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Chemistrychapter3pep
| Term | Definition |
|---|---|
| Law of Conservation of Mass | the mass is neither created nor destroyed during ordinary chemical reactions or physical changes |
| Law of Definite Proportions | chemical compounds contain the same elements in exactly the same proportions y mass regardless of the size of the sample source of the compound |
| Law of Multiple Proportions | 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 the small whole number |
| atom | the smallest particle of an element that retains the chemical property of that element |
| nuclear forces | short-range proton-neutron, proton-proton, and neutron-neutron forces that hold nuclear particles together |
| atomic number | number of protons of each atom in an element |
| isotope | atoms of the same element with different masses |
| mass number | total number of protons and neutrons in an isotope |
| nuclide | specific isotope of an atom |
| atomic mass unit | amu or 1/12 of a carbon atom |
| average atomic mass | weighted average of naturally occurring isotopes of an element |
| Avogadro's number | 6.02*10^23 |
| molar mass | mass of one mole of a pure substance |
Created by:
pepperjakob
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