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18 Cards in this Set
- Front
- Back
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Chemistry
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The science that deals with the structure of matter and the changes it can undergo.
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Chemical change/reaction
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Substances are used up and others are formed to take their places.
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Physical change
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The identities of the substance do not change. Involves changes of state.
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Scientific method
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A tool used in science and medicine to test hypotheses and theories by collecting facts.
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Fact
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A statement based on direct experience. It is a consistent and reproducible observation.
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Hypothesis
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A statement that is proposed, without actual proof, to explain facts and their relationship
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Theory
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The formulation of an apparent relationship among certain observed phenomena, which has been verified to some extent.
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Exponential notation
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A method based on the powers of 10 used to handle large and small numbers.
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Significant figures
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Which digits convey information
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Metric system
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system of measurement
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Factor-label method
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Units are multiplied and divided in conversions from one unit to another
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Three states of matter
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solid, liquid, gas
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Density
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Mass per unit of volume
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Specific gravity
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Density relative to water and thus has not units.
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Kinetic energy
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Energy of motion
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Potential energy
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Stored energy
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Heat
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A form of energy and is measured in calories.
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Specific heat
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Physical constant. The number of calories required to raise the temperature of 1g of a substance by 1 degree C
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