| A | B |
|---|
| endothermic | a chemical reaction that absorbs heat from the environment |
| exothermic | a chemical reaction that releases heat into the environment |
| collision theory | two substances will react when they collide with the correct amount of energy and in the correct orientation |
| Conservation of Matter | atoms are not created or destroyed during a chemical reaction |
| precipitate | a solid that forms in a solution during a chemical reaction |
| soluble | able to be dissolved in a particular substance |
| insoluble | unable to be dissolved in a particular substance |
| dissolving | when particles of a substance are separated by a solvent so that they seem to disappear into a solution |
| synthesis | a chemical reaction where two or more simple substances combine to make a more complex substance; also called formation or combination |
| decomposition | a chemical reaction where a complex substance breaks down into two or more simpler substances |
| single replacement | a chemical reaction where one element replaces another in a compound |
| double replacement | a chemical reaction between two compounds where the positive ion of one compound siwtches places with the positive ion of the other compound |
| neutralization | a chemical reaction where an acid and a base combine to produce water and an ionic compound |
| combustion | a chemical reaction where oxygen reacts with a fuel to produce carbon dioxide, water, heat and light |
| acid | a substance which gives off hydrogen atoms when in solution |
| base | a substance which accepts hydrogen atoms when in solution |
| diatomic elements | elements that naturally exist as two atom moleucles; all "gen" elements and the halogen family |
