| A | B |
|---|
| anion | negatively charged ion |
| cation | positively charged ion |
| polyatomic ion | ion containing two or more atoms |
| ionic compound | substance composed of positive and negative ions |
| neutron | subatomic particle possessing no electrical charge |
| electron | subatomic particle possessing negative electrical charge |
| proton | subatomic particle possessing positive electrical charge |
| diatomic molecule | molecule made up of two atoms |
| element | fundamental chemical substance from which all other substances are made |
| atom | smallest particle possessing the properties of an element |
| molecule | smallest part of a substance retaining the properties of the substance |
| pure substance | an element or compound - a material with uniform and definite composition and distinct properties |
| compound | substance composed of two or more elements in fixed proportions that cannot be broken down into simpler substances by physical means |
| solute | dissolved susbstance in a solution, usually the component present in smaller quantitites - gets dissolved |
| solvent | dissolving agent in a solution, usually the component present in the larger quantity - does the dissolving |
| solution | homogeneous mixture of two or more substances |
| aqueous solution | solution in which water is the solvent |
| homogeneous mixture | mixture that IS uniform throughout |
| heterogeneous mixture | mixture that is NOT uniform throughout |
| physical property | a property that can be observed or measured without changing the identity of the sample of matter |
