Too much radiation can cause what?
Cancer
CHALLENGE
What are the three kinds of radioactive decay?
Alpha, Beta, and Gamma
The head of a golf club might contain 123 grams of titanium. How many moles is this?
2.57 moles
CHALLENGE
What is the large positive center of the atom?
The nucleus.
CHALLENGE
What is the difference between fission and fusion?
Fission is division of a heavy nucleus, Fusion is the combination of two lighter nuclei.
CHALLENGE
What makes up the mass number
protons and neutrons
What stops a gamma ray's penetrating power?
2 inches of lead
CHALLENGE
What are three applications of nuclear chemistry?
Medicine, Agriculture, Weapons, Powerplants, Nuclear Waste, Carbon Dating, Chernobyl
After 40 years, 5.0 mg of a 72.0 mg sample of an unknown isotope remain. Find the half-life of the unknown isotope. SHOW WORK.
.281 grams
What is the amu of a proton
1.00 amu
An isotope are atoms with identical atomic numbers but different mass numbers. With this in mind what is the # of neutrons in carbon-14
8 neutrons
CHALLENGE
0-1B
What is a useful part of nuclear energy?
Does not release greenhouse gases.
CHALLENGE
Write the isotopic notation of oxygen-18.
188O
What are Radioisotopes?
Atoms containing radioactive nuclei
CHALLENGE
Draw an atom with 5 protons, 6 neutrons, and 5 electrons.
Based on drawing.
Write the following nuclear reaction:
Uranium-238 undergoes alpha and gamma decay.
23892U--->23590Th + 42He + 00Y
Why isn't fusion practical to generate energy?
It takes too much energy to initiate the process.
Hydrogen found in nature weighs 1 amu 99.984% of the time, and 2 amu 0.016% of the time. What is its average atomic mass?
1.00016 amu H
CHALLENGE