Unit 3 - Atoms and Nuclear Chemistry Test Review

If you had 10 g of Os-182, how many grams would be left after 3 half lives?

Rhubidium has 2 isotopes: Rb-85 (72.2%) & Rb-87 (27.8%). What's its average atomic mass?

How is nuclear fission useful in the world today?

Stars develop through fusion.

Which nuclear emission is the same as an electron?

Which nuclear emission is the same as a helium atom?

Whose cathode ray tube experiment showed that electrons are negatively charged particles?

Which nuclear emission can be stopped by a sheet of paper?

If an element has two isotopes (mass 40 and 43), where will the average fall?

Dalton's Atomic Theory states that atoms of the same element are the different

Uranium has 3 isopotopes: U-234 (0.01%); U-235 (0.71%); U-238 (99.28%). What's its atomic mass

What is the number above on element's symbol called?

Whose gold foil experiment showed that an atom's volume is mostly electrons?

Which nuclear emission is used to treat cancer?

If Krypton-81 undergoes beta decay, which element is released with beta particle?

Dalton's Atomic Theory states that all matter is composed of

If you had 100 g of Zn-71 (half life = 2.4 min), how much would remain after 7.2 minutes?

The atomic number tells you the number of protons in the nucleus for that element.

Which nuclear decay emission can penetrate furthest through most materials?

What does the number below the element's symbol tell you?

What element is released when Uranium-238 undergoes alpha decay?

Fusion is the splitting of an unstable nucleus into more stable nuclei.

Carbon has an atomic mass of 12.01. Which isotope of carbon is most abundant?

Which nuclear emission is just energy?

Bohr's model of the atom looks very similar to a