# Atoms, isotopes and ions - AQA test questions - AQA

### 1

What is the relative mass of the proton?

### 2

What is the relative charge of a neutron?

### 3

Uranium-235 has 92 protons. How many neutrons does it have?

### 4

What is an isotope?

### 5

Nitrogen-14 has 7 protons. How many neutrons does it have?

### 6

The mass number of an element is …

### 7

The atomic number of an element is …

### 8

What has an ionised atom lost or gained?

### 9

What has changed in the structure of the Cu2+ ion?

### 10

Why is deuterium $$_{1}^{2}\textrm{H}$$ sometimes called heavy hydrogen?