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Development of Atomic Theory

Last updated over 5 years ago

10 questions

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Question 1

1.

Describe Democritus's model of the atom

A the plum-pudding model

B a small solid sphere

C the planetary model

D the nuclear model

Question 2

2.

Click all that apply to Dalton's atomic theory

 atoms are indivisible

 all atoms of the same element are alike

 Compounds form when atoms of different elements combine in whole number ratios

 atoms contain subatomic particles

all matter is made up of atoms

Question 3

3.

The Greek philosopher Democritus was one of the first to suggest the existence of atoms.

True

False

Question 4

4.

The word "atomos" is greek for _____________

invisible

indivisible

atoms

divisible

Question 5

5.

What did J.J. Thomson discover?

A nucleus

B proton

C electron

D neutron

Question 6

6.

Check all that apply to J.J. Thomas's atomic theory

A discovered the electron

B discovered the neutron

C the plum-pudding model

D each atom was a square that was filled with positively charged fluid

electrons were represnted as "plums" while the "pudding" was positively charged

studied the behavior of cathode rays when exposed to a magnetic field

Question 7

7.

Which Scientist used the "Gold-Foil Experiment"

A Democritus

B Rutherford

C Aristotle

D Thomas

Question 8

8.

Who discovered the nucleus?

A Rutherford

B Thomas

C Democritus

D Dalton

Question 9

9.

In Rutherfords model, what is the charge of the nucleus?

no charge

positive

negative

Question 10

10.

Check all that Rutherford and his team concluded.

atoms contain electrons

there is a small core to the atom 

the positive charge of an atom is found in the nucleus

atoms contain neutrons

Most of the atom is empty space, where the low mass electrons are found.