| A | B |
|---|
| acid | substance that tastes sour, reacts with metals and carbonates, and turns blue litmus paper red |
| acid rain | rain that is more acidic than normal; caused by the release of molecules of sulfer dioxide and nitrogen oxide into the air |
| base | a substance that tastes bitter, feels slippery, and turns red litmus paper blue |
| chemical digestion | the process that breaks large food molecules into smaller molecules |
| concentrated solution | a mixture that has alot of solute dissolved in it |
| digestion | the process by which the boby breaks down food into smaller nutrient molecules |
| dilute solution | a mixture that has little solute dissolved in it |
| enzyme | a protein that speeds up chemical reactions in the bodies of living things |
| hydrogen ion (H+) | a positively charged ion formed of a hydrogen atom that has lost its electron |
| hydroxide ion (OH-) | a negetively charged ion made of oxygen and hydrogen |
| mechanical digestion | the physical process that tears, grinds, and mashes large food particles into smaller pieces |
| neutralization | a reaction between an acid and a base |
| indicator | a compound that changes color in contact with an acid or a base |
| pH scale | a range of values from 0 to 14 that expresses the concentration of hydrogenions in a solution |
| salt | an ionic compound that can form from the nuetralization of an acid with a base |
| saturated solution | a mixture that has as much solution in it as possible at a given temperature |
| solubility | a measure of how well a solution can dissolve in a solvent at a given temterature |
| solute | the part of a solution present in a lesser amount and that is dissolved by the solvent |
| solution | a very well-mixed mixture, having the same properties throughout; a mixture in which one substance is dissolved in another |
| solvent | the part of a solution that is present in the largest amount and dissolves a solute |
| suspension | a mixture in which particles can be seen and easily seperated by settling or filtration |
| unsaturated solution | a mixture in which more solute can be dissolved |
