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10 Cards in this Set
- Front
- Back
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Absolute zero
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approximately -273 C; the lowest possible tempature
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Acid
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a compound that releases hydrogen ions when dissolved in water; has a ph of less than 7
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Algae
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simple,one- celled plantlike organism found in water or damp places; includes seaweeds,pond scum, and so on.
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Alloy
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A substance composed of two or more metals.
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Atmosphere
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the layer of air surrounding Earth
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Atmospheric Pressure
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The pressure exerted bgy the atmosphere of every part of Earth's surface; approximately 10 newtons per square centimeter.
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Atom
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the smallest part of an element that is recognizable as that element.
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Barometer
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An instrument that measures atmospheric pressure
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Base
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a compound that releases hydroxide ions in water; has a pH of more than 7; is sometimes called an alkali
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Boiling point
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the temperature at which additional thermal energy causes a substance to change from a liquid to a vapor.
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