AQA GCSE PHYSICS - ATOMIC STRUCTURE

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What is nuclear fusion?

Back

A process where two light atomic nuclei combine to form a heavier nucleus, releasing energy, typically occurring in stars.

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Where does nuclear fusion occur?

Back

Stars.

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What is the only naturally occurring radioactive isotope of carbon?

Back

Carbon-14.

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What is transmutation?

Back

When one element turns into another.

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Who discovered the electron?

Back

J.J. Thompson.

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What is an isotope?

Back

Atoms of the same element that have different numbers of neutrons.

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What is radioactive decay?

Back

The process by which an unstable atomic nucleus loses energy by emitting radiation.

Front

What is the atomic number?

Back

The number of protons in the nucleus of an atom, which determines the element.

Front

What is the mass number?

Back

The total number of protons and neutrons in an atomic nucleus.

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What is a neutron?

Back

A subatomic particle found in the nucleus of an atom, with no electric charge.