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midterm
words most missed
| Term | Definition |
|---|---|
| Ion | atom which has gained or lost electrons, a charged particle |
| Isotope | Atoms which have the same atomic number BUT different atomic masses |
| empirical formula | lowest whole number ration of a formula. All ionic compounds are written empirically |
| allotrope | one,two or more different forms of an element in the same element in the same phase. ex graphite and diamond, O2 and Ozone O3 |
| electrolyte | a substance whose water solution will conduct electricity (ions) |
| entropy | a measurement of the disorder or randomness of a system |
| LEO | Lose electrons...Oxidation |
| GER | Gain electrons...reduction |
| endothermic | a chemical reaction that absorbs heat (heat in) |
| exothermic | a chemical reaction that releases energy ( heat out) |
| excited state | electrons in an atom occupy higher energy level even though lower levels are unoccupied |
| ground state | electrons occupy the lowest available energy levels of an atom |
| Molarity M | the concentration of a substance in moles per liter of solution |
| solution | a homogeneous mixture of substances in the same physical state |
| solute | the substance being dissolved |
| solvent | the substance that dissolves the solute |
| saturated | a solution containing the maximum amount of solute that will dissolve at a given temperature. |
| unsaturated | a solution in which more solute can be dissolved at a given temperature |
| supersaturated | a solution that contains more solute than would dissolve in a saturated solution at a given temperature |
Created by:
annpaige
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