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lab chemistry
Question | Answer |
---|---|
The Bohr Atom | an e- orbits nucleus. the closest it is to it, it is at it's ground state. an e- absorbs E and jumps farthar from nucleus(excited state). the e- goes back to ground state emitting wavelength of light. |
Rutherford... | Did "Gold Foil Exper." Results-%98 went straight thru %2 deflected Suggest atom is mostly empty space, nucleus is dense filled w. pos particles. |
J.J Thompson | Determines mass to be 1/1,000 of a Hydrogen atom. |
Aristotle said... | Matter is composed of FOUR elements.... WATER, AIR, EARTH, FIRE. |
Democritis said... | Matter is composed of very small particles called atoms. |
Law of Conservation is... | matter is neither created nor destroyed. |
Law of definite proportions is... | every like chemical compound has the same ratio of elements. |