Matter and radiation

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Which particle has the largest specific charge?
The electron.
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What is an isotope?
A variation of an element with the same number of protons to the original but a different number of neutrons.
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What do you work out specific charge?
Charge / Mass
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Name the four fundamental forces.
The strong force, the weak force, gravity and the electromagnetic force.
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What is the strong force?
The force between nucleons which holds them in the nucleus.
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What is the range of the strong force?
Between 0.5 and 3 femtometres. 1 femtometre is the optimum distance.
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What is annihilation?
The conversion of a particle and an antimatter particle into electromagnetic radiation.
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What is the order of the EM spectrum from largest wavelength to the smallest.
Radiowaves, microwaves, infra-red, visible light, ultra-violet, x-ray and finally gamma.
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How do you calculate the energy of a photon?
Planck's constant (h) * frequency (f) = Planck's constant (h) * speed of light (c) / wavelength (lander)
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What is matter?
Matter is trapped energy
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What is an electron volt (eV)?
A unit of energy equal to the energy gained when an electron is accelerated by a potential difference of 1V.
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How do you convert to electron volts?
Divide by the charge of an electron (1.6*10^-19)
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Other cards in this set

Card 2

Front

What is an isotope?

Back

A variation of an element with the same number of protons to the original but a different number of neutrons.

Card 3

Front

What do you work out specific charge?

Back

Preview of the front of card 3

Card 4

Front

Name the four fundamental forces.

Back

Preview of the front of card 4

Card 5

Front

What is the strong force?

Back

Preview of the front of card 5
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