Different nuclides of the same element have

the same number of protons but different numbers of neutrons

the same number of protons and the same number of neutrons.

the same number of neutrons but different numbers of protons

different numbers of protons and different numbers of neutrons.

Which of the following statements about atomic masses is true?

Atomic masses include masses of neutral atoms.

Atomic masses include masses of bare nuclei.

Atomic masses do not include masses of electrons.

Atomic masses do not include masses of neutrons.

The nucleus of an atom consists of what particle(s)?

protons, neutrons, and electrons

An atom emits an electron from the nucleus when

a proton is formed from a neutron.

a high-energy photon is emitted.

there is enough energy to cross the forbidden gap between energy bands.

the frequency of incident radiation exceeds the threshold frequency of the atom.

The strong nuclear force overcomes

the repulsive electromagnetic force between protons in a nucleus.

the repulsive electromagnetic force between two atomic nuclei.

the attractive electromagnetic force between a nucleus and the electrons that surround it.

the attractive electromagnetic force between a nucleus and the electrons surrounding another atom.

The energy released during nuclear fission is equal to the

energy equivalent of the mass lost in the reaction.

strong nuclear force between the two fission products.

repulsive electric force between the splitting protons.

binding energy in the fission products.

Plutonium-236 ( 236 94 Pu) has a half-life of 2.85 years due to alpha decay. This means that, after 8.55 years, 100 g of plutonium-236

will still be 100 g of plutonium-236

The mass number of an atom is found by

adding the number of protons and neutrons.

adding the number of protons and electrons.

subtracting the number of protons from the number of neutrons.

subtracting the number of protons from the number of electrons.

The loss of an alpha particle by a radioactive nuclide causes

the atomic number to decrease by 2.

the atomic number to decrease by 4.

the mass number to decrease by 2.

A nucleus becomes increasingly unstable when

there are more neutrons than protons

there are more protons than electrons

there are more protons than alpha particles

it decays alpha particles from the nucleus

Nuclear Physics

Authored by Charles Martinez

Physics

10th - 12th Grade

NGSS covered

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33 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

All matter is composed of quarks and leptons.

True

False

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Carbon-12 is used to date objects.

True

False

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

An atom of carbon-14 isotope has more protons than an atom of carbon-12 isotope.

True

False

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Nuclear fusion can release large amounts of energy.

True

False

Artificially produced radioactive isotopes are used in medicine and medical research.

True

False

Beta radiation requires _____ to be stopped.

paper

glass

aluminum

lead

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Radioactivity is a natural process.

True

False

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Nuclear Physics

All matter is composed of quarks and leptons.

Carbon-12 is used to date objects.

An atom of carbon-14 isotope has more protons than an atom of carbon-12 isotope.

Nuclear fusion can release large amounts of energy.

Artificially produced radioactive isotopes are used in medicine and medical research.

Beta radiation requires _____ to be stopped.

Radioactivity is a natural process.

The neutrons within the nucleus of an atom have what charge?

The atomic number of an atom is determined by its

Alpha radiation requires _____ to be stopped.

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