Which of the following is the same for all atoms of the same element?
Tick (✓) one box - AQA - GCSE Physics - Question 5 - 2021 - Paper 1
Question 5
Which of the following is the same for all atoms of the same element?
Tick (✓) one box.
Atomic number
Mass number
Neutron number
Which of the following ... show full transcript
Worked Solution & Example Answer:Which of the following is the same for all atoms of the same element?
Tick (✓) one box - AQA - GCSE Physics - Question 5 - 2021 - Paper 1
Step 1
Which of the following is the same for all atoms of the same element?
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Answer
The correct answer is Atomic number. All atoms of the same element have the same atomic number, which defines the element itself.
Step 2
Which of the following is different for isotopes of the same element?
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Answer
The correct answer is Number of neutrons. Isotopes are variants of the same element that have the same number of protons but a different number of neutrons.
Step 3
Which type of radiation is emitted when nucleus D decays?
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Answer
The correct answer is Alpha. This type of radiation is commonly emitted during the decay of certain unstable nuclei.
Step 4
Which type of radiation is emitted when nucleus E decays?
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Answer
The correct answer is Beta. Beta radiation occurs as a result of certain nuclear reactions.
Step 5
Complete the sentences.
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Answer
The reading on the detector will decrease. This is because the amount of radiation absorbed by the paper will increase.
Step 6
What is meant by 'half-life'?
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Answer
The correct answer is the time it takes for the count rate of a radioactive sample to halve. This term describes the period during which half of the radioactive nuclei decay.
Step 7
Why should the radiation source used in Figure 9 have a long half-life?
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Answer
The correct answer is so the activity of the source is approximately constant. A longer half-life ensures a steady emission of radiation over a longer duration.
