Atoms 3.0

Question 1

Who was James Chadwick and what did he discover?

Answer 1

James Chadwick, who worked with Rutherford and Thompson, proved that neutrons exist in 1932.

Question 2

Why was gold used for this experiment?

Answer 2

Gold was used as it is the most meriable type of matter, which means that it can become the thinnest sheet.

Question 3

What charges do alpha particles have?

Answer 3

Gold was used in the gold foil experiment as it is the type of metal which can be hammered into the thinnest sheet.

Question 4

What did Rutherford’s model have and not have?

Answer 4

There is:
* a nucleus
* electrons
* empty space/gap
There is not:
* shells
* neutrons in the nucleus
* orbiting electrons in the shells

Question 5

What is the name of the model we use today?

Answer 5

Bohrs model

Question 6

What does the Bohrs model have ?

Answer 6

There is:
*A nucleus
*Neutrons
*Empty space/gap
*shells with electrons orbiting

Question 7

What did Chadwick, Rutherford and Thompson win?

Answer 7

Chadwick, Rutherford, and Thompson won Nobel prizes for their work.

Question 8

What is an ion?

Answer 8

An ion is an atom that has either a positive or negative charge on it.