Nuclear Physics, Flashcards

1
Q

What is a Nuclide

A

Nucleus of an isotope

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2
Q

What does the top left number of an element represent

A

The Atomic mass

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3
Q

What type of particle determines the element

A

The number of protons

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4
Q

What is Coulomb Force

A

The force which push’s protons and neutrons away from each other if charges not equal

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5
Q

Define an isotope

A

An element with a different number of neutrons to the original element atom

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6
Q

How do you know if an atom is radioactive

A

If the number of proton or neutron changes overtime, or it has excess energy

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7
Q

What is the strong force

A

The force which pulls proton and neutrons together

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8
Q

What does the atomic number determine

A

The charge of the nucleus

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9
Q

What is transmutation

A

Making a new element by changing number of protons

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10
Q

T or F: the Atomic number determines the number of protons

A

False, it determines the charge of an element

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11
Q

What is emitted in Alpha Decay

A

An alpha particle

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12
Q

What is another term for an alpha particle

A

A Helium particle

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13
Q

What is emitted in Beta Decay

A

Electron or positron

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14
Q

What is emitted in Gamma decay

A

Energy

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15
Q

Which type of nuclear decay is the heavist

A

Alpha

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16
Q

What is the mass of gamma radiation

A

No Mass

17
Q

Which type of nuclear decay has a negative charge

A

Beta decay

18
Q

Which type of nuclear decay is the slowest

A

Alpha decay

19
Q

What is the speed of gamma decay

A

Light speed

20
Q

Which type of nuclear decay has the most ionising power

A

Alpha DECAY

21
Q

Which type of nuclear decay has medium penetration ability

A

Beta Decay

22
Q

Where is the electron/positron emitted from during Beta decay

A

The nucleus

23
Q

What happens during positive beta decay

A

A proton transforms into a neutron, releasing a positron

24
Q

What happens during negative beta decay

A

A neutron transforms into a proton, releasing an electron

25
Q

T or F: An electron is emitted from its valence shell during beta decay

A

False, released from the nucleus

26
Q

Why does Alpha decay happen

A

Because the nucleus is too large to be stable

27
Q

What type of nuclear decay generally happens after another nuclear decay

A

Gamma decay

28
Q

What does 1 eV do

A

Moves 1 electron through 1 volt

29
Q

What is artificial transmutation

A

Artificially adding an alpha particle into a nucleus to break it into 2 smaller nucleus and protons

30
Q

What does this equation represent: Uranium-238 ➡ He + Thorium-234

A

Alpha decay

31
Q

What does this equation represent: He + N ➡ O + H

A

Artificial Transmutation

32
Q

What is another term for Artificial Transmutation

A

Fusion

33
Q

What is Einstein’s equation of energy-mass equivilance

A

E = M*C^2

34
Q

What is the equation for mass deficiency

A

△m = mass nucleus - (mass protons + neutrons)

35
Q

What is the equation for change in mass with a negative beta decay

A

△m = mass parent - mass daughter

36
Q

What is the equation for change in mass with a positive beta decay

A

△m = mass parent - (mass daughter + 2 electrons)