Flashcards
Radioactive Nuclei
Cards in this deck (6)
- 1What makes a substance radioactive?When nuclei are unstable
- 2What are isotopes?Atoms of the same element with an equal number of protons and electrons, but with a different number of neutrons
- 3How do radioactive nuclei become stable?Through radioactive decay
- 4What is background radiation?Radiation in the atmosphere around us all the time
- 5Give 3 examples of sources of background radiation- Cosmic rays from space
- Rocks underground
- Manmade sources, eg. x-ray machines - 6When will an unstable nucleus decay?It is impossible to predict
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- AS level Physics (GCSE) Flashcards on Radioactive Nuclei, created by Sarah Collinson on 01/05/2016.
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- Sarah Collinson
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