| A | B |
|---|
| boiling point | The temperature of a liquid where its vapor pressure equals the pressure exerted on its surface |
| chemical property | a property that can be observed only when there is a change in the composition of a substance. |
| compound | A chemical combination of two or more different elements joined together in a fixed proportion. |
| density | The amount of matter (mass) in a given space (volume). |
| element | Any substance that cannot be broken down into a simpler one by a chemical reaction. |
| chemical formula | A combination of the chemical symbols that show what elements make up a compound and the number of atoms of each element. |
| mass | The measure of the amount of matter an object contains. |
| matter | Anything that takes up space and has mass. |
| melting point | The temperature of a solid when its crystal lattice disintegrates. |
| mixture | A comination of two or more substances in which the basic identiy of each substance is not changed. |
| pH | A mathematical scale in which the concentration of hydronium ions in a solution is expressed as a number from 0 to 14. |
| physical change | A change in matter where its identity does not change. |
| physical property | A characteristic of matter that is exhibited without a change of idenity. |
| pure substance | Matter with the same fixed composition and properties. |
| solubility | A measure of one substance's ability to dissolve in a specific amount of another substance at standard temperature and pressure. |
| solute | The substance that is being dissolved when making a solution. |
| solution | A mixture that is the same throughout, or homogeneous. |
| solvent | The substance that dissolves the solute when making a solution. |
| chemical change | The change of one or more substances into other substances. |
