Atomic Theory

Question 1

What are the names of all the scientists in this lesson

Answer 1

Democritus, John Dalton, J.J. Thomson, Ernest Rutherford, Niels Bohr, Erwin Schrodinger, and Warner Heisenberg.

Question 2

What year was Dalton’s discovery

Answer 2

1803

Question 3

What year was Thomson’s Discovery

Answer 3

1897

Question 4

What year was Rutherford’s Discovery

Answer 4

1909

Question 5

What year was Bohr’s discovery

Answer 5

1913

Question 6

What year was Heisenberg and Schrodinger’s discovery made

Answer 6

1926

Question 7

What term did Democritus coin and what does it mean

Answer 7

He coined the term Atomos and it means can’t be divided.

Question 8

What year did Democritus discover his theory

Answer 8

440 BCE

Question 9

What was Thomson’s model called( both options )

Answer 9

The plum pudding model or the chocolate chips ice cream model

Question 10

What did Thomson’s theory state

Answer 10

That there were negatively charged particles in atoms called electrons

Question 11

What did Democritus not do that every other person did

Answer 11

He didn’t perform experiments

Question 12

Who discovered that atoms can be negatively charged

Answer 12

J.J. Thomson

Question 13

What do Daltons model look like

Answer 13

A bowling ball or a Billiard Ball

Question 14

What was the Name of Rutherford’s experiment

Answer 14

The gold foil experiment

Question 15

What did Rutherford’s theory state

Answer 15

That atom have a positively charged nucleus and negatively charged electrons orbiting around the nucleus

Question 16

The levels on Rutherford’s model looked like what

Answer 16

Rungs on a ladder

Question 17

What did Bohr’s theory state

Answer 17

That electrons move in certain paths or energy levels around the nucleus

Question 18

Schrodinger and Heisenberg’s theory stated what

Answer 18

That electrons do NOT travel in certain paths

Question 19

What is an electron cloud

Answer 19

A region where electrons are likely to be found

Question 20

What was the model with the electron cloud called

Answer 20

The cloud model

Question 21

What year did James Chadwick receive the Nobel Peace Prize

Answer 21

1935

Question 22

What did James Chadwick discover and is that discovery positively or negatively charged

Answer 22

He discovered the neutron and a neutron is neutral( not positive or negatively charged. )

Question 23

What three things were stated in Dalton’s theory

Answer 23

1. Atoms cannot be divided or destroyed.
2. Atoms join to create different substances
3. All atoms of the same substances are identical