Term
| Law of conservation of mass |
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Definition
| states that mass in 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
| 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 proportions |
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Definition
| states that if two or more different compound is composed of the same two elements, 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
| is the smallest particle of an element that retains the chemical properties of that element |
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Term
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Definition
| Short-range proton-neutron, proton-proton, and neutron-neutron forces that hold the nuclear particles together |
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Term
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Definition
| is the number of protons of each atom of that element |
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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
| 1 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 naturally occurring isotope 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 in exactly 12 g of carbon-12 |
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Term
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Definition
| is the number of particles in exactly one mole of a pure substance |
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Term
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Definition
| the mass of one mole of a pure substance |
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