Physical Science - Ch 7 Flashcards
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| 16308030017 | reactant | -a substance or molecule that participates in a chemical reaction | 0 | |
| 16308030018 | product | -a substance that forms in a chemical reaction | 1 | |
| 16308030019 | chemical reaction | -process that changes one set of chemicals into another set of chemicals |  | 2 |
| 16308030020 | exothermic | -reactions that release energy are called ___________________ |  | 3 |
| 16308030021 | endothermic | -reactions that absorb energy are called _____________ |  | 4 |
| 16308030022 | endothermic | -photosynthesis is an (endothermic, exothermic) reactions | 5 | |
| 16308030023 | chemical equation | -this type of equation uses symbols to represent a reaction | 6 | |
| 16308030024 | balanced | -when the number of atoms is the same on both sides, a chemical equation is _______________ |  | 7 |
| 16308030025 | mole ratio | -a balanced equation tells you the _______ __________or proportion of reactants and products |  | 8 |
| 16308030026 | synthesis | -a reaction in which several substances combine to form a new compound |  | 9 |
| 16308030027 | decomposition | -reactions in which ONE reactant is broken apart |  | 10 |
| 16308030028 | combustion | -this reaction is one which uses oxygen as a reactant |  | 11 |
| 16308030029 | single-displacement | -reaction in which ONE element takes the place of another element | 12 | |
| 16308030030 | double displacement | -reaction in which TWO compounds appear to exchange ions | 13 | |
| 16308030031 | synthesis | -the formation of water from hydrogen and oxygen is an example of this type of reaction |  | 14 |
| 16308030032 | combustion | -the formation of carbon monoxide is this type of reaction |  | 15 |
| 16308030033 | decomposition | -digestion is an example of this type of reaction | 16 | |
| 16308030034 | decomposition | -cracking (forming gas from crude oil) is an example of this type of reaction | 17 | |
| 16308030035 | oxidation-reduction | -type of reaction in which one part loses electrons an another part gains electrons | 18 | |
| 16308030036 | redox | -oxidation-reduction reactions are also called _______________ reactions | 19 | |
| 16308030037 | redox | -rusting is an example of this type of reaction | 20 | |
| 16308030038 | higher | -most reactions go faster at (lower, higher) temperature | 21 | |
| 16308030039 | speed up | -a large surface area (slows down, speeds up) reactions | 22 | |
| 16308030040 | higher | -reactants with (lower, higher) concentrations will react faster. | 23 | |
| 16308030041 | higher | -reactions are faster at (higher, lower) pressure | 24 | |
| 16308030042 | catalyst | -this substance speeds up or slows down a reaction, but is not changed by a reaction |  | 25 |
| 16308030043 | enzymes | -these substances are catalysts for chemical reactions in living things | 26 | |
| 16308030044 | substrate | -the reactant that is catalyzed or acted upon by an enzyme | 27 | |
| 16308030045 | equilibrium | -the balance in which the rate of a forward reaction equals the rate of the reverse reaction |  | 28 |
| 16308030046 | double arrow | -equations for reversible equations use a __________________ arrow to show that one equation goes from left to right and the other one goes from right to left |  | 29 |
| 16308030047 | gains | -the elements that is reduced (gains, loses) electrons | 30 | |
| 16308030048 | loses | -the element that is oxidized (gains, loses) electrons | 31 | |
| 16308030049 | exothermic | -the explosion of fireworks is an example of a _______________ reaction | 32 |