Carbon-12 and carbon-14 are both isotopes of carbon - AQA - GCSE Physics - Question 3 - 2023 - Paper 1
Question 3
Carbon-12 and carbon-14 are both isotopes of carbon.
Complete the sentences.
Choose answers from the box.
The nucleus of a carbon-12 atom and the nucleus of a carbo... show full transcript
Worked Solution & Example Answer:Carbon-12 and carbon-14 are both isotopes of carbon - AQA - GCSE Physics - Question 3 - 2023 - Paper 1
Step 1
The nucleus of a carbon-12 atom and the nucleus of a carbon-14 atom have the same number of __________.
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Answer
protons
Step 2
The nucleus of a carbon-12 atom and the nucleus of a carbon-14 atom have a different number of __________.
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Answer
neutrons
Step 3
What does 'half-life' mean?
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Answer
The time taken for half the nuclei in a sample to decay.
Step 4
Which isotope is the least stable?
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Answer
Carbon-18
Step 5
Draw one line from each term to an example of the term.
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Answer
Radioactive contamination → Exposure to a beam of gamma rays
Nuclear irradiation → Accidental transfer of plutonium onto a human body
Step 6
Why are workers required to walk across a sticky floor before leaving the nuclear power station?
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Answer
To remove radioactive dust from their shoes.
Step 7
Calculate the number of days a nuclear power station worker must work before receiving the same dose that an aeroplane pilot receives in one day.
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Answer
Number of days = 144
Step 8
Draw one line from each process to its fuel.
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