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10 Cards in this Set
- Front
- Back
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Gwyn |
Wirick |
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actinisides |
an element in the rare earth elements in the periodic table |
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alkali metal |
an element in group 1 of the periodic table |
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atom |
the smallest partical of an element |
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atomic mass |
the average mass of one atom of an element |
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atomic number |
the number of protons in the nucleus of an atom |
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compound |
a substance made of two or more elements chemically combined |
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electron |
a tiny negatively charged particle that moves around the nucleus of an atom |
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element |
a substance that cannot be broken down into other substances by chemical or physical means |
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o |
o |
