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Chem.2
Chapter6Terms
| Question | Answer |
|---|---|
| An ______ is a compound that releases hydrogen ions, H+, in aqueous solutions. | Acid |
| A ______ is a compound that produces hydroxide ions, OH-, in aqueous solutions. | Base |
| ______ is a chemical reaction in which the hydrogen ions from an acid combine with the hydroxide ions from a base to form water molecules. | Neutralization |
| ______ are neither acidic nor basic, that is, they have equal concentrations of H+ and OH- ions. | Neutral solutions |
| ______ is a number, usually between 0 and 14, that indicates the acidity of a solution. | pH |
| ______ is more acidic than "normal" rain and has a lower pH value. | Acid rain |
| The term ______ includes wet forms such as rain, snow, fog, and cloud-like suspensions of microscopic water droplets often more acidic and damaging than acid rain. It also includes the "dry" forms of acids. | Acid deposition |
| ______, literally means "acids without water". | Acid anhydrides |
| Iron coated with zinc is called ______. | Galvanized iron |
| ______ means that it readily absorbs water from the atmosphere and retains it. | Hygroscopic |
| ______ are compounds of nitrogen that are biologically active, chemically active, or active with light in our atmosphere. | Reactive nitrogen |
| ______ remove nitrogen from the air and convert it to ammonia. | Nitrogen-fixing bacteria |
| ______ is the process of converting ammonia in the soil to the nitrate ion. | Nitrification |
| ______ is the process of converting nitrates back to nitrogen gas. | Denitrification |
| ______ is a set of chemical pathways whereby nitrogen moves through the biosphere. | Nitrogen cycle |
| The capacity of a lake or other body of water to resist a decrease in pH is called its ______. | Acid-neutralizing capacity (ANC) |
| ______ occurs when an area is overloaded with "nitrogen", that is, when the reactive forms of nitrogen entering an ecosystem exceed the system's capacity to absorb the nitrogen. | Nitrogen saturation |
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