| A | B |
|---|
| Acid | A substance containing hydrogen that dissociates to form hydrogen ions when dissolved in water; any substance with a pH less than 7.0 |
| Acidity | The measure of how may hydrogen ions a solution contains |
| Alkalinity | The measure of how many hydroxyl ions a solutions contains |
| Base | A substance that gives off hydroxyl ions when dissolvedin water; any substance with a pH above 7.0 |
| Buffering | Resistance to change in acidity or alkalinity |
| Concentration | A measure of the amount of dissolved substance contained per unit of volume |
| Hydroxyl | The chemical group or ion OH that consists of one atom of hydrogenand one of oxygen and is neutral or positively charged |
| Hypothesis | A statement that can be tested experimentally |
| Ion | An atom or group of atoms carrying an electrical charge that may be positive or negative |
| Neutral | Exhibiting neither acid nor alkaline qualities |
| Nutrient absorption | In animals, the passage of digested food from the alimentary tract to the circulatory system. In plants, the intake of water, gases, nutrients, or other substances |
| pH | A numerical measure of acidity or hydrogen ion activity of a substance |
| pH Scale | A numeric range that quantifies the relative concentrations of hydronium ions and hydroxide ions in a solution |
