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Worksheets2.5 Radioactivity
Total questions: 24
Worksheet time: 15mins
The three types of nuclear radiation in order of increasing penetrating power are
alpha, beta, gamma
alpha, gamma, beta
beta, alpha, gamma
gamma, alpha, beta
A certain radioactive sample has a half life of 2 years. After 6 years, how much of the sample is left?
1/2
1/3
1/16
1/8
_______________ is the process by which unstable atoms emit radiation until they become stable.
Nuclear Fission
Chemical Reaction
Radioactive Decay
Nuclear Fusion
What is the mass number of this isotope?
131
53
184
78
What is the atomic number of this isotope?
131
53
184
78
How many protons does this isotope have?
131
53
184
78
How many neutrons does this isotope have?
131
53
184
78
An alpha particle is made up of
2 protons and 4 neutrons
1 proton and 1 neutron
2 protons and 2 neutrons
4 protons and 2 neutrons
Which type of nuclear radiation can be stopped by a sheet of paper?
Alpha
Beta
Gamma
Which type of nuclear radiation can be stopped 60 cm of aluminum or 7 cm of lead?
Alpha
Beta
Gamma
A sample of Radium-228 decays from 100g to 12.5g. How many half lives did it experience?
1
2
3
4
How much of a 250g sample would be left after 5 half lives?
125g
62.5g
31.25g
7.81g
What are the rules in a Nuclear Reaction?
Conservation of Charge and Atomic number
Conservation of Charge and Nucleon Number
Conservation of Atomic Number and Mass
Conservation of Nucleon Number and Mass Number
What is the Half Life of this isotope?
3 days
5 days
8 days
10 days
What is the Half life of this isotope?
5 seconds
10 seconds
15 seconds
20 seconds
