Topic 2 - 2.2 - The Nucleus

Question 1

Where are the PROTONS, NEUTRONS and ELECTRONS located in the atom?

Answer 1

Protons - Inside the Nucleus
Electrons - Outside nucleus in shells
Neutrons - Inside the Nucleus

Question 2

What is the relative mass of Protons and Neutrons?

Answer 2

1.

Question 3

What is the formula for finding out the Mass number of an element?

Answer 3

Mass number = protons + neutrons

Question 4

Formula for finding out the amount of Neutrons in an element?

Answer 4

neutrons = mass number - atomic number

Question 5

Why do atoms have no charge?

Answer 5

They have no charge because they contain equal numbers of positive protons and negative electrons.

Question 6

What is the charge of a:
* PROTON?
* NEUTRON?
* ELECTRON?

Answer 6

Proton: +1
Neutron: 0
Electron: - 1

(REMEMBER TO ADD THE ‘+’ AND ‘-‘ SIGN)

Question 7

What is the MASS of a:
- PROTON?
- NEUTRON?
- ELECTRON?

Answer 7

Proton: 1
Neutron: 1
Electron: 0

(DO NOT ADD THE PLUS SIGN FOR THE MASS)