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18 Cards in this Set
- Front
- Back
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What is a nucleon? |
A proton or neutron in a nucleus |
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What do u call the number of protons? |
Atomic number or proton number |
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What is an isotope? |
Atoms with the same number of protons but different number of neutrons |
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What do u call the total number of protons and neutrons? |
Nucleon number or mass number |
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How do u work out the specific charge? |
The particles charge ÷ it's mass |
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What is strong force? |
The force which overcomes electrostatic force of repulsion between protons in the nucleus, keeps the neutron and protons together |
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What is alpha radiation? |
2 protons and 2 neutrons fired from a nucleud |
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What is beta radiation? |
Fast moving electrons |
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What is gamma radiation? |
Electromagnetic radiation emmited by an unstable nucleus |
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How do u work out wavelength? |
h = c ÷ f C is speed of light F is frquency |
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How do u work out photon energy? |
E = h x f h is plancks contant F is frequency |
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What happens when a particle and it's corresponding antiparticle collide? |
They annihilate each other and produce two photons |
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What is pair production? |
When a photon with enough energy passes a nucleus or electron can change into the corresponding anti/particle and disappear. |
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What is momentum |
Mass x velocity |
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What is a virtual photon? |
A photon that cannot be detected without negating the force |
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What is weak nuclear force? |
It causes neutrons to change into protons and vice versa in unstable nucleuses |
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What is electron capture? |
A proton rich nucleus turns into a neutron as a result of weak interaction with an inner shell electron |
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What is the order of electromagnetic waves? |
R M I V U X G |
