| A | B |
|---|
| the materials that enter a chemical reaction | reactants |
| the materials procuded in a chemical reaction | products |
| the substances on the left of the yield sign | reactants |
| the substances on the right of the yield sign | products |
| the arrow in the middle of the chemical equation is the | yield sign |
| states that mass cannot be created or destroyed | Law of Conservation of Mass |
| a balanced equation has the same number of reactants and | products |
| numbers written behind and below the symbol | subscripts |
| equations are balanced using | coefficients |
| when 1 element changes places with another in a chemical reaction | single replacement |
| when elements in 2 different compounds change partners in a chemical reaction | double replacemnt |
| when a compound breaks into its constituent parts | decomposition |
| when 1 or more elements combine to form a single compound | synthesis |
| exothermic reactions are those that | give off heat |
| endothermic reactiosn are those that | absorb heat |
| the energy needed to complete a reaction | activation energy |
| the study of reaction rates | kinetics |
| gases are usually expressed as _____ molecules | diatomic |
| An increase in temp will generally cause the reaction rate to | increase |
| An insoluble compound formed in a double replacement reaction | precipitate |
| Double replacement reactions involve _____ compounds | ionic |
| C and O combine to form CO in a ____ reaction | synthesis |
| Peroxide releases oxygen gas in a ___ reaction | decomposition |
| Hydrogen + chlorine --> | hydrogen chloride |
| Magnesium + oxygen ---> | magnesium oxide |
| Peroxide becomes water and oxygen gas in a | decomposition reaction |
| 4 calcium carbonate molecules contain __ oxygen atoms | 24 |
| Is used to specifiy the number of times an atom appears in a formula | subscript |
| Is used to represent the number of molecules needed in a reaction | coefficient |
| carbon and oxygen unit to form carbon monoxide in a __ reaction | synthesis |
| a metal reacts with acid to release hydrogen gas in a __ reaction | single replacement |
| If two liquids react and form a solid that falls out of solution you have a | precipitate |
| tarnishing is a ___ reaction | chemical |
| boiling is a ___ reaction | physical |
| corrosion is a __ reaction | chemical |
| the products of a combustion reaction include | water and carbon dioxide |
