5 Written Questions

1. electrons moved in a wave function
2. proposed the 1st atomic theory; law of multiple porportions
3. In a compound of 2 of the same element, the mass of the second element combines with that of the 1st element, and it's ration consists of small whole numbers
4. mass is neither created nor destroyed during ordinary chemical reactions or physical changes
5. regardless of the size of the sample, a chemical compound will always contain the same elements of the same porportions

5 Multiple Choice Questions

1. found out that energy was connected to frequency based on the # planck's constant. Studied color lines
   1. Planck
   2. Proust
   3. Bohr
   4. Milikan
2. came up w/ the concept of the atom
   1. Milikan
   2. Democritus
   3. Bohr
   4. Dalton
3. found out that the total mass of reactants was = to the total mass of products; Law of Conservation
   1. Lavoisier
   2. Thomson
   3. Broglie
   4. Bohr
4. came up w/ bohr model; an electron heated at ground state jumps to excited state and releases a photon color
   1. Thomson
   2. Bohr
   3. Proust
   4. Broglie
5. No, he believed in the elements fire, water, earth, and air.
   1. Law of Definate Porportion
   2. Schrodinger (aka math guy)
   3. Democritus
   4. Did Aristotle agree with Democritus' concept?

5 True/False Questions

1. Proust → came up w/ bohr model; an electron heated at ground state jumps to excited state and releases a photon color

   True        False

2. Thomson → law of definate porportion (proust's law)

   True        False

3. Milikan → used an oil drop experiment that suspended electrons long enough for him to measure mass

   True        False

4. Schrodinger (aka math guy) → created data that better explains where electrons are located in the atom

   True        False

5. 5 postulates → 1.) all matter is composed of atoms
   2.) atoms of the same element are identicle
   3.)atoms can't be subdivided, created, nor destroyed
   4.) atoms of different elements combine to form compounds
   5.) during chemical reactions, atoms are combined, separated,or rearranged

   True        False