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Related Flashcards
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Cards In This Set
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Matter
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Anything that has mass and occupies space
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Energy
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The ability to cause changes in matter
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Order of scientific method
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Observations > Hypothesis > Experiments > Law/theory
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Law
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A generally observed natural phenomenon
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Theory
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A general explanation of natural phenomenon
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Characteristics of solid
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-definite shape
-definite volume
-high density
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Characteristics of liquid
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-indefinite shape
-definite volume
-high density
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Characteristics of gas
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-indefinite shape
-indefinite volume
-low density
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Sublimination
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The process which a solid turns into a gas
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Substance
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Sample of matter that cannot be decomposed into simpler substances by physical means
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Element
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Substance that cannot be decomposed into simpler substances by chemical means
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Compound
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Substance that has 2 or more elements combined chemically
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Temperature conversion formulas
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F = 1.8 X C + 32
K = C + 273.15
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Molecular compounds
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-composed of 2 or more nonmetals covalently bonded
-share electrons
-weakly attracted
-gases, liquids, low melting pt. solids
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Ionic compounds
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-composed of cations (metals) and/or anions (nonmetals) that are monatomic or polyatomic
-transfer electrons
-strongly attracted- forms 3-D crystalline structures
-high melting point sollids
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