Nuclear Chemistry, Energy and Weapons

The time taken for half of an amount of radioactive atoms to decay.

• Nuclear fusion
• Full-life
• Dead time
• Half-life

Tags

NGSS.HS-PS1-8

Arrange in order of increasing ability to penetrate matter.

• Beta, gamma, alpha
• Alpha, gamma, beta
• Gamma, beta, alpha
• Alpha, beta, gamma

Tags

NGSS.HS-PS1-8

A nuclear fission reaction occurs when a uranium-235  atom is bombarded with a neutron. This reaction is used to produce energy in a nuclear power plant. Why is it not possible to carry out a nuclear fusion reaction in a nuclear reactor?

• A fusion reaction releases harmful rays
• A fusion reaction is difficult to control
• A fusion reaction requires extremely low temperature and pressure
• A fusion reaction requires extremely high temperature and pressure

Tags

NGSS.HS-PS1-8

What do these symbols represent?

• alpha particle
• beta particle
• neutron
• gamma ray

Tags

NGSS.HS-PS1-8

How many neutrons are in this isotope of Uranium?

• 235
• 92
• 327
• 143

Tags

NGSS.HS-PS1-8

What sort of shield will block gamma rays?

• skin
• paper
• wood

• thick lead

The type of radioactive particle that can be stopped by a sheet of paper is the ____.

• alpha particle
• beta particle
• gamma ray
• uranium

Where does fusion occur naturally?

• Underwater
• All around us
• In the radioactive waste
• On the sun

Tags

NGSS.HS-ESS1-1

This is an example of...

• Fission  reaction
• Fusion reaction
• Decomposition reaction
• Combustion

Tags

NGSS.HS-PS1-8

How do atoms with stable nuclei differ from atoms with unstable nuclei? Nuclei is the plural of nucleus.

• The number of particles in stable nuclei never changes; the number of particles in unstable nuclei does change 
• Stable nuclei contain equal numbers of protons and neutrons; unstable nuclei do not 
• Stable nuclei emit electrons; unstable nuclei emit protons and neutrons 
• Stable nuclei can be found everywhere; unstable nuclei do not occur in nature

Tags

NGSS.HS-PS1-8