Term
| law of conservation of matter |
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Definition
| matter is neither created nor destroyed in any chemical reaction or physical change |
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Term
| balanced chemical equation |
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Definition
| a symbolic expression summarizing a chemical reaction such as 2 H2(g) + O2(g) -> 2 H2O(g) |
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Term
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Definition
| the numbers in a chemical equation that indicate the relative numbers of units of each reactant or product involved in the reaction |
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Term
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Definition
| a group of atoms or ions represented by a compound's chemical formula; simplest unit of an ionic compound |
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Term
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Definition
| the mass (usually in grams) of one mole of a substance |
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Term
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Definition
| the percent by mass of each component in a material; or, specifically, the percent by mass of each element within a compound |
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Term
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Definition
| a resource that can be replenished by natural processes over the time frame of human experience |
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Term
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Definition
| a resource in limited supply that cannot be replenished by natural processes over the time frame of human experience |
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