An electron emitted from the nucleus is:

Unstable atoms undergo radioactive decay in order to reach

Time for a sample to decay to half the original amount

A neutron hits a U-235 atom, and it splits. This is an example of:

What is the symbol for an alpha particle?

Which particle completes this reaction?

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

What is the missing isotope that will balance the following nuclear equation?

⁹₄Be + ¹₁H → _____ + ⁴₂He

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

What do two different isotopes of an atom have in common?

When nuclei decay, massive amounts of __________ are released.

What type of reaction is this?

What type of nuclear reaction is this?

In order of most to least penetrating radiation, we have:

Identify the symbol

Identify the symbol

The technetium-99 isotope has a half-life of 6.0 hours. If 100.0 mg were injected into a patient, how much remains after 18 hours?

Spontaneous emission from the nucleus of an atom

Identify the particle with a charge of +1 and a mass equal to that of an electron.

The half-life of Calcium-47 is approximately 5 days. If you start with 64g of this isotope, how much would remain after 20 days?

One product of all nuclear fusion reactions is

Fusion reactions require ___.

This type of reaction supplies the energy that powers the stars and our Sun.