Atomic StructureAQA GCSE Physics (8463)

Atoms and Nuclear Radiation

Work through the notes, try the practice questions, then take the quiz. The report tells you exactly what to revise next. (2026)

Practice progress

6 MCQs

0 of 6 attempted

Correct

Incorrect

Remaining

1
Which radiation is a helium nucleus?
Answer & explanation
Correct: option A
α is a He-4 nucleus: 2p + 2n.
2
Beta particles are stopped by:
Answer & explanation
Correct: option B
Aluminium ~5 mm stops β.
3
Most ionising radiation:
Answer & explanation
Correct: option A
α has highest ionising power (and lowest penetration).
4
Best shield against gamma:
Answer & explanation
Correct: option C
Lead ~5 cm or thick concrete.
5
Beta is:
Answer & explanation
Correct: option B
β = high-speed electron from neutron-to-proton decay in the nucleus.
6
Neutron radiation is best absorbed by:
Answer & explanation
Correct: option C
Hydrogen nuclei slow neutrons effectively.

Atomic StructureAQA GCSE Physics (8463)

Work through the notes, try the practice questions, then take the quiz. The report tells you exactly what to revise next. (2026)

6 MCQs

0 of 6 attempted

Correct

Incorrect

Remaining

1
Which radiation is a helium nucleus?
Answer & explanation
Correct: option A
α is a He-4 nucleus: 2p + 2n.
2
Beta particles are stopped by:
Answer & explanation
Correct: option B
Aluminium ~5 mm stops β.
3
Most ionising radiation:
Answer & explanation
Correct: option A
α has highest ionising power (and lowest penetration).
4
Best shield against gamma:
Answer & explanation
Correct: option C
Lead ~5 cm or thick concrete.
5
Beta is:
Answer & explanation
Correct: option B
β = high-speed electron from neutron-to-proton decay in the nucleus.
6
Neutron radiation is best absorbed by:
Answer & explanation
Correct: option C
Hydrogen nuclei slow neutrons effectively.