Chapter6Terms
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| An ______ is a compound that releases hydrogen ions, H+, in aqueous solutions. | Acid
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| A ______ is a compound that produces hydroxide ions, OH-, in aqueous solutions. | Base
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| ______ 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
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| ______ are neither acidic nor basic, that is, they have equal concentrations of H+ and OH- ions. | Neutral solutions
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| ______ is a number, usually between 0 and 14, that indicates the acidity of a solution. | pH
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| ______ is more acidic than "normal" rain and has a lower pH value. | Acid rain
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| 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
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| ______, literally means "acids without water". | Acid anhydrides
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| Iron coated with zinc is called ______. | Galvanized iron
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| ______ means that it readily absorbs water from the atmosphere and retains it. | Hygroscopic
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| ______ are compounds of nitrogen that are biologically active, chemically active, or active with light in our atmosphere. | Reactive nitrogen
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| ______ remove nitrogen from the air and convert it to ammonia. | Nitrogen-fixing bacteria
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| ______ is the process of converting ammonia in the soil to the nitrate ion. | Nitrification
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| ______ is the process of converting nitrates back to nitrogen gas. | Denitrification
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| ______ is a set of chemical pathways whereby nitrogen moves through the biosphere. | Nitrogen cycle
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| The capacity of a lake or other body of water to resist a decrease in pH is called its ______. | Acid-neutralizing capacity (ANC)
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| ______ 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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