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Created by:
natmason333 on September 19, 2012
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24 terms
Terms | Definitions |
|---|---|
 element | a substance that ordinarilary cannot be broken down chemically to form simpler kinds of matter |
| atom | the simplest particle of an element that retains all the properties of that element |
| compund | a pure substance that is formed by the combination of atoms |
| molecule | a chemical structure composed of one or more atoms |
| how are particles arranged in the atom? | protons neutrons electrons |
| elements are stable? | number and arrangement of electrons |
| ionic bond | attracts each other |
| covalent bond | when two atoms share one or more pair of electrons |
| neon | noble gas |
| solution | a mixture uniformly distributed |
| dissociation | breaking apart opposite charges |
| What pH value is neutral? | 7 |
| acids | release H+ ions |
| bases | release H- ions |
| buffer | neutralize small amounts acid or a base added to a solution |
| matter | anything taking up space |
| biological applications | tracers dating objects treating cancer |
| octec rule | valence shells are complete when it contains 8 electrons |
| Anion | gaining of electrons - |
| cation | loss of electrons + |
| conservation of mass | mass cannot be created or destroyed |
| solution | liquid composed of small solutes and solvents (salt water) |
| suspension | a mixture that seperateson standing (sand in water) |
| calloidal dispersions | large particles that do not set out over time (milk) |
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