Carbon-13 and carbon-14 are isotopes of carbon - Edexcel - GCSE Physics - Question 9 - 2019 - Paper 1
Question 9
Carbon-13 and carbon-14 are isotopes of carbon.
Nuclei of carbon-13 and carbon-14 can be represented by these symbols
\(^{13}_{6}C\) and \(^{14}_{6}C\)
Complete t... show full transcript
Worked Solution & Example Answer:Carbon-13 and carbon-14 are isotopes of carbon - Edexcel - GCSE Physics - Question 9 - 2019 - Paper 1
Step 1
Complete the table for an atom of carbon-13
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Answer
Carbon-13 has 7 neutrons (since its atomic mass is 13 and it has 6 protons), and it also has 6 electrons, which are equal to the number of protons in a neutral atom.
Step 2
Complete the table for an atom of carbon-14
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Answer
Carbon-14 has 8 neutrons (since its atomic mass is 14 and it has 6 protons), and it similarly has 6 electrons.
Step 3
State the name of an instrument that can be used to measure radioactivity.
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Answer
A Geiger-Muller (GM) counter can be used to measure radioactivity.
Step 4
State two sources of background radiation.
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