GCSE Chemistry – Features of isotopes

Last updated: 21/07/2020

GCSE Science CIE – Combined science extended Atoms, elements and compounds GCSE Chemistry – Features of isotopes

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-I can define isotopes

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Question 1 of 22

1. Question
What is the definition of an isotope?
- Atoms of the same element with a different number of neutrons and different masses
- Atoms of the same element with a different number of electrons and different masses
- Atoms of the same element with a different electronic structure
- Atoms of the same element with a different number of protons and the same masses
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Question 2 of 22

2. Question
Which of the following statements is true for an isotope?
- They have a different number of neutrons
- They have the same number of neutrons
- They have a different electronic structure
- They have a different number of protons
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Question 3 of 22

3. Question
Which of the following statements is true for an isotope?
- They have different masses
- They have the same number of neutrons
- They have a different electronic structure
- They have a different number of protons
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Question 4 of 22

4. Question
Work out the number of protons, neutrons and electrons within $^{85}$ Br $_{35}$ .
- Protons – 35 Neutrons – 50 Electrons – 35
- Protons – 32 Neutrons – 50 Electrons – 32
- Protons – 34 Neutrons – 49 Electrons – 34
- Protons – 50 Neutrons – 35 Electrons – 50
Correct

Incorrect
Question 5 of 22

5. Question
Work out the number of protons, neutrons and electrons within $^{45}$ Ar $_{18}$ .
- Protons – 18 Neutrons – 27 Electrons – 18
- Protons – 17 Neutrons – 26 Electrons – 17
- Protons – 18 Neutrons – 18 Electrons – 27
- Protons – 18 Neutrons – 19 Electrons – 18
Correct

Incorrect
Question 6 of 22

6. Question
Work out the number of protons, neutrons and electrons within $^{82}$ Se $_{34}$ .
- Protons – 34 Neutrons – 48 Electrons – 34
- Protons – 34 Neutrons – 46 Electrons – 34
- Protons – 48 Neutrons – 48 Electrons – 35
- Protons – 35 Neutrons – 48 Electrons – 34
Correct

Incorrect
Question 7 of 22

7. Question
Work out the number of protons, neutrons and electrons within $^{42}$ K $_{19}$ .
- Protons – 19 Neutrons – 23 Electrons – 19
- Protons – 18 Neutrons – 22 Electrons – 18
- Protons – 17 Neutrons – 21 Electrons – 18
- Protons – 20 Neutrons – 23 Electrons – 19
Correct

Incorrect
Question 8 of 22

8. Question
Work out the number of protons, neutrons and electrons within $^{17}$ O $_8$ .
- Protons – 8 Neutrons – 9 Electrons – 8
- Protons – 9 Neutrons – 8 Electrons – 8
- Protons – 8 Neutrons – 8 Electrons – 10
- Protons – 7 Neutrons – 9 Electrons – 6
Correct

Incorrect
Question 9 of 22

9. Question
Work out the number of protons, neutrons and electrons within $^{15}$ C $_6$ .
- Protons – 6 Neutrons – 9 Electrons – 6
- Protons – 8 Neutrons – 9 Electrons – 8
- Protons – 9 Neutrons – 9 Electrons – 8
- Protons – 7 Neutrons – 9 Electrons – 7=9
Correct

Incorrect
Question 10 of 22

10. Question
Work out the number of protons, neutrons and electrons within $^{30}$ P $_{15}$ .
- Protons – 15 Neutrons – 15 Electrons – 15
- Protons – 14 Neutrons – 17 Electrons – 14
- Protons – 15 Neutrons – 15 Electrons – 14
- Protons – 16 Neutrons – 14 Electrons – 14
Correct

Incorrect
Question 11 of 22

11. Question
Work out the number of protons, neutrons and electrons within $^{27}$ Na $_{11}$ .
- Protons – 11 Neutrons – 16 Electrons – 11
- Protons – 11 Neutrons – 15 Electrons – 11
- Protons – 10 Neutrons – 13 Electrons – 10
- Protons – 11 Neutrons – 16 Electrons – 16
Correct

Incorrect
Question 12 of 22

12. Question
Work out the number of protons, neutrons and electrons within $^8$ He $_2$ .
- Protons – 2 Neutrons – 6 Electrons – 2
- Protons – 4 Neutrons – 6 Electrons – 6
- Protons – 6 Neutrons – 2 Electrons – 6
- Protons – 4 Neutrons – 6 Electrons – 4
Correct

Incorrect
Question 13 of 22

13. Question
Work out the number of protons, neutrons and electrons within $^{20}$ N $_7$ .
- Protons – 7 Neutrons – 13 Electrons – 7
- Protons – 8 Neutrons – 13 Electrons – 7
- Protons – 6 Neutrons – 12 Electrons – 6
- Protons – 7 Neutrons – 7 Electrons – 7
Correct

Incorrect
Question 14 of 22

14. Question
Work out the number of protons, neutrons and electrons within $^{22}$ F $_9$ .
- Protons – 9 Neutrons – 13 Electrons – 9
- Protons – 8 Neutrons – 12 Electrons – 9
- Protons – 9 Neutrons – 13 Electrons – 13
- Protons – 8 Neutrons – 14 Electrons – 8
Correct

Incorrect
Question 15 of 22

15. Question
Work out the number of protons, neutrons and electrons within $^{215}$ At $_{85}$ .
- Protons – 85 Neutrons – 130 Electrons – 85
- Protons – 82 Neutrons – 82 Electrons – 130
- Protons – 84 Neutrons – 130 Electrons – 84
- Protons – 132 Neutrons – 84 Electrons – 84
Correct

Incorrect
Question 16 of 22

16. Question
Work out the number of protons, neutrons and electrons within $^{12}$ Be $_4$ .
- Protons – 4 Neutrons – 8 Electrons – 4
- Protons – 6 Neutrons – 8 Electrons – 4
- Protons – 4 Neutrons – 12 Electrons – 4
- Protons – 8 Neutrons – 8 Electrons – 9
Correct

Incorrect
Question 17 of 22

17. Question
Work out the number of protons, neutrons and electrons within $^{30}$ Al $_{13}$ .
- Protons – 13 Neutrons – 17 Electrons – 13
- Protons – 17 Neutrons – 12 Electrons – 16
- Protons – 16 Neutrons – 13 Electrons – 16
- Protons – 17 Neutrons – 13 Electrons – 13
Correct

Incorrect
Question 18 of 22

18. Question
Work out the number of protons, neutrons and electrons within $^{28}$ Mg $_{12}$ .
- Protons – 12 Neutrons – 16 Electrons – 12
- Protons – 14 Neutrons – 12 Electrons – 12
- Protons – 12 Neutrons – 13 Electrons – 12
- Protons – 16 Neutrons – 12 Electrons – 16
Correct

Incorrect
Question 19 of 22

19. Question
Work out the number of protons, neutrons and electrons within $^{82}$ Br $_{35}$ $^-$ .
- Protons – 37 Neutrons – 47 Electrons – 36
- Protons – 32 Neutrons – 36 Electrons – 37
- Protons – 31 Neutrons – 46 Electrons – 35
- Protons – 35 Neutrons – 35 Electrons – 34
Correct

Incorrect
Question 20 of 22

20. Question
Work out the number of protons, neutrons and electrons within $^{38}$ Cl $_{17}$ $^-$ .
- Protons – 17 Neutrons – 21 Electrons – 18
- Protons – 16 Neutrons – 20 Electrons – 17
- Protons – 17 Neutrons – 18 Electrons – 16
- Protons – 7 Neutrons – 9 Electrons – 23
Correct

Incorrect
Question 21 of 22

21. Question
Work out the number of protons, neutrons and electrons within $^{30}$ Al $_{13}$ $^{3+}$ .
- Protons – 13 Neutrons – 17 Electrons – 10
- Protons – 10 Neutrons – 20 Electrons – 12
- Protons – 10 Neutrons – 10 Electrons – 16
- Protons – 13 Neutrons – 16 Electrons – 13
Correct

Incorrect
Question 22 of 22

22. Question
Work out the number of protons, neutrons and electrons within $^{20}$ O $_8$ $^{2-}$ .
- Protons – 8 Neutrons – 12 Electrons – 10
- Protons – 12 Neutrons – 8 Electrons – 8
- Protons – 10 Neutrons – 8 Electrons – 6
- Protons – 8 Neutrons – 10 Electrons – 8
Correct

Incorrect