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22 Cards in this Set
- Front
- Back
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chemistry |
the study of matter, its composition, and its changes |
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matter |
anything that has mass and takes up space |
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mass |
a measurement that reflects the amount of matter |
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weight |
the effect of Earth’s gravitational pull on a mass |
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qualitative |
sensory or descriptive data or information |
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quantitative |
numerical data or information |
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independent variable |
chosen to be changed systematically by the experiment |
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dependent variable |
measured in response to changes in the independent variable |
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control |
baseline or standard for comparison of changes in the dependent variable |
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theory |
an explanation of a natural phenomenon (based on many observations over time) |
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scientific law |
a relationship in nature that has been supported by many experiments (and agreed by peer review to be a useful model) |
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pure research |
gain knowledge for its own sake |
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applied research |
solve a specific problem |
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derived units |
are defined by a combination of base units |
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density formula |
D= m/v |
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accuracy |
how close measured answers are to the accepted value |
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precision |
how close a series of measurements are to each other |
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percent error formula |
experimental value - accepted value _____________________________________ x 100% accepted value |
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percent deviation formula |
estimated deviation _____________________ x 100% measured value |
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what variable goes on the x axis? |
the independent variable |
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what variable goes on the y axis? |
the dependent variable |
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what are the SI base units? |
s, m, kg, K, mol, A, cd |
