Keyword Analysis & Research: radioactive decay definition gcse


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What is radioactive decay in simple words?

radioactive decay. The spontaneous transformation of an unstable atomic nucleus into a lighter one, in which radiation is released in the form of alpha particles, beta particles, gamma rays, and other particles. The rate of decay of radioactive substances such as carbon 14 or uranium is measured in terms of their half-life.

What is the difference between radioactive decay and nuclear stability?

A nucleus will regain stability by emitting alpha or beta particles and then ‘cool down’ by emitting gamma radiation. Radioactive decay is a random process. A block of radioactive material will contain many trillions of nuclei and not all nuclei are likely to decay at the same time so it is impossible to tell when a particular nucleus will decay.

What is radioactivity GCSE science?

- GCSE SCIENCE. gcsescience.com 1 gcsescience.com What is Radioactivity? Sometimes the nucleus of an atom is unstable. A change will occur in the nucleus to make it more stable. The change is called a decay . When a nucleus decays it will emit (give out) some particles or waves . Emitting particles or waves from the nucleus is called radioactivity.

What do you mean by radioactivity?

Emitting particles or waves from the nucleus is called radioactivity. Radioactive decay is a random process which gives out heat. radiation . The same word radiation is also used for some


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