Nuclear Chemistry Review

What is the nucleus made of?

• Radioactivity
• Electrons
• Protons and Neutrons
• Isotope of Helium

Half-life

• Process of changing one element to another
• Amount of time it takes for half of the nuclides to decay
• Half of your life is over
• 1/2 of the substance

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What is a beta particle?

• A positively charged particle 
• An electron
• A neutron 
• A particle that is both positively and negatively charged 

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What is an alpha particle made of? 

• 2 electrons and 2 protons 
• Only electrons 
• Particles with a -1 charge 
• 2 protons and 2 neutrons 

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If you start with 100 grams of iodine-131 and the half life is 2 days, how many grams is left after 6 days?

• 25 grams
• 12.5 grams
• 50 grams
• 200 grams

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The sun uses which type of energy

• Nuclear fission
• Nuclear fusion
• Fossil fuels
• Both fission and fusion

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NGSS.HS-PS1-8

Radioactive materials have unstable

• Nuclei
• Electrons
• Protons
• Neutrons

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Alpha particles are nuclei of

• Oxygen
• Nitrogen
• Hydrogen
• Helium

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Radium-226 decays to radon-222 by emitting

• Alpha particles
• Beta particles
• Positrons
• Gamma particles

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The process of one atom changing to another atom because of nuclear decay

• Tadon
• Nuclear mass
• Isotopes
• Transmutation

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