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Definition
| The study of the properties of matter |
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Definition
| Anything that has mass and takes up space |
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Definition
| A substance that cannot be broken down into any other substances by chemical or physical means |
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Definition
| A substance made of two or more elements |
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Definition
| Two or more pure substances -- elements, compounds, or both -- that are in the same place, but not chemically combined |
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Definition
| A well-mixed mixture. Sea Water is an example |
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Definition
| A change that alters the form or the appearance of a material, but does not convert the material into a new substance |
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Definition
| A change in matter that forms one or more new substances. |
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Definition
| A solid that forms from solution during a chemical reaction. |
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Definition
| The smallest particle of an element |
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Definition
| A particle made up of two or more atoms bonded together |
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Definition
| The force that holds atoms together. |
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Definition
| A shorter, easier way to show chemical reactions, using symbols instead of words. |
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Definition
| The materials that are present before a chemical reaction occurs. |
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Definition
| States that the amount of matter in a chemical reaction does not change. The total mass of the reactants must equal the total mass of the products. |
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Definition
| A one letter or two letter set of characters to identify an element. |
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Definition
| A combination of symbols that represent the elements in a compound. |
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Term
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Definition
| These show the number of atoms of an element in a molecule. |
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Definition
| The number placed in front of a chemical formula in the equation. |
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Definition
| The process that takes place when two or more substances combine to make a more complex substance. |
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Definition
| When compounds break down into simpler products. |
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Definition
| when one element replaces another element in a compound, or when two elements in different compounds trade places |
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Definition
| A reaction that releases energy in the form of heat. (think Exit=leave and exo=leave) |
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Definition
| A reaction that absorbs energy |
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Definition
| the substance formed after a chemical reaction takes place |
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Term
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Definition
| the substance formed after a chemical reaction takes place |
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Definition
| Something that increases the rate of a reaction by lowering the activation energy |
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Term
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Definition
| the minimum amount of energy needed to start a reaction |
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