| A | B |
|---|
| chemical reaction | process in which new substances with new physical and chemicals properties are formed |
| reactant | a substance changed in a chemical reaction |
| product | a substance formed in a chemical reaction |
| law of conservation of matter | law that states that matter cannot be created or destroyed by a chemical change |
| chemical equation | statement where chemical formulas are used to describe a chemical reaction |
| coefficient | shows how many molcules of a substance are involved in a chemical reaction |
| oxidation | chemical change in which electrons are lost |
| reduction | chemical change in which electrons are gained |
| synthesis reaction | substances combine to form a more complex substance |
| decomposition reaction | when a complex substance is broken down into two or more simpler substances |
| electrolysis | process by which a substance is decomposed using an electric current |
| single-replacement reaction | when one element replaces another element in a compound |
| double-replacement reaction | when elements from two different compounds replace each other, forming two new compounds |
| precipitate | solid that settles to the bottom of a mixture |
