GCSE Chemistry – Fractional distillation

Last updated: 14/04/2020
WJEC GCSE Science – Double science foundation Crude oil, fuels and organic chemistry GCSE Chemistry – Fractional distillation

Learning Objectives

-I can describe the process of fractional distillation and can recall why we need to distil oil into fractions
-I can state some uses for the fractions of crude oil
-I can recall how boiling point changes with chain length
-I can recall how viscosity changes with chain length
-I can recall how flammability changes with chain length

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  1. Current
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  3. Answered

  1. Why is fractional distillation used?

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  2. What is fractional distillation used to separate?

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  3. What is fractional distillation used to separate?

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  4. What mixture undergoes fractional distillation?

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  5. What is the natural state of crude oil?

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  6. Before crude oil is fractional distilled, what state should it be?

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  7. What is the name of the piece of equipment used during fractional distillation?

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  8. What is the definition of a fraction within fractional distillation?

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  9. Where is the crude oil placed into the fractional distillation column?

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  10. Describe the movement of the vaporised crude oil within fractional distillation.

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  11. During fractional distillation, where are the hydrocarbons with the highest boiling points condensed?

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  12. During fractional distillation, where are the hydrocarbons with the lowest boiling points condensed?

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  13. During fractional distillation, where are the hydrocarbons with the longest carbon chains condensed?

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  14. During fractional distillation, where are the hydrocarbons with the shortest carbon chains condensed?

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  15. How is liquid crude oil turned to gaseous crude oil?

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  16. How is the gaseous crude oil turned back into liquid crude oil?

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  17. Which of the following types of products can be obtained from fractional distillation?

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  18. Which of the following types of products can be obtained from fractional distillation?

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  19. Which of the following types of products can be obtained from fractional distillation?

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  20. Which of the following types of products can be obtained from fractional distillation?

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  21. Which of the following types of products can be obtained from fractional distillation?

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  22. Compare the boiling points of shorted chain hydrocarbons and longer chain hydrocarbons.

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  23. Compare the volatility of shorted chain hydrocarbons and longer chain hydrocarbons.

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  24. Compare the viscosity of shorted chain hydrocarbons and longer chain hydrocarbons.

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  25. Compare the flammability of shorter chain hydrocarbons and longer chain hydrocarbons.

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