Physical Science - Nuclear Chemistry

Element X decays to element Y with a half-life of 5 years. After 20 years, how much of a 500g sample of X remains?

• 500g

• 31.25g

• 250g

• 125g

What is emitted during Alpha Radiation?

• A helium nuclei.

• A helium atom

• Gamma Rays.

• Positrons

Balance the following equation:
¹⁴₆C --> ⁰_-1e + ________

• ¹⁴₅B

• ¹⁴₆C

• ¹⁴₇N

• ⁴₂He

Which type of nuclear radiation is seen here?

• Alpha

• beta

• gamma

• none

Which nuclear process is shown in the picture?

• fission

• fusion

• alpha decay

• beta decay

Arrange in order of increasing ability to penetrate matter.

• Beta, gamma, alpha

• Alpha, gamma, beta

• Gamma, beta, alpha

• Alpha, beta, gamma

What particle completes this reaction?

• alpha particle

• beta particle

• gamma particle

• neutron

Gamma rays have a _____ charge

• 0

• +1

• -1

• +2

Has the highest penetrating power.  Can penetrate our body.  Even several cm thick of lead or several meters thick of concrete cannot stop all of it.

• Alpha

• Beta

• Gamma

Has the symbol

• Alpha

• Beta 

• Gamma