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Law of Conservation
Law of Conservation of Mass
| Question | Answer |
|---|---|
| chemical reaction | a process that involves a rearrangement of atoms, molecules, or ions. |
| Law of Conservation of Mass | mass is neither created nor destroyed |
| balanced chemical equation | same number of each element on both sides of the equation |
| mass of products equals | mass of reactants |
| coefficients | numbers that are before the formula |
| reactants | what goes in (usually on the left hand side of the chemical equation) |
| products | what comes out (usually on the right hand side of the chemical equation) |
| Open system | Matter can enter or escape the system |
| Closed system | Matter is not allowed to enter or leave the system. |