| A | B |
| Suspension | A mixture in which particles can be seen and easily separated by settling or filtration |
| Solution | A very well mixed mixture, having the same properties throughout |
| Solvent | The part of a solution that is present in the largest amount and dissolves a solute |
| Solute | The part of a solution present in a lesser amount and dissolved by the solvent |
| Colloid | A mixture with small undissolved particles that do not settle out |
| Dilute Solution | A mixture that has only a little solute dissolved in it |
| Concentrated Solution | A mixture that has a lot of solute dissolved in it |
| Solubility | A measure of how well a solute can dissolve in a solvent at a given temperature |
| Saturated Solution | A mixture that contains as much solute in it as possible at a given temperature |
| Unsaturated Solution | A mixture in which more of the same solute can be dissolved |
| Supersaturated Solution | A mixture that has more dissolved solute than is predicted by its solubility at the given temperature |
| Acid | A substance that tastes sour, reacts with metals and carbonates, and turns blue litmus red |
| Indicator | A compound that changes color when in contact with an acid or a base |
| Base | A substance that tastes bitter, feels slippery, and turns red litmus blue |
| Hydrogen Ion | A positively charged ion (H+) formed of a hydrogen atom that has lost its electron |
| Hydroxide Ion | A negatively charged ion (OH-) made of oxygen and hydrogen |
| pH Scale | A range of values from 0 to 14 that expresses the concentration of hydrogen ions in a solution |
| Acid Rain | Rainwater that is more acidic than normal rainwater |
| Neutralization | A reaction between an acid and a base |
| Salt | An ionic compound that can form from the neutralization of an acid with a base |
| Digestion | The process that breaks down complex molecules of food into smaller molecules |
| Mechanical Digestion | The physical process that tears, grinds, and mashes large food particles into smaller ones |
| Chemical Digestion | The process that changes large food molecules into smaller molecules |