
Across
  1. - is the name for the element with atomic number 7 and is represented by the symbol N
  2. - atom or molecule which has a different number of protons than electrons
  3. capacity - quantity of heat needed to raise the temperature of a sample by a specified amount
  4. mass - average mass of atoms of an element
  5. - emitted energy in the form of rays, waves, or particles
  6. - a substance that cannot be subdivided using chemical means
  7. - alkaline earth metal with element symbol Be and atomic number 4
  8. table - tabular arrangement of elements by increasing atomic number, ordered according to trends in recurring properties
Down
  1. - noble gas with element symbol Ne and atomic number 10
  2. - loss of electrons by an atom, molecule or ion in a chemical reaction
  3. number - the number of protons in the nucleus of an atom of an element
  4. - any matter or substance that has mass
  5. - Iron is the name for the element with atomic number 26 and is represented by the symbol Fe
  6. - stable negatively charged subatomic particle
  7. replacement reaction - chemical reaction in which two reactants exchange anions/cations to form two new products using the same ions

15 Clues: - any matter or substance that has mass • mass - average mass of atoms of an element • - stable negatively charged subatomic particle • - noble gas with element symbol Ne and atomic number 10 • - emitted energy in the form of rays, waves, or particles • - a substance that cannot be subdivided using chemical means • ...

Ricky 2019-06-11

Ricky crossword puzzle
Across
  1. Forms between two nonmetals
  2. Negatively charged ions
  3. a state in which there are no observable changes as time goes by
  4. A carbon-based compound with oxygen
  5. When two compounds appear to exchange ions and form two new ones
  6. They conduct electricity
  7. The numbers in front of the formula
  8. two or more elements combined; a substance having different properties than of the elements used.
  9. When a single compound breaks down into two or more elements
  10. Form between a metal and a nonmetal
  11. A substance that takes part in and undergoes change during a reactProducts
  12. Groups of ions with a charge
Down
  1. The symbolic representation of a chemical reaction in the form of symbols and formula
  2. substance that is formed as the result of a chemical reaction
  3. An equation in which each side is the same number of atoms of each element
  4. Any system closed to all transfers of matter and energy
  5. mass of an atom expressed in atomic mass units (amu); the total number of protons and neutrons in the nucleus
  6. Reacts with a compound and displaces another element from the compound
  7. A solution in which the solvent is water
  8. Two or more substances combine to form a new compound
  9. The symbol that separates the reactants from the products of a chemical reaction is
  10. Energy is divided into smaller orbits
  11. the capacity to do work or to produce change
  12. A force that holds the atoms of a molecule together
  13. A way to indicate the chemicals that involved in the chemical reaction
  14. electrons Electrons located in the outermost energy level
  15. the sub-atomic particle, with a negative charge, that orbits the nucleus of an atom.element
  16. Positively charged ions
  17. Electrons move in definite “orbits”
  18. The symbol(aq) indicates a substance is dissolved in?

30 Clues: Negatively charged ions • Positively charged ions • They conduct electricity • Forms between two nonmetals • Groups of ions with a charge • A carbon-based compound with oxygen • The numbers in front of the formula • Electrons move in definite “orbits” • Form between a metal and a nonmetal • Energy is divided into smaller orbits • A solution in which the solvent is water • ...

The Chemistry of Life 2023-09-12

The Chemistry of Life crossword puzzle
Across
  1. - A PROCESS THAT TRANSFORMS ONE SET OF COMPOUNDS INTO ANOTHER
  2. - CONSISTS OF 5 CARBON SUGAR, PHOSPHATE, AND NITROGENOUS BASE
  3. - CONSISTS OF AN AMINO AND CARBOXYL GROUP. MONOMER OF PROTEINS
  4. - A SCALE MEASURING THE CONCENTRATION OF HYDROGEN IONS IN A SOLUTION
  5. - THE COMPOUND PRODUCED BY A CHEMICAL REACTION
  6. - A COMPOUND THAT RELEASES HYDROXIDE IONS INTO SOLUTION
  7. - THE REACTANTS OF ENZYME CATALYZED REACTIONS
  8. - WEAK ACIDS OR BASES REACTING WITH STRONG ACIDS OR BASES TO PREVENT SHARP CHANGES IN PH
  9. - A SUBSTANCE THAT DOES THE DISSOLVING
  10. - MIXTURES WITH NONDISSOLVED SUBSTANCES THAT SUSPEND MOMENTARILY
  11. - A SUBSTANCE THAT GETS DISSOLVED
  12. - BIOLOGICAL CATALYST MADE OF PROTEINS
  13. - A LARGE UNIT MADE OF SMALLER REPEATING UNITS
  14. - A COMPOUND THAT RELEASES HYDROGEN IONS INTO SOLUTION
  15. - THE ELEMENT OR COMPOUNDS THAT ENGAGE IN A CHEMICAL REACTANT
  16. - ATTRACTION BETWEEN MOLECULES OF THE SAME SUBSTANCE
  17. - A MIXTURE FORMED WITH DISSOLVED SUBSTANCES
Down
  1. - ATTRACTION BETWEEN MOLECULES OF DIFFERENT SUBSTANCES
  2. - POLYMER MADE OF NUCLEOTIDES RESULTING IN DNA OR RNA
  3. - BOND FORMED WHEN ELECTRONS ARE TRANSFERRED TO ATOMS
  4. - POLYMER CONSISTING OF CARBON, HYDROGEN, OXYGEN, AND NITROGEN (AMINO ACIDS)
  5. - BOND FORMED WHEN ELECTRONS ARE SHARED BETWEEN ATOMS
  6. - MADE MOSTLY OF CARBON AND HYDROGEN, HYDROPHOBIC, (OIL/WAX)
  7. - MADE OF CARBON, HYDROGEN, AND OXYGEN IN A RATIO OF 1:2:1 (SUGAR)
  8. - THE BOND FORMED OF THE ATTRACTION OF OPPOSITE CHARGES FROM HYDROGENS AND OXYGENS
  9. - STRUCTURE FORMED BY ATOMS AND COVALENT BONDS
  10. - SUBSTANCE FORMED BY CHEMICAL COMBINATION OF 2+ ELEMENTS
  11. - THE ENERGY NEEDED TO GET A REACTION STARTED
  12. - A PURE SUBSTANCE CONSITING OF ONE TYPE OF ATOM
  13. - A SUBSTANCE THAT SPEEDS UP A CHEMICAL REACTION
  14. - ATOMS OF THE SAME ELEMENT THAT DIFFER IN NUMBER OF NEUTRONS
  15. - A SINGLE UNIT
  16. - SMALL, NEGATIVELY CHARGED PARTICLE FOUD FAR FROM THE NUCLEUS
  17. - THE CENTER OF THE ATOM (PROTONS AND NEUTRONS)
  18. - THE BASIC UNIT OF MATTER

35 Clues: - A SINGLE UNIT • - THE BASIC UNIT OF MATTER • - A SUBSTANCE THAT GETS DISSOLVED • - A SUBSTANCE THAT DOES THE DISSOLVING • - BIOLOGICAL CATALYST MADE OF PROTEINS • - A MIXTURE FORMED WITH DISSOLVED SUBSTANCES • - THE ENERGY NEEDED TO GET A REACTION STARTED • - THE REACTANTS OF ENZYME CATALYZED REACTIONS • - STRUCTURE FORMED BY ATOMS AND COVALENT BONDS • ...

chemistry 2024-10-10

chemistry crossword puzzle
Across
  1. - Atom or molecule with a net electric charge.
  2. - State of matter with no fixed shape or volume.
  3. - Measure of thermal energy in a substance.
  4. - Lipid that stores energy and provides insulation.
  5. - Sweet carbohydrate used as an energy source.
  6. - Substance with a pH greater than 7.
  7. - Reaction involving the loss of electrons.
  8. - Force applied per unit area in gases or liquids.
  9. - Element essential for DNA and ATP (P).
  10. - State of matter that flows and takes the shape of its container.
  11. - Gas that makes up about 78% of Earth's atmosphere (N).
  12. - Important electrolyte for cellular function (K).
  13. - Gaseous state of a substance that is typically a liquid or solid.
  14. - Reaction involving the gain of electrons.
  15. - Combination of two or more substances without a chemical reaction.
  16. - Lightest element, found in water (H).
  17. - Fundamental element in organic chemistry (C).
  18. - Mineral important for bones and teeth (Ca).
Down
  1. - Smallest unit of a chemical compound.
  2. - Essential liquid for life (H₂O).
  3. - Physical form of matter: solid, liquid, or gas.
  4. - Large biomolecule made of amino acids.
  5. - Main source of energy for living organisms.
  6. - Prefix indicating one billionth; used in nanotechnology.
  7. - Substance formed from two or more elements chemically bonded.
  8. - Disinfectant used in water treatment (Cl).
  9. - Process where substances transform into new products.
  10. - Biological catalyst that speeds up chemical reactions.
  11. - Homogeneous mixture of solute and solvent.
  12. - Element known for its distinct smell in rotten eggs (S).
  13. - State of matter with a fixed shape and volume.
  14. - Alkali metal essential for nerve function (Na).
  15. - Inert gas used in balloons (He).
  16. Dioxide - Gas produced during respiration (CO₂).
  17. - Compound often used in fertilizers (NH₃).
  18. - Substance with a pH less than 7.
  19. - Gas needed for respiration (O₂).
  20. - Mixture where small particles are dispersed but not dissolved.
  21. - Organic compound commonly used in beverages (e.g., ethanol).
  22. - Any substance with a defined composition.

40 Clues: - Essential liquid for life (H₂O). • - Inert gas used in balloons (He). • - Substance with a pH less than 7. • - Gas needed for respiration (O₂). • - Substance with a pH greater than 7. • - Smallest unit of a chemical compound. • - Lightest element, found in water (H). • - Large biomolecule made of amino acids. • - Element essential for DNA and ATP (P). • ...

chemistry 2024-10-10

chemistry crossword puzzle
Across
  1. - Atom or molecule with a net electric charge.
  2. - State of matter with no fixed shape or volume.
  3. - Measure of thermal energy in a substance.
  4. - Lipid that stores energy and provides insulation.
  5. - Sweet carbohydrate used as an energy source.
  6. - Substance with a pH greater than 7.
  7. - Reaction involving the loss of electrons.
  8. - Force applied per unit area in gases or liquids.
  9. - Element essential for DNA and ATP (P).
  10. - State of matter that flows and takes the shape of its container.
  11. - Gas that makes up about 78% of Earth's atmosphere (N).
  12. - Important electrolyte for cellular function (K).
  13. - Gaseous state of a substance that is typically a liquid or solid.
  14. - Reaction involving the gain of electrons.
  15. - Combination of two or more substances without a chemical reaction.
  16. - Lightest element, found in water (H).
  17. - Fundamental element in organic chemistry (C).
  18. - Mineral important for bones and teeth (Ca).
Down
  1. - Smallest unit of a chemical compound.
  2. - Essential liquid for life (H₂O).
  3. - Physical form of matter: solid, liquid, or gas.
  4. - Large biomolecule made of amino acids.
  5. - Main source of energy for living organisms.
  6. - Prefix indicating one billionth; used in nanotechnology.
  7. - Substance formed from two or more elements chemically bonded.
  8. - Disinfectant used in water treatment (Cl).
  9. - Process where substances transform into new products.
  10. - Biological catalyst that speeds up chemical reactions.
  11. - Homogeneous mixture of solute and solvent.
  12. - Element known for its distinct smell in rotten eggs (S).
  13. - State of matter with a fixed shape and volume.
  14. - Alkali metal essential for nerve function (Na).
  15. - Inert gas used in balloons (He).
  16. Dioxide - Gas produced during respiration (CO₂).
  17. - Compound often used in fertilizers (NH₃).
  18. - Substance with a pH less than 7.
  19. - Gas needed for respiration (O₂).
  20. - Mixture where small particles are dispersed but not dissolved.
  21. - Organic compound commonly used in beverages (e.g., ethanol).
  22. - Any substance with a defined composition.

40 Clues: - Essential liquid for life (H₂O). • - Inert gas used in balloons (He). • - Substance with a pH less than 7. • - Gas needed for respiration (O₂). • - Substance with a pH greater than 7. • - Smallest unit of a chemical compound. • - Lightest element, found in water (H). • - Large biomolecule made of amino acids. • - Element essential for DNA and ATP (P). • ...

CHEMISTRY CROSSWORD 2025-07-21

CHEMISTRY CROSSWORD crossword puzzle
Across
  1. Visible, hot gas from burning substances.
  2. A substance with a sour taste and pH less than 7; turns blue litmus red.
  3. A container used in labs to hold liquids.
  4. Fourth state of matter found in stars and lightning
  5. The substance dissolved in a solution.
  6. The mixing of atomic orbitals to form new orbitals for bonding.
  7. Measure of the amount of matter.
  8. The amount of space an object or substance occupies.
  9. A fixed circular path in Bohr’s model where electrons revolve around the nucleus.
  10. A neutral particle found in the nucleus of an atom.
  11. The smallest unit of matter that retains the properties of an element.
  12. A compound formed from an acid and a base.
  13. A reaction involving both oxidation and reduction."
  14. A chemical change producing new substances.
  15. Unequal sharing of electrons in a molecule causes this type of charge separation.
  16. A mixture of two or more metals, or a metal and a non-metal.
  17. A slow chemical reaction between iron, water, and oxygen.
Down
  1. A combination of two or more substances that do not chemically combine.
  2. The process in which a single ligand forms multiple bonds with a central metal ion.
  3. The existence of an element in more than one physical form in the same state (like diamond )
  4. A chemical reaction in which a substance burns in oxygen to release heat.
  5. Atom or molecule with an electric charge.
  6. A molecule made of three oxygen atoms.
  7. A negatively charged particle that moves around the nucleus.
  8. A bond formed by sharing of electrons.
  9. Regions in an atom where there is a high probability of finding electrons.
  10. The chemical decomposition of a substance by passing electric current through it.
  11. "Makes up most of the air we breathe, but we can't use it directly."

28 Clues: Measure of the amount of matter. • The substance dissolved in a solution. • A molecule made of three oxygen atoms. • A bond formed by sharing of electrons. • Visible, hot gas from burning substances. • A container used in labs to hold liquids. • Atom or molecule with an electric charge. • A compound formed from an acid and a base. • ...

Chemistry Wrap Up 2022-12-15

Chemistry Wrap Up crossword puzzle
Across
  1. The substance entirely consumer in a chemical reaction?
  2. H2O has ______ molecular geometry.
  3. The dissolving medium in a solution.
  4. n = l and l = 5 are examples of ______ numbers.
  5. What form of notation is this value written in? 2.3 *10^6
  6. Gas production is an indication of a _________ reaction.
  7. How many significant figures are in the solution to 1.3456 - 1.21?
  8. The quantitative description oof the relative amounts of substances involved in a chemical reaction.
  9. Elements within a _____ behave similarly.
  10. A triple bond contains 1 _____ and 2 pi bonds.
  11. What is the correct name for the compound CCl₄?
  12. A substance that forms ions in solution.
  13. In this equation, NH3 acts as the Brønsted-Lowry _____: NH3(aq) + H2O(l) ⇌NH4+ (aq) + OH−(aq).
  14. An atom or electron's lowest energy state.
  15. The term for structures with the same connectivity of atoms but different arrangements of valence electrons.
Down
  1. The property of being slightly repelled by a magnetic field, due to paired electrons in orbitals.
  2. A type of property that doesn’t depend on the amount of matter.
  3. The rule stating 4 electrons fill a valence shell.
  4. Chemical equations must be balanced to reflect the law of _____________ of mass.
  5. the physical state “s” indicates a _________ has formed.
  6. When dipole moments in a compound don't cancel out, the molecule can be described as _____.
  7. Atomic radius _______ down a group.
  8. King Henry ___ Monday Drinking Chocolate Milk
  9. What type of reaction is the following? CxHy + O2 → CO2 + H2O
  10. A _____ formal charge is more stable.
  11. How close measurements are to the true value.
  12. The oxidation number of Mn in KMnO4.
  13. LEO says ___.
  14. Hydrogen tends to make ____ bond(s) in a compound.
  15. The standard unit for expressing macroscopic quantities of elements or compounds.
  16. moles solute/liters of solution

31 Clues: LEO says ___. • moles solute/liters of solution • H2O has ______ molecular geometry. • Atomic radius _______ down a group. • The dissolving medium in a solution. • The oxidation number of Mn in KMnO4. • A _____ formal charge is more stable. • A substance that forms ions in solution. • Elements within a _____ behave similarly. • An atom or electron's lowest energy state. • ...

Atoms Vocabulary 2025-10-09

Atoms Vocabulary crossword puzzle
Across
  1. cycle - A method by which carbon is constantly moved throughout the biosphere.
  2. reaction - A process where a set of substances undergo a chemical change to form a different substance.
  3. A table of the chemical elements arranged by atomic number.
  4. - The ability of a material to be stretched into a long wire.
  5. The central core of an atom containing the protons and neutrons.
  6. A particle within the nucleus of an atom that holds a positive charge.
  7. - A molecule is formed when two or more atoms are joined together by a chemical bond.
  8. - Density is the mass per unit volume of a substance.
  9. - A substance is said to be malleable if it can be pounded into a thin sheet.
  10. A family of elements that makes up column 18 of the periodic table. They are very stable due to their full outer electron shells.
  11. The name for the process when oxygen combines with another element to form a compound.
  12. Salts are chemical compounds that are formed by the reaction of an acid and a base.
  13. - A substance that speeds up the rate of a chemical reaction. The catalyst is not consumed in the reaction.
  14. - A conductor is a material that allows the flow of energy such as heat or electricity.
  15. A homogeneous mixture where one substance called the solute is fully dissolved into another substance called the solvent. For example, a solution is formed when salt dissolves into water to make the solution salt water.
  16. - An alloy is a metallic mixture of two or more elements. Examples of alloys include brass, bronze, and steel.
  17. solution - Any solution where water is the solvent.
  18. A particle in the nucleus of an atom that has no electric charge.
  19. - A combination of two or more substances that are not chemically combined.
  20. burner - A piece of chemistry lab equipment that produces a flame used for lab experiments.
  21. - A particle of an atom that orbits the atom's nucleus and carries a negative charge.
Down
  1. An electron in an atom that can participate in a chemical bond.
  2. earth metals - The alkaline earth metals are the elements in the second column of the periodic table.
  3. bond - Covalent bonding occurs between atoms that share a pair of electrons in order to gain full outer shells.
  4. bond - Ionic bonding is when an electron is traded between atoms in order to have full outer shells.
  5. - An attraction between atoms that forms chemical substances.
  6. - A process used to drive a chemical reaction by using an electrical current. It is often used to separate elements.
  7. The pH measures the activity of the hydrogen ion in substances. If a substance has a pH less than 7 it is said to be acidic. If its pH is greater than 7 then it said to be basic or alkaline.
  8. - A base is a substance with a pH higher than seven. Bases are defined as donating a pair of valence electrons.
  9. - Allotropes are different forms in which the same element can exist. For example, the element carbon can take the form of the allotrope graphite or the allotrope diamond.
  10. - A substance that is a good conductor of heat and electricity. They are generally malleable, ductile, and shiny.
  11. - The process of separating mixtures by boiling a liquid and then recovering the cooled gas.
  12. metals - The alkali metals are the elements in the first column of the periodic table with the exception of hydrogen.
  13. The process that occurs when two or more chemical substances are combined to form another chemical substance.
  14. - Isotopes are atoms from the same element that have different numbers of neutrons.
  15. - The atom is a basic unit of matter and the smallest unit of an element. It consists of a nucleus which is surrounded by a cloud of electrons.
  16. - A chemical compound is a pure substance made up of two or more elements.
  17. - The study of chemical processes as they relate to living organisms.
  18. - An acid is a compound with a pH of less than 7 that forms hydrogen ions when dissolved in water. Acids react when coming into contact with bases and some metals to form salts.
  19. - A pure chemical substance that is made up of one type of atom. Each atom in an element is defined by an atomic number which is the number of protons in the nucleus.
  20. - An atom or molecule which has a negative or positive charge because the number of electrons does not equal the number of protons.

41 Clues: solution - Any solution where water is the solvent. • - Density is the mass per unit volume of a substance. • A table of the chemical elements arranged by atomic number. • - The ability of a material to be stretched into a long wire. • - An attraction between atoms that forms chemical substances. • An electron in an atom that can participate in a chemical bond. • ...

Warm Up 10/15 2025-10-15

Warm Up 10/15 crossword puzzle
Across
  1. (11x6)+1 = ____
  2. The total force acting on an object after all forces are combined.
  3. when _________forces acting on an object are not equal, causing motion to change.
  4. The substance formed as a result of a chemical reaction.
  5. The ________ of Conservation of Mass, States that mass is not created or destroyed in a chemical reaction.
  6. A force that opposes motion between two surfaces in contact.
  7. The number that indicates how many molecules of a substance are involved in a reaction.
  8. A pure substance made of only one type of atom.
  9. The smallest unit of an element that retains its chemical identity.
  10. The SI unit for measuring force.
Down
  1. when _________forces acting on an object are equal, resulting in no motion change.
  2. The tendency of an object to resist a change in its motion.
  3. A push or pull on an object.
  4. A substance made when two or more elements are chemically combined.
  5. A small number that shows how many atoms of an element are in a molecule.
  6. The amount of matter in an object.
  7. Newton's ___________ States that force equals mass times acceleration (F = ma).
  8. The resistance that one surface or object encounters when moving over another.
  9. The rate of change in an object’s velocity over time.
  10. A combination of two or more substances that keep their own properties.

20 Clues: (11x6)+1 = ____ • A push or pull on an object. • The SI unit for measuring force. • The amount of matter in an object. • A pure substance made of only one type of atom. • The rate of change in an object’s velocity over time. • The substance formed as a result of a chemical reaction. • The tendency of an object to resist a change in its motion. • ...

Chemistry 2024-10-10

Chemistry crossword puzzle
Across
  1. - Atom or molecule with a net electric charge.
  2. - State of matter with no fixed shape or volume.
  3. - Measure of thermal energy in a substance.
  4. - Lipid that stores energy and provides insulation.
  5. - Sweet carbohydrate used as an energy source.
  6. - Substance with a pH greater than 7.
  7. - Reaction involving the loss of electrons.
  8. - Force applied per unit area in gases or liquids.
  9. - Element essential for DNA and ATP (P).
  10. - State of matter that flows and takes the shape of its container.
  11. - Gas that makes up about 78% of Earth's atmosphere (N).
  12. - Important electrolyte for cellular function (K).
  13. - Gaseous state of a substance that is typically a liquid or solid.
  14. - Reaction involving the gain of electrons.
  15. - Combination of two or more substances without a chemical reaction.
  16. - Lightest element, found in water (H).
  17. - Fundamental element in organic chemistry (C).
  18. - Mineral important for bones and teeth (Ca).
Down
  1. - Smallest unit of a chemical compound.
  2. - Essential liquid for life (H₂O).
  3. - Physical form of matter: solid, liquid, or gas.
  4. - Large biomolecule made of amino acids.
  5. - Main source of energy for living organisms.
  6. - Prefix indicating one billionth; used in nanotechnology.
  7. - Substance formed from two or more elements chemically bonded.
  8. - Disinfectant used in water treatment (Cl).
  9. - Process where substances transform into new products.
  10. - Biological catalyst that speeds up chemical reactions.
  11. - Homogeneous mixture of solute and solvent.
  12. - Element known for its distinct smell in rotten eggs (S).
  13. - State of matter with a fixed shape and volume.
  14. - Alkali metal essential for nerve function (Na).
  15. - Inert gas used in balloons (He).
  16. Dioxide - Gas produced during respiration (CO₂).
  17. - Compound often used in fertilizers (NH₃).
  18. - Substance with a pH less than 7.
  19. - Gas needed for respiration (O₂).
  20. - Mixture where small particles are dispersed but not dissolved.
  21. - Organic compound commonly used in beverages (e.g., ethanol).
  22. - Any substance with a defined composition.

40 Clues: - Essential liquid for life (H₂O). • - Inert gas used in balloons (He). • - Substance with a pH less than 7. • - Gas needed for respiration (O₂). • - Substance with a pH greater than 7. • - Smallest unit of a chemical compound. • - Lightest element, found in water (H). • - Large biomolecule made of amino acids. • - Element essential for DNA and ATP (P). • ...

Unit 1 Chemistry 2025-01-24

Unit 1 Chemistry crossword puzzle
Across
  1. A measure of the average kinetic energy of the particles in a substance
  2. A substance's characteristics that determine how it reacts with other substances
  3. State of matter without fixed shape or volume
  4. A type of reaction that absorbs heat
  5. Substances that are consumed during a chemical reaction
  6. An explanation for some aspect of the natural world that has been well supported
  7. A type of reaction that releases heat
  8. An approach to investigate something using multiple steps
  9. State of matter with fixed molecules
  10. A statement that describes something observable in nature that is true
  11. A possible explanation for something that can be tested
  12. Substances formed when two or more elements chemically bond together
  13. Pure substances consisting of only one type of atom
  14. Anything that has mass and occupies space
  15. Solid that forms when two substances mix
  16. State of matter with volume but no fixed shape
  17. A substance's characteristics that can be observed without changing it's chemical identity
Down
  1. Substances produced as a result of a chemical reaction
  2. A change when only the appearance of a substance is changed
  3. The energy of motion
  4. A factor that can change in an experiment
  5. The capacity to do work or produce heat
  6. A process in which substances are transformed
  7. A curve showing the effect of heating or cooling on a substance
  8. Substances with a direct molecular composition that are produced by or used in a chemical process
  9. The smallest unit of an element, consisting of protons, neutrons, and electrons
  10. The form of energy that flows between substances due to a temperature difference
  11. A type of mixture where components are not uniformly distributed
  12. A type of Mixture where the composition is uniform throughout
  13. The branch of science that studies composition, structure, and properties of substances
  14. The theoretical temperature at which all particle motion stops
  15. A combination of two or more substances that are not chemically bonded

32 Clues: The energy of motion • A type of reaction that absorbs heat • State of matter with fixed molecules • A type of reaction that releases heat • The capacity to do work or produce heat • Solid that forms when two substances mix • A factor that can change in an experiment • Anything that has mass and occupies space • State of matter without fixed shape or volume • ...

Kinetics Definitions 2025-11-04

Kinetics Definitions crossword puzzle
Across
  1. Provides an alternative reaction route for a reaction to occur, that requires a lower activation energy
  2. Rate ___________ : Relates the rate of a chemical reaction at a given temperature to the product of the concentrations of reactants.
  3. Method used to calculate the concentration of a specific coloured compound in a solution by measuring the extent to which it absorbs certain wavelengths of light.
  4. The time taken for the initial concentration of the reactants to decrease by half.
  5. ___________ catalysts: Catalysts that are in a different phase or state to the species in the reaction.
  6. An organic compound containing a halogen atom attached to an alkyl chain.
Down
  1. ___________ catalysts: Catalysts that are in the same phase or state as the species in the reaction.
  2. ___________ energy: The minimum energy required for a reaction to occur.
  3. a nucleophilic substitution reaction, where the rate equation involved 2 species.
  4. An electron pair donor.
  5. Rate ___________ : Describes the relationship between the rate of chemical reaction and the concentrations of reagents.
  6. a nucleophilic substitution reaction, where the rate equation involved 1 species.

12 Clues: An electron pair donor. • ___________ energy: The minimum energy required for a reaction to occur. • An organic compound containing a halogen atom attached to an alkyl chain. • a nucleophilic substitution reaction, where the rate equation involved 2 species. • a nucleophilic substitution reaction, where the rate equation involved 1 species. • ...

unit 4 vocab for biology 2020-11-13

unit 4 vocab for biology crossword puzzle
Across
  1. relating to, involving, or requiring free oxygen
  2. the breakdown of glucose by enzymes releasing energy and pyruvic acid
  3. is a substance that is present at the end of a chemical reaction
  4. a plasted that contains chlorophyll and in which photosynthesis takes place
  5. a substance produced by a living organism which acts as a catalyst
Down
  1. a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change
  2. is a green pigment found in plants
  3. a substance that takes part in and undergoes change during a reaction
  4. is an important chemical compound in biochemistry
  5. a simple sugar which is an important energy source in living organisms

10 Clues: is a green pigment found in plants • relating to, involving, or requiring free oxygen • is an important chemical compound in biochemistry • is a substance that is present at the end of a chemical reaction • a substance produced by a living organism which acts as a catalyst • the breakdown of glucose by enzymes releasing energy and pyruvic acid • ...

Module 4 crossword 2021-08-12

Module 4 crossword crossword puzzle
Across
  1. when the total chemical energy of the products of a chemical reaction is less than the total chemical energy of the reactants
  2. heat given off when one mole of substance is burnt completely in excess of oxygen
  3. the law of ____ of energy states that energy cannot be created nor destroyed it can only change form
  4. a type of equation that indicates the change in energy in a reaction
  5. speeds up the reaction but isn't consumed itself
Down
  1. in endothermic reactions energy is _____ from the surroundings
  2. Hp < Hr
  3. where energy enters after leaving the system
  4. what type of catalyst lowers the activation energy
  5. the chemical energy of a substance

10 Clues: Hp < Hr • the chemical energy of a substance • where energy enters after leaving the system • speeds up the reaction but isn't consumed itself • what type of catalyst lowers the activation energy • in endothermic reactions energy is _____ from the surroundings • a type of equation that indicates the change in energy in a reaction • ...

Chapter 2 2019-01-17

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

72 Clues: acid • power • protein • a lipid • a lipid • the base • amino acid • atomic mass • single sugar • spheroproteins • created in 1869 • fibrous proteins • ribonucleic acid • a polysaccharide • structure of dna • electrical charge • include wax and oil • deoxyribonucleic acid • Adenosine triphosphate • a radioactive isotope. • Lack of carbon; compound. • also known as triglycerides • Carbon-containing compound. • ...

Chapter 3 Vocabulary Worksheet 2023-10-03

Chapter 3 Vocabulary Worksheet crossword puzzle
Across
  1. Energy Energy stored in chemical bonds
  2. The amount of thermal energy in a system at constant pressure which is measured in joules
  3. The release of energy
  4. Energy The minimum energy required to cause a chemical reaction
  5. Energy Converted from Kinetic Energy
  6. Energy Amount of energy that holds chemical bonds together
Down
  1. Energy absorption
  2. The measurement of Kinetic energy
  3. Energy Energy that the body/object posses
  4. The amount of energy transferred between a system and its surroundings
  5. Theory Collision of molecules that collide at the correct orientation, creating a chemical reaction

11 Clues: Energy absorption • The release of energy • The measurement of Kinetic energy • Energy Energy stored in chemical bonds • Energy Converted from Kinetic Energy • Energy Energy that the body/object posses • Energy The minimum energy required to cause a chemical reaction • Energy Amount of energy that holds chemical bonds together • ...

The Chemistry Grid 2025-07-07

The Chemistry Grid crossword puzzle
Across
  1. What must a collision be to cause a reaction?
  2. What kind of reaction gives off heat to the surroundings?
  3. What do particles need to do in order to react?
  4. what gas is given off when metal reacts with acid?
  5. What gas turns lime water cloudy?
  6. What happens to rate of reaction when temperature is lowered?
  7. What type of energy do particles need to react?
  8. What gas is given off when hydrogen peroxide decomposes?
Down
  1. What kind of reaction absorbs heat from the surroundings?
  2. A ____________________ is used during experiment to allow gas to escape
  3. Which factor affects the number of particle per unit volume?
  4. Particle moves _____________ when temperature increases
  5. What word describes how often reacting particles collide?
  6. Minimum energy that colliding particles must have for reaction to occur
  7. What do you increase when you break a solid into smaller piece?
  8. What unit is commonly used to measure reaction time?
  9. What speeds up a chemical reaction without being used up
  10. Colour of thymolphthalein in alkali solution
  11. What is the most important apparatus to collect gas

19 Clues: What gas turns lime water cloudy? • Colour of thymolphthalein in alkali solution • What must a collision be to cause a reaction? • What do particles need to do in order to react? • What type of energy do particles need to react? • what gas is given off when metal reacts with acid? • What is the most important apparatus to collect gas • ...

food 2018-12-10

food crossword puzzle
Across
  1. pure substance that cannot be broken down into other substances contains one atom
  2. pure substance formed when at least one ,metal and nonmetal combine
  3. Change in the appearance or state of a substance that does not change the composition
  4. ability of a substance to conduct electricity or heat
  5. a material that electricity or heat can move through easily
  6. group 17 elements in the periodic table least reactive metals
  7. Solid, liquid, gas and plasma
  8. Change of state from solid to a liquid
  9. Amount of mass in a given volume of a substance
  10. chemical reaction that absorbs heat
  11. Change of stare from a solid to gas or a gas to a solid
  12. positively charged center of an atom contains protons and nuetrons
Down
  1. A system of easy-to-use warning symbols for hazardous materials
  2. invisible negatively charged particle that orbits the nucleus of an atom
  3. Catalyst involved in chemical reactions in living things
  4. Measure of atomic mass
  5. Change of state from a liquid to a gas
  6. chemical reaction that produces heat
  7. number of protons in the nucleus equal to electrons
  8. Change of state from a gas to a liquid
  9. substance that speeds up chemical reactions
  10. chemical combination of two or more substances in a specific ratio
  11. description of a solid that can be stretched into a long wire
  12. Change of state from a liquid to a solid
  13. slow chemical change that occurs when oxygen in the air reacts with metal

25 Clues: Measure of atomic mass • Solid, liquid, gas and plasma • chemical reaction that absorbs heat • chemical reaction that produces heat • Change of state from a liquid to a gas • Change of state from a gas to a liquid • Change of state from solid to a liquid • Change of state from a liquid to a solid • substance that speeds up chemical reactions • ...

Keystone Vocab 2025-10-15

Keystone Vocab crossword puzzle
Across
  1. proteins that increases the rate of chemical reactions without being used up
  2. Circular DNA molecules that are separate from chromosomal DNA
  3. single-celled organism; lacks a membrane-bound nucleous
  4. what connects to create a polymer
  5. describes a nonliving factor in an ecosystem
Down
  1. a molecule and a different type of molecule connected
  2. composed of many cells
  3. one or more cells containing membran-bond organells
  4. two types of the same molecule bonded
  5. Chemical reaction where chemical bonds in polymers are broken with water present
  6. A substance that attaches to an enzyme in a chemical reaction
  7. describes a living or once-living organism

12 Clues: composed of many cells • what connects to create a polymer • two types of the same molecule bonded • describes a living or once-living organism • describes a nonliving factor in an ecosystem • one or more cells containing membran-bond organells • a molecule and a different type of molecule connected • single-celled organism; lacks a membrane-bound nucleous • ...

7.2 Types of Reactions 2022-03-29

7.2 Types of Reactions crossword puzzle
Across
  1. A chemical reaction in which two compounds exchange positive ions and form two new compounds
  2. A chemical reaction in which one element takes the place of another element in a compound
  3. A chemical reaction in which electrons are transferred from one reaction to another
Down
  1. A chemical reaction in which two or more substances react to form a single substance
  2. A chemical reaction in which a substance reacts rapidly with oxygen, often producing heat and light
  3. A chemical reaction in which a compound breaks down into two or more simpler substances
  4. a substance that undergoes change into products over time

7 Clues: a substance that undergoes change into products over time • A chemical reaction in which electrons are transferred from one reaction to another • A chemical reaction in which two or more substances react to form a single substance • A chemical reaction in which a compound breaks down into two or more simpler substances • ...

Chemical Reactions 2024-04-10

Chemical Reactions crossword puzzle
Across
  1. something that is made of all the same atoms or groups of atoms
  2. the relative size of things
  3. a group of atoms joined together in a particular way
  4. letters and numbers showing the types and number of atoms that repeat to make up a substance (2 words)
  5. the tiny pieces that all matter - all the stuff in the world - is made of
  6. able to cause damage
  7. a substance that is added to soil to help plants grow
  8. the temperature at which a substance changes from the liquid phase to gas phase
Down
  1. a process in which atoms rearrange to form new substances (2 words)
  2. an ending substance that is made during a chemical reaction
  3. an object, diagram, or computer program that helps us understand something by making it simpler or easier to see
  4. the temperature at which a substance changes from the solid phase to the liquid phase (2 words)
  5. to change the order or position of something
  6. a starting substance that is part of a chemical reaction
  7. something that can be observed about a substance, such as color, smell, or boiling point

15 Clues: able to cause damage • the relative size of things • to change the order or position of something • a group of atoms joined together in a particular way • a substance that is added to soil to help plants grow • a starting substance that is part of a chemical reaction • an ending substance that is made during a chemical reaction • ...

Chemistry Vocabularies Game! 2019-10-10

Chemistry Vocabularies Game! crossword puzzle
Across
  1. the total kinetic and potential energy which exists in a system when it is at constant pressure.
  2. the energy existing as a result of an object's position in space, as well as the sum of all the attractive and repulsive forces existing among the particles which make up the object.
  3. an intermediate molecule which occurs when reactants are in the process of rearranging to form products.
  4. a graph showing how the number of particles having a given kinetic energy changes with increasing temperature.
  5. the substances produced by a chemical reaction.
  6. the actual sequence of steps which make up an overall reaction.
Down
  1. a reaction which absorbs heat, so that products have more energy than reactants.
  2. the theory stating that molecules act as small, hard spheres which bounce off each other and transfer energy among themselves during their collisions.
  3. molecules which are produced in one step of a reaction mechanism and subsequently used up in another step.
  4. the slowest step in a reaction mechanism.
  5. the minimum potential energy required to change reactants into an activated complex.
  6. the energy which a system possesses because of movement within the system.
  7. a chemical which can be added to a reaction to increase the rate of the reaction.
  8. the substances being combined in a reaction.

14 Clues: the slowest step in a reaction mechanism. • the substances being combined in a reaction. • the substances produced by a chemical reaction. • the actual sequence of steps which make up an overall reaction. • the energy which a system possesses because of movement within the system. • a reaction which absorbs heat, so that products have more energy than reactants. • ...

Atoms in Chemical reactions 2023-10-17

Atoms in Chemical reactions crossword puzzle
Across
  1. 6 letter word addressed in every class and for students to follow
  2. statement made and then proven using Scientist data
  3. French chemist who discovered Law of Matter
  4. Can only be seen through a microscope
  5. is the ending of a chemical reaction
Down
  1. Law is a verbal or mathematical description of a natural phenomenon.
  2. given to student by teacher when the student does something nice or helpful
  3. shorthand notations that describe chemical reactions
  4. Makes up everything in the world
  5. is the the beginning of a chemical reaction
  6. Chemical formula for water

11 Clues: Chemical formula for water • Makes up everything in the world • is the ending of a chemical reaction • Can only be seen through a microscope • is the the beginning of a chemical reaction • French chemist who discovered Law of Matter • statement made and then proven using Scientist data • shorthand notations that describe chemical reactions • ...

Scince vocbulary 2022-02-24

Scince vocbulary crossword puzzle
Across
  1. A subatomic particle with a negative charge
  2. Combination of 2 or more elements
  3. Where a substance goes through a chemical change
  4. The smallest part of a chemical element
  5. Number in front of symbol
  6. A substance undergoes a chemical reaction
Down
  1. subatomic particle with a positive electrical charge
  2. Substance formed as a result of a chemical reaction
  3. A subatomic particle with a neutral charge
  4. Shows how many atoms of an an element are present

10 Clues: Number in front of symbol • Combination of 2 or more elements • The smallest part of a chemical element • A substance undergoes a chemical reaction • A subatomic particle with a neutral charge • A subatomic particle with a negative charge • Where a substance goes through a chemical change • Shows how many atoms of an an element are present • ...

Chemistry class 10 2022-07-14

Chemistry class 10 crossword puzzle
Across
  1. A reaction involving both oxidation and reduction simultaneously means one reactant gets oxidised, the other gets reduced.
  2. a chemical reaction in which a more reactive element displaces a less reactive element from its compound.
  3. a chemical reaction in which energy is released in the form of light or heat.
  4. a chemical equation in which there are equal numbers of atoms of each element on both sides of the equation
  5. Any substance that increases the rate of a reaction without itself being consumed.
Down
  1. a substance that is formed as the result of a chemical reaction
  2. A reaction in which oxygen atom is added or hydrogen atom is lost.
  3. a reaction in which two reactants combine to form one product.

8 Clues: a reaction in which two reactants combine to form one product. • a substance that is formed as the result of a chemical reaction • A reaction in which oxygen atom is added or hydrogen atom is lost. • a chemical reaction in which energy is released in the form of light or heat. • Any substance that increases the rate of a reaction without itself being consumed. • ...

Chemistry class 10 2022-07-14

Chemistry class 10 crossword puzzle
Across
  1. A reaction involving both oxidation and reduction simultaneously means one reactant gets oxidised, the other gets reduced.
  2. a chemical reaction in which a more reactive element displaces a less reactive element from its compound.
  3. a chemical reaction in which energy is released in the form of light or heat.
  4. a chemical equation in which there are equal numbers of atoms of each element on both sides of the equation
  5. Any substance that increases the rate of a reaction without itself being consumed.
Down
  1. a substance that is formed as the result of a chemical reaction
  2. A reaction in which oxygen atom is added or hydrogen atom is lost.
  3. a reaction in which two reactants combine to form one product.

8 Clues: a reaction in which two reactants combine to form one product. • a substance that is formed as the result of a chemical reaction • A reaction in which oxygen atom is added or hydrogen atom is lost. • a chemical reaction in which energy is released in the form of light or heat. • Any substance that increases the rate of a reaction without itself being consumed. • ...

Chapter 2 Key Terms 2023-09-24

Chapter 2 Key Terms crossword puzzle
Across
  1. The building block of matter; the smallest possible particle of an element
  2. Quality of molecules having an uneven distribution of electrical charge, resulting in some regions of a molecule having negative charge while others are positive.
  3. A substance that can produce hydrogen ions (H+) in solution.
  4. change in a substance that results in one or more new substances being formed that have different physical and chemical properties than those of the original substance.
  5. A class of nonpolar organic compounds that are insoluble in water and are used for energy storage and cell membranes in living things.
  6. A measurement of the average speed of the particles within a substance.
  7. The attraction of particles in one substance for particles in a different substance.
  8. A covalently bonded compound containing the element carbon.
  9. change in a substance that does not change to identity of the substance.
  10. The process by which one substance, the solute, is broken up into smaller pieces by and distributed within a second substance, the solvent.
  11. A pure substance made of only one kind of atom
  12. An attraction between two atoms as a result of sharing or transferring valence electrons.
  13. The physical things that make up the universe or anything that occupies space and has mass.
  14. The process by which particles in solution are evenly distributed throughout the solvent by Brownian motion.
  15. A class of organic compounds that serve as the building blocks for the information storage molecules DNA and RNA.
Down
  1. A class of organic compounds that serve as the building blocks of proteins.
  2. An organic compound comprised of the elements carbon, hydrogen, and oxygen; includes sugars, starch, and cellulose.
  3. The smallest particle of a covalently bonded compound.
  4. A substance that binds to an enzyme and reduces its activity, thus slowing a chemical reaction that the enzyme catalyzes.
  5. The attraction between like particles within polar substances.
  6. A substance that changes the rate of a chemical reaction but is not itself used up or affected by the reaction.
  7. A substance that is present before a chemical reaction and takes part in it, usually shown on the left-hand side of a chemical equation.
  8. Change-
  9. A naturally occurring catalyst, usually a protein.
  10. A pure substance made from two or more elements that are chemically combined.
  11. The ability to do work.
  12. A substance that can produce hydroxide ions (OH-) or accept hydrogen ions (H+) in solution.
  13. The substances formed during a chemical reaction, usually indicated on the right-hand side of the chemical equation.
  14. The tendency of energy to disperse and become less available to do work.
  15. A class of simple organic compounds important in living things as a source of both energy and structure.

30 Clues: Change- • The ability to do work. • A pure substance made of only one kind of atom • A naturally occurring catalyst, usually a protein. • The smallest particle of a covalently bonded compound. • A covalently bonded compound containing the element carbon. • A substance that can produce hydrogen ions (H+) in solution. • ...