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Alkanes and the fractions of crude oil

9th grade (Year 10 in England) · 11 questions · Common Core: NGSS.HS-PS1-1, NGSS.HS-ESS3-2 · England: GCSE Combined Science: Organic chemistry

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  1. Question 1

    Alkanes have the general formula CₙH₂ₙ₊₂. How many hydrogen atoms are in an alkane with 10 carbon atoms?

    Answer

  2. Question 2

    Why is crude oil called a finite (non-renewable) resource?

    • A. It formed over millions of years and is used much faster than it forms
    • B. It is made in factories
    • C. It is made from sunlight each day
    • D. It never runs out

  3. Question 3

    Alkanes have the general formula CₙH₂ₙ₊₂. How many hydrogen atoms are in an alkane with 4 carbon atoms?

    Answer

  4. Question 4

    Why is crude oil called a finite (non-renewable) resource?

    • A. It is made in factories
    • B. It never runs out
    • C. It formed over millions of years and is used much faster than it forms
    • D. It is made from sunlight each day

  5. Question 5

    Alkanes have the general formula CₙH₂ₙ₊₂. How many hydrogen atoms are in an alkane with 2 carbon atoms?

    Answer

  6. Question 6

    Why is crude oil called a finite (non-renewable) resource?

    • A. It formed over millions of years and is used much faster than it forms
    • B. It is made in factories
    • C. It never runs out
    • D. It is made from sunlight each day

  7. Question 7

    Alkanes have the general formula CₙH₂ₙ₊₂. How many hydrogen atoms are in an alkane with 9 carbon atoms?

    Answer

  8. Question 8

    Why is crude oil called a finite (non-renewable) resource?

    • A. It is made from sunlight each day
    • B. It formed over millions of years and is used much faster than it forms
    • C. It never runs out
    • D. It is made in factories

  9. Question 9

    Alkanes have the general formula CₙH₂ₙ₊₂. How many hydrogen atoms are in an alkane with 9 carbon atoms?

    Answer

  10. Question 10

    How does fractional distillation separate crude oil?

    • A. A magnet pulls out each fraction
    • B. Each fraction is filtered out
    • C. The oil is frozen in layers
    • D. Hydrocarbons condense at different heights of a column depending on their boiling points

  11. Question 11

    Alkanes have the general formula CₙH₂ₙ₊₂. How many hydrogen atoms are in an alkane with 8 carbon atoms?

    Answer

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Answer key: Alkanes and the fractions of crude oil

  1. 1. 22

  2. 2. A. It formed over millions of years and is used much faster than it forms

  3. 3. 10

  4. 4. C. It formed over millions of years and is used much faster than it forms

  5. 5. 6

  6. 6. A. It formed over millions of years and is used much faster than it forms

  7. 7. 20

  8. 8. B. It formed over millions of years and is used much faster than it forms

  9. 9. 20

  10. 10. D. Hydrocarbons condense at different heights of a column depending on their boiling points

  11. 11. 18