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What is the process by which an unstable atomic nucleus loses energy by radiation?
✔✔ Radioactive decay
What type of radiation consists of two protons and two neutrons?
✔✔ Alpha radiation
What is the most penetrating form of radiation?
✔✔ Gamma radiation
What particle is emitted during beta decay?
✔✔ An electron or a positron
What is the half-life of a radioactive substance?
✔✔ The time required for half of a radioactive sample to decay
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, What element is commonly used as fuel in nuclear reactors?
✔✔ Uranium-235
What process powers the sun by combining small nuclei into larger ones?
✔✔ Nuclear fusion
What type of nuclear reaction splits a heavy nucleus into two smaller nuclei?
✔✔ Nuclear fission
What isotope of hydrogen is used in nuclear fusion reactions?
✔✔ Deuterium or tritium
What is a chain reaction in nuclear chemistry?
✔✔ A self-sustaining series of fission reactions
What force holds protons and neutrons together in the nucleus?
✔✔ The strong nuclear force
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