Nuclear Chemistry

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What is Nuclear Chemistry?

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Nuclear Chemistry is the study of the chemical and physical properties of elements as influenced by changes in the structure of the nucleus. It includes the study of radioactivity, nuclear processes, and properties of radioactive isotopes.

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What is a half-life?

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The half-life of a radioactive substance is the time required for half of the radioactive atoms in a sample to decay.

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How do you calculate the remaining mass of a radioactive substance after a certain time?

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Use the formula: Remaining Mass = Initial Mass * (1/2)^(Time Elapsed / Half-life).

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What does the term 'decay' refer to in nuclear chemistry?

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Decay refers to the process by which an unstable atomic nucleus loses energy by emitting radiation.

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What is the significance of the mass number in isotopes?

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The mass number represents the total number of protons and neutrons in the nucleus of an atom, which determines the isotope of an element.

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What happens to an unstable nucleus?

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An unstable nucleus emits energy when it decays, often transforming into a more stable nucleus.

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What is fission?

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Fission is the process of splitting a heavy nucleus into two lighter nuclei, accompanied by the release of energy.

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What is fusion?

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Fusion is the process of combining two light atomic nuclei to form a heavier nucleus, releasing energy in the process.

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How is the original mass of a radioactive sample calculated?

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The original mass can be calculated using the formula: Original Mass = Remaining Mass * (2^(Time Elapsed / Half-life)).

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What is the relationship between half-life and stability of a nucleus?

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Generally, a longer half-life indicates a more stable nucleus, while a shorter half-life indicates a less stable nucleus.