Unit 25: Nuclear Chemistry

The nuclei of some atoms are unstable and undergo...

• Nuclear reactions

• Chemical Reactions

• Both chemical and physical reactions

• Both physical and nuclear reactions

Nuclear reactions occur when...

• Nuclei emit energy

• Nuclei emit light

• Nuclei emit all energy, light and particles/rays

• Nuclei emits particles and/ or rays

What did the discovery of the x-ray lead to the discovery of?

• Radioactive wavelengths

• Radioactive light

• Radio activity

• Cancer

What percent of isotopes do not decay spontaneously?

• 17.5%

• 16%

• 16.5%

• 17%

What keeps protons packed densely in the nucleus?

• The balance of neutrons with the charges of the protons

• The outer electron cloud that stabilizes the nucleus as a whole

• Gravity that pulls on the magnetic force

• A strong nuclear force

Positron emission is a radioactive decay process that involves the

• reduction of positrons

• increase in positrons

• decay in energy due to the lack of positrons

• emission of positrons

Energy and Mass can be converted into each other in Nuclear Chemistry.

• True

• False

Binding energy per nucleon reach a max of what Mass?

• 60

• 70

• 75

• 55

What are breeder reactors?

• Reactors that use less fuel than they initially use

• Reactors that use more fuel than they initially use

• Reactors that bred together to make a new kind of fuel used to emit nuclear fusion

• Reactors that react together through fission

Define transmutation

• When one element of one atoms goes to another elements of another atom

• When energy and light react to transmit light and energy

• The chemical reaction between a positron and an atom

• None of the above