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22 Cards in this Set
- Front
- Back
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Actinides |
an element in the 2nd row of the p.t. |
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Alkali metal |
an element in group 1 in the p.t. |
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Atom |
a small particle that makes everything. |
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Atomic Mass |
the average mass of one atom.
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Atomic Number |
the number of protons. |
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Compound |
a pure substance that forms when 2 or more elements. |
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Electron |
a negatively charged subatomic particle |
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Element |
a substance that forms all other substances. |
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Group |
a vertical column in the periodic table |
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Halogens Family |
the elements in group 17 of the periodic table. |
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Lathanides |
an element in the first row of the rare earth elements in the periodic table |
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Matter |
anything that takes up space. |
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Metal |
an element of a hard shinny substance. |
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Metalloid |
an element that has some of the characteristics of metals and some of the characteristics of nonmetals. |
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Neutron |
a small particle in the nucleus of the atom. |
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Nobel Gases |
an element in group 18 of the periodic table. |
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Nonmetal |
an element that lacks metals. |
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Nucleus |
the central core of an atom containing protons and neutrons. |
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Period |
a horizontal row of elements in the periodic table. |
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Periodic Table |
a chart of elements. |
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Proton |
a small positively charged particle in the middle of a atom. |
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Corey smith |
5th period class |
