Radioactive Decay

In the equation, ¹⁴₆C --> ¹⁴₇N + ⁰_-1B, the _______ decay of radioactive carbon-14 results in the creation of a new nitrogen-14 atom.

• Gamma

• Beta

• Alpha

Uranium-238  decays into  Thorium-234  by emitting .........

• an alpha particle
• a beta particle
• gamma rays
• visible light

The nucleus is held together by the ___________________________force.

• The Strong Nuclear Force

• The Weak Nuclear Force

• Electromagnetism

• Gravity

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

²⁴⁰₉₄Pu —› ____ + ⁴₂He

• ²³⁶₉₂U

• ²⁴⁷₉₆Cm

• ²⁴⁴₉₃Np

• ²⁴²₉₅Am

How many protons are in this atom?

• 3
• 4
• 6
• 10

How many neutrons are in this isotope of Uranium?

• 235
• 92
• 327
• 143

How is the alpha particle written in a nuclear equation?

• ⁴₂He

• ²₄He

• ⁰_-1e

• ⁰₀γ

A helium nucleus with two protons and two neutrons is called a(n) ____.  

• alpha particle
• electroscope
• beta particle
• gamma ray

Solve this equation for alpha decay.
₈₅²⁰⁹At = ___ + ₂⁴He

• ₈₃²⁰⁵Bi
• ₈₆²⁰⁹Rn
• ₈₁²⁰⁷Tl
• ₈₅²⁰⁸At