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7 Cards in this Set
- Front
- Back
conservation of mass |
matter is not created or destroyed during a chemical reaction |
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hypothesis |
a tentative explanation for an observation, phenomenon, or scientific problem that can be tested by further investigation |
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independent variable |
the one factor a scientist changes in an experiment |
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atomic number |
then number of protons in the nucleus of an atom |
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atomic weight |
the average mass of all the isotopes of an element |
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mole |
the number of atoms of substances equal to the number of atoms in 12g of carbon 12: 6.022 x 10 to the 23 power atoms |
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bias |
influence in favor of or against something, usually in a way considered to be unfair |