| A | B |
| physical change | occurs when some properties of a material change, but the substances in the material stay the same |
| viscosity | resistance to flowing |
| density | the ratio of a material's mass to its volume |
| solubility | the maximum amount of solute that normally dissolves in a given amount of solvent at a certain temperature |
| conductivity | ability to allow heat or electric charges to flow |
| malleability | ability of a solid to be hammered without shattering |
| melting point | temperature at which a substance changes from solid to liquid |
| boiling point | temperature at which a substance changes from a liquid to a gas |
| chemical change | occurs when a substance reacts and forms one or more new substances |
| flammability | ability to burn in the presence of oxygen |
| reactivity | how readily a substance combines chemically with other substances |