Term
| Law of Conservation of Mass |
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Definition
| which states that mass is neither created nor destroyed during ordinary chemical reactions or physical changes. |
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Term
| Law of Definite Proportions |
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Definition
| the fact that a chemical compound contains the same elements in exactly the same proportions by mass regardless of the size of the sample or source of the compound. |
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Term
| Law of Multiple Porportions |
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Definition
| if two or more different compounds are composed of the same two elements; then the ratio of the masses of the second element combined with a certain mass of the first element is always a ratio of small whole numbers. |
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Term
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Definition
| as the smallest particle of an element that retains the chemical properties of that element. |
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Term
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Definition
| these short-range proton-neutron. proton-proton, and neutron-neutron forces hold the nucleur particles together. |
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Term
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Definition
| of an element is the number of protons of each atom of that number. |
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Term
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Definition
| are atoms of the same element that have different masses. |
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Term
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Definition
| is the total number of protons and neutrons that make up the nucleus of an isotope. |
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Term
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Definition
| is a general term for a specific isotope of an element. |
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Term
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Definition
| (AMU)is exactly 1/12 the mass of a carbon-12 atom. |
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Term
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Definition
| is the weighted average of the atomic masses of the nauturally occuring isotopes of an element. |
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Term
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Definition
| is the amount of a substance that contains as many particles as there are atoms. |
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Term
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Definition
| is the number of particles in exactly one mole per substance. |
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Term
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Definition
| the mass of a pure substance. |
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