Chemistry Final Revi
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| 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
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| theory | a tested hypothesis, gives an overall explanation of some part of nature
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| mega | 1,000,000= 10 to the 6
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| kilo | 1000= 10 to the 3
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| deci | 0.1= 10 the the -1
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| centi | 0.01= 10 to the -2
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| milli | 0.001= 10 to the -3
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| liter | 1000 mL
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| milliliter | 1/1000 L= 10 the the -3 = 1 L
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| 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
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| J.J. Thomson | atoms of any element can be made to emit tiny negative particles, there must also be postively charged particles
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| William Thomson (Lord Kelvin) | plum pudding model, pudding of positive charge w/ negative electrons scattered around
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| 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
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| James Chadwick | nuclei contain a neutral partical he named it neutron, which is slightly more massive than a proton but has no charge
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| covalent bond | a type of bonding in which atoms share electrons
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