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| Tiny building blocks made up of mostly empty space, which make up matter. Can combine to form molecules. |
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| Perpetual jiggling of particles resulting from collisions between visible particles and invisible atoms. |
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| Where nearly all the mass of an atom is concentrated. |
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| Thermonuclear Fusion Reaction |
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Definition
| When nuclei of 2 or more atoms are squashed into contact. |
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| Principal building block of the nucleus |
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| Nucleon in an electrically neutral state. |
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| Nucleon in an electrically charged state (positively charged). |
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| When a substance is composed of atoms of the same kind. |
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| Number of protons in an atom. |
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| Helium,Neon,Argon,Krypton, and Radon. |
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| The theory of the small-scale world that includes predicted wave properties of matter. |
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| Atoms of the same element that contain different numbers of neutrons. |
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| Used to identify isotopes, The total number of protons and neutrons in the nucleus. |
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| The total mass of an atom (sum of the masses of all the atom's components). |
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| A pure chemical material that consists of more than one kind of atom. |
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| A substance that is mixed together with out chemically bonding. |
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| Consists of 2 or more atoms held together by the sharing of electrons. |
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| Any process in which atoms rearrange to form different molecules. |
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| Composed of atoms with negative nuclei and positive electrons. |
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| Matter we can't see that tugs on stars and galaxies that we can see. |
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