Atomic Theory 3

Question 1

Electrons are

Answer 1

Matter

Question 2

All matter has

Answer 2

Mass

Question 3

Robert Andrews Millikan was an American _

Answer 3

Physicist

Question 4

Robert Andrews Millikan received Nobel prize in physics in 1923 for

Answer 4

Work in measurement of the elementary electric charge

Question 5

In 1909 R.A. Millikan performed an experiment and found

Answer 5

The size of the charge on an electron

Question 6

James Chadwick was a British

Answer 6

Physicist

Question 7

James discovered the

Answer 7

Neutron

Question 8

What year did James Chadwick discover the neutron

Answer 8

1932

Question 9

James Chadwick was awarded the Nobel prize in physics in

Answer 9

1935

Question 10

James Chadwick found the _ to be twice as large as previously thought

Answer 10

Mass of the nucleus

Question 11

Chadwick found that the Rutherford atom was neutral, yet

Answer 11

The protons had a positive charge

Question 12

James Chadwick named the subatomic particles

Answer 12

Neutrons

Question 13

Atoms are different when they have different numbers of (3)

Answer 13

Protons

Neutrons

Electrons