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| positively charged particle found in the nucleus of the atom |
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| neutrally charged particle found in the nucleus of the atom |
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| negatively charged particle found orbiting the nucleus of the atom. Helps bind atoms together to form compounds. |
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| tells us the number of protons |
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| tells us the number of protons + neutrons |
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| used a glass tube with just a few atoms in it, a magnet, and electricity. We learned that electrons exist, and that bigger atoms don't make a very fast bend in a beam |
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| used gold foil, radioactive polonium, and photographic paper. Found out that most of the atom is empty space, and that positive charges are in the nucleus. |
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| Plum pudding model of the atom |
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| idea that protons and electrons are scattered randomly around the atom. Was proven incorrect by Rutherford's experiment. |
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| smallest particle of an element. Since we can't see it, we call it a theory. Explains how compounds are formed. |
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