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Group 0

8th grade (Year 9 in England) · 16 questions · Common Core: NGSS.HS-PS1-1 · England: GCSE Combined Science: Atomic structure and the periodic table (group 0)

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1
Question 1
Which noble gas is used for cooling the magnets in MRI scanners?
- A. helium
- B. neon
- C. argon
2
Question 2
The noble gases: which statement is NOT true?
- A. Helium has a full outer shell with only two electrons.
- B. Neon glows red-orange in electric signs.
- C. Noble gases form diatomic molecules like Cl₂.
- D. Noble gases exist as single atoms.
3
Question 3
Why is helium, not hydrogen, used in party balloons and airships today?
- A. Hydrogen is a noble gas
- B. Helium is cheaper than air
- C. Helium is less dense than air and does not burn
- D. Helium is denser than air
4
Question 4
Which noble gas is used for cooling the magnets in MRI scanners?
- A. helium
- B. neon
- C. argon
5
Question 5
The noble gases: which statement is NOT true?
- A. Noble gases are colourless at room temperature.
- B. Helium has a full outer shell with only two electrons.
- C. Noble gases exist as single atoms.
- D. Noble gases have eight electrons in every shell.
6
Question 6
Why is helium, not hydrogen, used in party balloons and airships today?
- A. Hydrogen is a noble gas
- B. Helium is denser than air
- C. Helium is less dense than air and does not burn
- D. Helium is cheaper than air
7
Question 7
Which noble gas is used for filling the gap in some double glazing?
- A. helium
- B. neon
- C. argon
8
Question 8
The noble gases: which statement is NOT true?
- A. Noble gases exist as single atoms.
- B. Neon glows red-orange in electric signs.
- C. Helium has a full outer shell with only two electrons.
- D. Noble gases form diatomic molecules like Cl₂.
9
Question 9
Why are noble gases so unreactive?
- A. They are metals
- B. They are too heavy
- C. Their outer electron shell is full
- D. They have no electrons
10
Question 10
Which noble gas is used for cooling the magnets in MRI scanners?
- A. helium
- B. neon
- C. argon
11
Question 11
The noble gases: which statement is NOT true?
- A. Helium has a full outer shell with only two electrons.
- B. Neon glows red-orange in electric signs.
- C. Noble gases exist as single atoms.
- D. Noble gases react easily with oxygen.
12
Question 12
Why are noble gases so unreactive?
- A. Their outer electron shell is full
- B. They have no electrons
- C. They are too heavy
- D. They are metals
13
Question 13
Which noble gas is used for filling the gap in some double glazing?
- A. helium
- B. neon
- C. argon
14
Question 14
The noble gases: which statement is NOT true?
- A. Noble gases have eight electrons in every shell.
- B. Helium has a full outer shell with only two electrons.
- C. Noble gases exist as single atoms.
- D. Neon glows red-orange in electric signs.
15
Question 15
Why is argon used inside some light bulbs and for welding?
- A. It burns very hot
- B. It conducts electricity like a metal
- C. It is unreactive, so it stops hot metal reacting with oxygen
- D. It glows bright green
16
Question 16
Which noble gas is used for cooling the magnets in MRI scanners?
- A. helium
- B. neon
- C. argon

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Answer key: Group 0

1. A. helium
2. C. Noble gases form diatomic molecules like Cl₂.
3. C. Helium is less dense than air and does not burn
4. A. helium
5. D. Noble gases have eight electrons in every shell.
6. C. Helium is less dense than air and does not burn
7. C. argon
8. D. Noble gases form diatomic molecules like Cl₂.
9. C. Their outer electron shell is full
10. A. helium
11. D. Noble gases react easily with oxygen.
12. A. Their outer electron shell is full
13. C. argon
14. A. Noble gases have eight electrons in every shell.
15. C. It is unreactive, so it stops hot metal reacting with oxygen
16. A. helium