8-1

Question 1

what did Democartus call atoms

Answer 1

autonomous or “uncuttable”

Question 2

4 things Daltons theory explains

Answer 2

1. atoms cannot be divided
2. all atoms are the same within the same element
3. atoms cannot be changed into an atom of another element
4. Compounds are formed when atoms of 2+ elements are combined

Question 3

What did Thompson Expeirment show

Answer 3

that there were smaller particles in the atom

Question 4

What particles did Thompson find

Answer 4

electrons

Question 5

What did ruthefords Expeirment show?

Answer 5

that the particles would bounce off the nucleaus

Question 6

What did Rutherford’s Expeirment find

Answer 6

a place for protons —- the nucleaus

Question 7

What did Bohr Predict

Answer 7

electron moved around the nucleaus/protons in a orbit

Question 8

Electron Cloud

Answer 8

to show that electrons move rapidly around the nucleaus

Question 9

what was new about the modern model

Answer 9

included neutrons

Question 10

What did the nucleaus look like in the modern model

Answer 10

a small nuclear, and a large space for electrons

Question 11

The atomic number shows the

Answer 11

the number of protons, and usually the electons

Question 12

Mass number shows the

Answer 12

electrons the protons

Question 13

atomic mass shows

Answer 13

protons + neutrons