3.1.1 Atomic structure

Question 1

What is the relative mass and relative charge of a proton ?

Answer 1

Relative mass= 1
Relative charge= +1

Question 2

What is the relative mass and relative charge of a neutron ?

Answer 2

Relative mass= 1
Relative charge= 0

Question 3

What is the relative mass and relative charge of a neutron ?

Answer 3

Relative mass= 1/2000
Relative charge= -1

Question 4

What is an isotope ?

Answer 4

Isotopes of an element are atoms with the same number of protons but different number of neutrons.

Question 5

What is the mass number ?

Answer 5

This is the total number of protons and neutrons in the nucleus of an atom

Question 6

What is the atomic number ?

Answer 6

This is the number of protons in the nucleus of an atom, it identifies the element

Question 7

What is the relative atomic mass ?

Answer 7

The average mass of an atom compared to C-12 on a scale in which an atom of C-12 has a mass of 12