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WorksheetsRadioactivity
Total questions: 15
Worksheet time: 8mins
The half-life of Iodine-131 is 8 days. What does this mean?
The lifespan of Iodine-131 is 8 days
Iodine-131 takes 8 days to become a radioactive material
Iodine-131 takes 8 days to decay to half the amount of its original amount
Iodine-131 takes days to become a non-radioactive material
Which of the following is a non-ionising radiation?
X-ray
Gamma Ray
Microwave
Beta Ray
Which of the following is true about M?
It is neutral
Has high penetrating power
Has high ionisation power
Used to control thickness of metal
"A random and spontaneous process where an unstable nucleus emits radioactive radiation until the nucleus becomes more stable.."
The statement above refer to...
Half -life
Nuclei decay
Radioactivity
Radioactive decay
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
All examples below were radioactive substance, except for....
Uranium-235
Radon-222
Thorium-234
Carbon-16
Alpha particles.....
are positively charged.
consist of two protons and four neutrons.
can penetrate any thickness of matter
All of the above
When a nucleus undergoes gamma decay, the atomic number of the element....
remains the same
decreases by one.
increases by one.
increases by two.
The type of radioactive particle that can be stopped by a sheet of paper is the ____.
alpha particle
beta particle
gamma ray
Negatively charged particles emitted from a nucleus at a high speed are ____.
alpha particle
gamma rays
beta particles
Two atoms of the same element but with different mass numbers are called________
electrons
isotopes
ions
In order of most to least penetrating radiation we have
Alpha , Beta, Gamma
Beta , Gamma , Alpha
Gamma, Beta, Alpha
Gamma, Alpha, Beta
Which type of nuclear radiation is being emitted here?
alpha
beta
gamma
Gamma rays damage human cells/tissue.
True
False
The half-life of strontium-90 is 25 years. How much strontium-90 will remain after 100 years if the initial amount is 4.0 g?
3.0 g
0.25 g
0.3 g
