PHS: Edexcel sP6 Radioactivity Review

Which subatomic particles would you find in the nucleus of an atom?

• protons and neutrons
• protons and electrons
• neutrons only
• protons only

What did Ernest Rutherford's team use to show that most of an atom was empty space?

• alpha particles
• beta particles
• gamma particles
• x-rays

Approximately, how big is the radius of an atom?

• 1 x 10^-10 m

• 1 x 10^-5 m

• 1 x 10^-100m

• 1 x 10^-50 m

What is the relative mass of a proton?

• 1
• 0
• 1/1835
• 2

What is the relative mass of a neutron?

• 1
• 0
• 1/1835
• 2

Two atoms with the same number of protons, but different number of neutrons are known as?

• isotopes
• ions
• elements
• isomers

Carbon-14 is different to carbon-12 because...

• C-14 has two more neutrons than C-12
• There is no difference
• C-14 has 1 extra proton and 1 extra neutron than C-12
• C-14 has two more protons than C-12

If an atom absorbs energy, it can cause it's electrons to move to a "lower" orbit.

• false
• true

What do we call the colours of light emitted from atoms when their electrons fall back to their original orbits?

• emission spectrum
• absorbtion spectrum
• electromagnetic radiation
• frequency radiation

What do we call an atom that has lost or gained an electron?

• Ion
• Isotope
• Isomer
• Atom