| A | B |
|---|
| ph | measure of how acidic or basic a solution is |
| pH scale | a scale ranging from zero to 7 (acid0 to 2-14(neutral) |
| acid | any substance that forms hydrogen ions |
| base | any substance that forms hydroxide ions in water |
| water is | polar |
| hydrogen bond | the attraction between polar molecules |
| mixture | combination of substances in which the individual components retain their properties |
| solution | mixture in which one ormore substances are distributed evenlly |
| metabolism | all the chemical reactions that occur within an organism |
| ion | a charged particle |
