Flashcards
phyisics revision
Flashcards do conjunto (4)
- 1atomic structureproton: relative mass 1 relative charge +1
neutron: relative mass 1 relative charge 0
electron: relative mass 0.0005 relative charge -1 - 2Half-lifeHalf-life is the time it takes for half of the unstable nuclei in a sample to decay or for the activity of the sample to halve
- 3AlphaAlpha radiation consists of alpha particles. An alpha particle is identical to the nucleus of a helium atom, which comprises two protons and two neutrons.
- 4betaBeta radiation consists of high energy electrons emitted from the nucleus. These electrons have not come from the electron shells or energy levels around the nucleus. Instead, they form when a neutron splits into a proton and an electron. The electron then shoots out of the nucleus at high speed
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- FlashCards sobre phyisics revision, criado por Gabriel Williams em 09-01-2019.
- Criado por
- Gabriel Williams · jan 2019
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- 9 jan 2019
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