| A | B |
|---|
| characteristic properties | properties for given substance that never change, and are used to identify unknown substances |
| boiling point | temperature at which a liquid boils |
| melting point | temperature at which a solid melts |
| mixture | two or more substances that mix together, but are nto chemically combined |
| solution | mixtures that are so well blended, they act like a single substance |
| elements | pure substances that cannot be broken down into another substance |
| compound | pure substance formed from chemical combinations of two or more elements |
| atom | the smallest particles of an element |
| molecule | a group of atoms that are joined together and act as a single unit |
| ore | a rock that contains a metal or other economically useful element |
| bond that holds molecules together | chemical bond |
| Equation for Density | Mass divided by volume |
| SI unit for mass | kilogram |
| weight | measure of the force of gravity on an object |
| mass | measure of the amount of matter an object contains |
| chemical change | when one or more substances combine to form a new substance |
| physical change | alters the form of a substance, but not its identity |
