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13 Cards in this Set
- Front
- Back
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variable
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anything that can change in an experiment
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whats the difference between precision and accuracy?
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precision- the degree of exactness of a measurement
accuracy- the extent to which the measurement approaches the true value |
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element
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a substance that cannot be broken down into simpler substances
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compound
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a substance made of atoms of more than one simple machine
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pure substances
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any matter that has a fixed composition and definite properties
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mixtures
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a combination of more than one pure substance
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miscible
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describes two or more liquids that are able to dissolve into each other in various proportions
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immiscible
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describes 2+ liquids that dont mix into each other
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viscosity
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resistance of a fluid to flow
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chemical properties
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the way a substance reacts with others to form new substances with different properties
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physical properties
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a characteristic of a substance that can be observed or measured without changing the composition of the substance
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formula for density
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D=m/v
MD/V |
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wats the difference between theories and laws?
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Theory
*explanation that has been tested *always questioned and examined *simple (kinetic theory) Law *about anture *no explanation repeated observations (wat goes up must come down) |
