Atomic Structure/Periodic Table
Isotopes/Average Atomic Mass
Nuclear Decay
Half-Lives
Final Jeopardy
100
What subatomic particle carries a negative charge?
Electrons
100
What makes an atom an isotope?
Having a different number of neutrons/different mass
100
Write the proper format for an alpha particle in a nuclear equation
42He2+
42a2+100
What is a half-life?
The time is takes for 50% of a radioactive sample to decay.
200
How many electrons does neutral Fluorine have?
9 electrons
200
How many neutrons does Titanium-47 have?
25 neutrons
200
What type of radioactive decay particle has no mass?
Gamma particle
200
What percentage of a substance will remain after two half-lives if you start at 100%?
25%
300
What two subatomic particles are found in the nucleus?
Protons and neutrons
300
Hydrogen has three common isotopes: Hydrogen-1, Hydrogen-2, and Hydrogen-3 (AKA protium, deuterium, and tritium). Which of these three isotopes is the most abundant?
Hydrogen-1/Protium
300
Radium-227 has undergone radioactive decay into Actinium-227. What type of decay did the original isotope undergo?
Beta decay
300
If you start with 64 grams of a radioactive isotope with a half-life of 17 years, what is the mass of the isotope after 68 years?
4 grams
400
How many neutrons does Aluminum have on the periodic table?
14 neutrons
400
An element has two natural occurring isotopes, one with a mass of 13.99 amu and a natural abundance of 76%, and the other with a mass of 14.99 amu and a natural abundance of 24%. What is the average atomic mass of this element?
Show your work
14.23 amu
400
What is the daughter isotope for Astatine-212 undergoing alpha decay? Write in nuclear notation.
20883Bi
400
A 32 gram substance has a half-life of 5 minutes. How much of the substance remains after 10 minutes?
8 grams
500
Rank the following elements from heaviest to lightest: Xenon, Calcium, Lead, Oxygen
Lead, Xenon, Calcium, Oxygen
500
Neon has three naturally occurring isotopes, Neon-20, Neon-21, and Neon-22. The natural abundances are 90%, 1%, and 9% respectively. What is the average atomic mass of Neon?
Show your work
20.19 amu
500
Write a nuclear decay equation for Plutonium-239 releasing a beta particle
23994Pu---> 01-B1- + 23995Am
500
If 47 grams of a radioactive substance remains after 24 hours, what was the mass of the original substance if the half-life is 8 hours?
376 grams
500
A doctor claims that a medical patient received a dose of Iodine-131 exactly 24 days ago. To test this claim, the doctor measures the amount of Iodine-131 remaining in the sample and discovers that 12.5% of the original amount remains. Does this evidence prove or disprove the doctor's original claim?
The doctor's claim is correct! The graph show that when 12.5% of the sample is remaining, 24 days have passed.