CSEC Physics - 05 Radioactivity

What is radioactivity?

• the integration of atomic matter

• the spontaneous integration of matter

• the spontaneous disintegration ('decay') of unstable atomic nuclei

• the spontaneous disintegration ('decay') of unstable gasses

How is the alpha particle symbolized?

• ⁴₂⍺

• ²₄He

a nucleus with a High-frequency electromagnetic wave is called a(n) ____.  

• alpha particle

• electroscope

• beta particle

• gamma ray

A helium nucleus with two protons and two neutrons is called a(n) ____.  

• alpha particle

• electroscope

• beta particle

• gamma ray

How is the gamma wave symbolized?

• ⁴₂⍺

• ²₄He

The relative mass of a gamma ray is

Answer explanation

The relative mass of an alpha particle is

Answer explanation

The relative mass of a beta particle is

Answer explanation

What is the relative charge of an alpha particle

• 0

• -1

• +1

• +2

Answer explanation

What is the relative charge of a beta particle

• 0

• -1

• +1

• +2

Answer explanation