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| the smallest type of matter in the universe |
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| the parts of an atom and where they are located |
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| subatomic particle with a negative charge |
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| a subatomic particle with a positive charge |
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| a subatomic particle with no charge |
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| surrounds the nucleus, consist of protons and neutrons |
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| the center of the atom, consist of protons and neutrons |
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| when chemical substances (elements) are being held together by the attraction of atoms to each other, through the sharing or exchanging of electrons |
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| are the electrons in the last shell or energy level of an atom. They can participate in the formation of a chemical bond. |
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| an atom in which the total number of electrons is not equal to the total number of protons, giving the atom a positive or negative electrical charge |
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| formed when an atom loses electrons, making the atom positively charged |
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| is formed when an atom gains electrons, making atom negatively charged |
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| a chemical substance consisting of two or more different chemically bonded elements |
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| One of two or more atoms having the same atomic number but different mass numbers. |
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| the science that deals with the earth's physical structure and substance, its history, and the processes that act on it. |
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