Types of radiations

How is the alpha particle written in a nuclear equation?

• ^4₂He
• ^2₄He

Uranium-238  decays into  Thorium-234  by emitting .........

• an alpha particle
• a beta particle
• gamma rays
• visible light

Which type of nuclear radiation is being emitted here?

• Alpha
• beta
• gamma 
• none

What happens to an atom's mass when it undergoes alpha decay?

• increases by 2

• decreases by 2

• increases by 4

• decreases by 4

In beta decay, a(n) ___________ is emitted.

• gamma ray

• electron

• neutron

• helium particle

When an atom undergoes gamma ray radiation, its atomic number...

• increases by 1

• decreases by 1

• decreases by 2

• does not change

^A_ZX --> ^A_Z-1Y + ⁰₊₁e

• alpha decay

• beta positive decay

• beta negative decay

• electron capture

• gamma decay

Radioactive materials have unstable...

• electrons
• protons
• nuclei
• neutrons

A beta particle is a fast moving....

• atom

• electron

• proton

• neutron

When an unstable nucleus emits an alpha particle the nucleus looses....

• an electron

• 1 proton and 1 neutron

• 2 protons and 2 neutrons

• energy