1. 1. Alpha decay of radium-226 with gamma emission
Write the balanced nuclear equation:
1. Alpha decay of radium-226 with gamma emission
2. What is the half-life of for the unknown isotope?
3. What mass of the unknown isotope will remain after 300 years?
4. How much time would it take for 20 g of the unknown isotope to decay? 5.
Hyphen Notation
Nuclear Symbol
Atomic Number
Nucleus Composition
Mass Number
Number of Electrons
# of Protons
# of Neutrons
Potassium-41

2. 6. Given the balanced equation representing a nuclear reaction:
Which phrase identifies and describes this reaction?
a. fission, mass converted to energy
b. fission, energy converted to mass
c. fusion, mass converted to energy
d. fusion, energy converted to mass
7. During a nuclear reaction, mass is converted into
a. Charge
b. Isomers
c. Energy
d. Volume

3. 8. Identify the types of radiation that are stopped by these objects