The formation of uranium-236 from plutonium-240 occurs by:

If a substance has a half-life of 5 years, then how much of the initial sample remains after 15 years?

When neptunium-238 decays, it emits two alpha particles, a beta particle, and a gamma particle. The resulting isotope is:

The difference between the mass of the nucleus and the sum of each individual nucleon is:

Carbon-14 emits an electron and it becomes Nitrogen-14. Which of the following is this an example of?

If the amount of Zn-71 was reduced from 50 grams to 12.5 grams in 4 minutes, what is the half-life of Zn-71?

What is the product of a cobalt-60 atom that undergoes two beta decays?

During a nuclear reaction, mass is lost. Which of the following does this result in?

Cobalt-57 has a half-life of about 272 days. If a sample has an initial mass of 2.24 grams and undergoes decay until it has a mass of 0.140 grams, then how many half-lives passed?

Which of the following statements is NOT true regarding the process of nuclear fusion?

When does the atomic number always change?

A 6.95 gram sample of radioactive nobelium-259 has a half-life of 58 min. How much is left after 2 hours and 54 minutes?

An element undergoes gamma decay to form lead-206. What was the identity of that initial element?