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WorksheetsRadioactivity
Total questions: 20
Worksheet time: 25mins
Identify the type of nuclear decay shown here
21483Bi → 0-1e + 21484Po
alpha
beta
gamma
Finish this equation
20983Bi--> _______ + 20581Tl
42He
0-1e
y
85209At = ___ + 24He
Identify the missing substance in each of the following nuclear reaction.
_____→13756 Ba + 0−1 e
13755Ba
13757La
13856Ba
13755Cs
2760Co = ___ + -10e
Iodin-131 decays with half-life is 8 days to become Xenon-131. Calculate the mass of Iodin-131 after 24 days with a mass of 60g.
7.5 g
8.5 g
12.5 g
15.5 g
A radioactive source emits radiation that can pass through a sheet of paper but not through thick aluminium. What does this show about the radiation?
It is alpha-particles.
It is beta-particles.
It is gamma-rays.
It is a mixture of alpha-particles and gamma-rays
Which type of radiation has the greatest ionising effect?
α-particles
β-particles
γ-rays
all have the same ionising effect
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
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
The % of the parent isotope remaining after 1 Half Life.
50%
25%
12.5%
6.25%
Alpha decay of radium-226, the most abundant isotope of radium.
Radioactive decay of carbon-14, which is used in radiocarbon dating of previously living material.
Alpha decay of the artificially produced radioisotope that is used in smoke detectors.
Copper-66 undergoes two beta decays.
