Physical Science - Chapter 7 - Vocabulary

Front 1

a substance that participates in a chemical reaction

Back 1

• Reactant

Front 2

a substance that forms in a chemical reaction

Back 2

• Product

Front 3

energy that is stored in the form of chemical bonds

Back 3

• Chemical Energy

Front 4

a chemical reaction in which energy is released to the surroundings as heat

Back 4

• Exothermic Reaction

Front 5

a chemical reaction in which more energy is needed to break the bonds in the reactants than is given off by forming bonds in the products

Back 5

• Endothermic Reaction

Front 6

uses symbols to represent a chemical reaction and shows the relationship between the reactants and products of a reaction

Back 6

• Chemical Equation

Front 7

proportion of reactants and products in a chemical reaction

Back 7

• Mole Ratio

Front 8

a reaction in which multiple substances combine to form a new compound

Back 8

• Synthesis Reaction

Front 9

reactions in which substances are broken apart

Back 9

• Decomposition Reaction

Front 10

one atom or ion replaces another atom or ion in a compound

Back 10

• Single-displacement Reaction

Front 11

two atoms or ions appear to replace one another in compounds

Back 11

• Double-displacement Reaction

Front 12

organic compounds that react with oxygen

Back 12

• Combustion Reaction

Front 13

an atom or group of atoms that has one unpaired electron

Back 13

• Free Radical

Front 14

one substance loses electrons and another substance gains electrons

Back 14

• Oxidation-reduction Reaction

Front 15

a substance that speeds up or slows down a reaction but is not changed by the reactions

Back 15

• Catalyst

Front 16

a catalyst produced by a living thing

Back 16

• Enzyme

Front 17

a reaction that is acted on, or catalyzed, by an enzyme

Back 17

• Substrate

Front 18

a reaction that proceeds equally in both directions

Back 18

• Chemical Equilibrium