| A | B |
|---|
| Acid | anything with a ph below 7 |
| base | anything with a ph above 7 |
| Buffer | something that is used to prevent large changes in ph |
| Hydrogen bond | attraction between hydrogen and oxygen molecules |
| mixture | two materials that are put together that stay unchanged |
| pH | a measure of how acidic or basic a material is |
| Polar molecule | molecules with an uneven charge |
| Solute | part of a solution that is dissolved |
| solution | mixture made by dissolving materials |
| solvent | part of a mixture that does the dissolving |
| atom | building blocks of matter |
| compound | a material made up of 2 or more elements |
| Electron | negative part of an atom |
| element | pure substance that can't be broken down |
| Ion | a charged atom |
| Ionic bond | holds molecules together by (stealing) moving electrons |
| covalent bond | holds molecules together by sharing electrons |
| isotope | atoms of the same element that have different masses |
| molecule | smallest part of a compound |
| neutron | neutral part of an atom |
| nucleus | the center of an atom |
| proton | positive part of an atom |
| Van der Waals force | very weak attractions between molecules |
