Fission, Fusion, and Radioactivity MCQ 1

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What is the charge of an alpha particle?

Positive (correct)

No charge

Negative

Variable

What is the process of a nucleus breaking up with the release of radiation?

Nuclear fusion

Nuclear fission

Radioactive decay (correct)

Ionisation

What is the unit of activity of a radioactive source?

Curie

Becquerel (correct)

Seivert

Rutherford

What is the equation that relates energy and mass?

E=mc^2 Signup and view all the answers

What is the process by which a neutral atom gains or loses electrons?

Ionisation Signup and view all the answers

What is the half-life of a radioactive isotope?

The time taken for half of the nuclei in a sample to decay Signup and view all the answers

What is the type of radiation that is the emission of high-energy photons from an unstable nucleus?

Gamma radiation Signup and view all the answers

What is the process by which two small nuclei combine to form a single larger nucleus?

Nuclear fusion Signup and view all the answers

What is the main conclusion drawn from Rutherford's gold foil experiment?

Atoms are made up of mostly empty space with a dense positive core Signup and view all the answers

What is the composition of the nucleus according to Niels Bohr's model?

Tiny solid protons and neutrons Signup and view all the answers

What happens when electrons fall back to a lower energy state after being given energy?

They emit a fixed 'quantum' of energy Signup and view all the answers

Fission, Fusion, and Radioactivity MCQ 1

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Questions and Answers

What is the charge of an alpha particle?

What is the process of a nucleus breaking up with the release of radiation?

What is the unit of activity of a radioactive source?

What is the equation that relates energy and mass?

What is the process by which a neutral atom gains or loses electrons?

What is the half-life of a radioactive isotope?

What is the type of radiation that is the emission of high-energy photons from an unstable nucleus?

What is the process by which two small nuclei combine to form a single larger nucleus?

What is the main conclusion drawn from Rutherford's gold foil experiment?

What is the composition of the nucleus according to Niels Bohr's model?

What happens when electrons fall back to a lower energy state after being given energy?

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