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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, phenomonon, 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 |
The number of protons in the nucleus of an atom. |
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atomic wieght |
the average mass of all the isotopes of an element |
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mole |
the number of atoms of an substance . |
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Bias |
influence in favor of or against something usually in a way considered to be unfair. |