| A | B |
|---|
| acid | a chemical substance that reacts with metals to release hydrogen |
| base | a chemical compound made up of a metal combined with OH-ion |
| hydroxyl ion | a combination of one hydrogen and one oxygen atom, with an extra electron |
| indicator | a chemical that changes color in acids and bases |
| neutral | neither acid nor basic |
| neutralization | mixing an acid and a base to produce a salt and water |
| salt | a chemical produced by the reaction between an acid and a base |
| conductivity tester | an instrument used to see if solutions conduct electricity |
| electrolyte | a substance that can make water conduct electricity |
| non-electrolyte | a substance that will not make water conduct electricity |
| ion | a charged particle |
| ionization | to separate into ions |
| pollutant | material that makes the environment dirty |
| smog | a mixture of smoke, fog, and chemicals |
| reservoir | a large body of water used to supply drinking water |
| aqueduct | a means of sending water ffrom one place to another |
| fertilizer | a chemical used to help plants grow |
| algae | microscopic green plants |
| pesticide | a chemical used to destroy pests, such as rats, mice, and harmful insects |
