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| the smallest part of any substance and the periodic table of elements lists the atoms |
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| the center of an atom, it contains protons and neutrons |
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| provides the number of protons and electrons in an atom |
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| based on the number of protons and neutrons in an atom |
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| positively charged particle of an atoms that is found in the nucleus |
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| particle with 0 charge and is found in the nucleus of an atom |
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| negatively charged particle found in energy clouds that surround the nucleus |
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| packet of light energy given off when an electron falls back to a lower energy level in an atom |
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| all electrons are in the lowest possible energy levels |
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| atom that has electrons that have jumped to higher energy levels |
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| horizontal rows of the periodic table |
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| vertical columns of the periodic table |
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| atom that has gained or lost neutrons |
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| two or more elements chemically combined |
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| substances that are physically combined |
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| mixture with one substance dissolved in another |
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| small amount of solute present in the solution |
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| solution is 100% full and no more solute can be dissolved at that temperature |
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| amount of solute needed for saturation at a certain temperature |
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| a mixture of particles that are not dissolved and they can be separated |
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| suspension that has small particles that remain mixed |
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