| A | B |
|---|
| compound | a combination of elements that has different properties from the elements that make it up |
| Hoffman apparatus | a device that can break water down into its elements |
| chemical formula | a shorthand way to write the name of a compound |
| subscript | a number in a formula that tells you how much of an element is in the compound |
| crystal | a piece of a solid that is shaped like a jewel |
| oxidation | combining with oxygen |
| rusting | the slow oxidation of iron |
| burning | fast oxidation |
| limewater | a chemical that turns milky-white when it mixes with carbon dioxide |
| physical change | a change that does not produce a new substance |
| chemical change | a change that produces new substances |
| chemical reaction | a change that produces one or more new substances |
| chemical equation | a way of telling about a chemical reaction with symbols and formulas |
| yield | produce |
| coefficient | a number that tells how many molecules of a substance are needed or produced in a reaction |
| balance | make the number of atoms of each element the same on both sides of an equation |
| mixture | two or more substances put together that can be separated by physical means |
| dissolve | to break up into molecules and spread out through a liquid |
| filter | a material with tiny holes or spaces that can separate a solid from a liquid |
