Atomic Structure & Nuclear Chemistry Review

Arrange in order of increasing ability to penetrate matter.

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

How many neutrons are in this isotope of Uranium?

• 235
• 92
• 327
• 143

How are these isotopes different?

• Different atomic numbers
• Different number of protons
• Different number of neutrons
• Different number of electrons

What is the mass number of at isotope that has 20 protons, 21 neutrons and 18 electrons?

• 18
• 20
• 21
• 41

What type of nuclear equation is this?

• fusion
• fission
• alpha
• beta

What sort of shield will block gamma rays?

• skin
• paper
• aluminum
• thick lead

In a neutral atom, the number of protons always equals

• the number of neutrons.
• the number of electrons.
• the mass number.
• the average atomic mass.

What happens to the atomic number during alpha decay?

• The atomic number decreases by 4
• The atomic number increases by 1
• The atomic number decreases by 2.
• The atomic number stays the same.

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

• ¹⁴₅B
• ¹⁴₆C
• ¹⁴₇N
• ⁴₂He

Complete the nuclear equation and determine the type of decay that is occurring in this reaction. 

• alpha
• beta
• gamma
• none