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Chemistry Final Revi
| Question | Answer |
|---|---|
| natural law | studies of innumerable chemical changes have shown that the total mass of the materials involved is the same before and after that change |
| theory | a tested hypothesis, gives an overall explanation of some part of nature |
| mega | 1,000,000= 10 to the 6 |
| kilo | 1000= 10 to the 3 |
| deci | 0.1= 10 the the -1 |
| centi | 0.01= 10 to the -2 |
| milli | 0.001= 10 to the -3 |
| liter | 1000 mL |
| milliliter | 1/1000 L= 10 the the -3 = 1 L |
| dalton's atomic theory | elements are made of tiny particles called atoms, all atoms of a given element are identical (later disproven) atoms of a given element are different from any other atoms of another element atoms can combine w/ atoms atoms are indivisible in chemical pro |
| J.J. Thomson | atoms of any element can be made to emit tiny negative particles, there must also be postively charged particles |
| William Thomson (Lord Kelvin) | plum pudding model, pudding of positive charge w/ negative electrons scattered around |
| Ernest Rutherford | alpha particles, metal foil experiment some a particles were deflected, plum pudding model had to be incorrect. center of concentrated positive charge, named them protons |
| James Chadwick | nuclei contain a neutral partical he named it neutron, which is slightly more massive than a proton but has no charge |
| covalent bond | a type of bonding in which atoms share electrons |
Created by:
popis8
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