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Definition
| smallest possible particle of an element |
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Definition
| subatomic particle with a single unit of positive electrical charge |
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Definition
| subatomic particle with a single unit of negative electrical charge |
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| protons and neutrons packed together in a central core |
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| number of protons in a particular element |
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Definition
| an element that has the same number of protons but different number of neutrons |
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| isotope where the nucleus decays (breaks down) over time giving off radiation in the form of matter and energy |
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Definition
| occurs when an atom tranfers an electron to another atom |
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Definition
| atom that have become electrially charged as a result of gaining or losing electrons |
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| bond when two atoms share electrons |
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| two or more atoms held together by a covalent bond |
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| changes that result in the formation of one or more substances |
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Definition
| starting materials for a reaction |
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| ending material in a reaction |
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Definition
| anything that occupies space and has mass |
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Definition
| pure substance that can't be broken down by chemical means into other substances |
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| elements that make up less than .01% of your body mass, nevertheless critical to your health |
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Definition
| substance containing two or more elements that are chemically combined in a fixed ratio |
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Definition
| molecule in which opposite ends have opposite electric charges |
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Definition
| weak attraction between the hydrogen atom of one molecule and a slightly negative atom with another molecule |
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| tendency of molecules of the same kind to stick to one another |
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Definition
| attraction that occurs between unlike molecules |
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Definition
| total amount of energy associated with the random movement of atoms and molecules in a sample of matter |
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| measure of the average energy of a random motion of the particles in a substance |
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| a uniform mixure of two or more substances |
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| substance that dissolves the other and is in greater amount |
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Definition
| substance that is dissolved and is in lesser amount |
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Definition
| when water is the solvent the result is this |
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Definition
| compound that donates Hplus ions to a solution |
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Definition
| compound that removes Hplus ions from an Aqueous Solution |
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Definition
| describes how acidic or basic a solution is |
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| substance that causes solution to resist a change in pH |
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