Nuclear Chemistry Review

The type of radioactive particle that can be most easily stopped is the ____.

• Alpha Particle
• Beta Particle
• Gamma Ray
• Uranium

 The three types of nuclear radiation in increasing order of penetrating power are ____.

• gamma, beta, alpha
• alpha, gamma, beta
• alpha, beta, gamma
• beta, gamma, alpha

Tags

NGSS.HS-PS1-8

Negatively charged particles emitted from a nucleus at a high speed are ____.

• alpha particles
• beta particles
• gamma rays
• uranium

Tags

NGSS.HS-PS1-8

Which radiation has no electric charge associated with it?

• alpha
• beta
• gamma
• alpha and beta

An alpha particle consists of 

• two protons, two neutrons, and two electrons.
• two neutrons and two electrons.
• two protons and two neutrons.
• two protons and two electrons.

Tags

NGSS.HS-PS1-8

When the ____ is not large enough to hold a nucleus together tightly, the nucleus can become radioactive.

• electric force
• strong force
• tracer
• isotope

Which type of radioactive decay occurs when the atomic number increases by one?

• beta decay
• alpha decay
• positron decay
• gamma decay

Tags

NGSS.HS-PS1-8

When a nucleus emits a beta particle, its atomic number 

• changes, and so does its mass number.
• changes, but its mass number remains constant.
• remains constant, and so does its mass number.
• remains constant, but its mass number changes.

Tags

NGSS.HS-PS1-8

Thorium-234 has a half-life of 24 days. If you started with a 100-g sample of thorium-234, how much would remain after 48 days?

• 100 g
• 50 g
• 25 g
• 10 g

Tags

NGSS.HS-PS1-8

The stability of an isotope nucleus depends on the ____.

• atomic mass
• atomic number
• number of neutrons
• neutron-to-proton ratio