GCSE Chemistry – Separating and purifying mixtures

Last updated: 08/06/2020

OCR 21st Century GCSE Science – Chemistry foundation Chemical analysis GCSE Chemistry – Separating and purifying mixtures

Learning Objectives

-I can use the terms filtration, distillation and crystallisation
-I can suggest purification methods for given substances

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Question 1 of 25

1. Question
What is the definition of a mixture?
- A mixture made from two or more different substances that are not chemically bonded together
- Something made from one type of substance
- A mixture made from two or more different substances that are chemically bonded together
- A substance made from only one type of atoms
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Question 2 of 25

2. Question
What are mixtures made from?
- Elements
- Atoms
- Ions
- Particles
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Question 3 of 25

3. Question
What are mixtures made from?
- Compounds
- Atoms
- Ions
- Particles
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Question 4 of 25

4. Question
Describe the bonding within a mixture.
- No chemical bonds between atoms of each substance
- Chemical bonds between atoms of each substance
- Ionic bonds between the different atoms of each substance
- Covalent bonds between the atoms of each substance
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Question 5 of 25

5. Question
Describe the composition of a mixture.
- No fixed composition
- Fixed composition
- Positive composition
- Negative composition
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Question 6 of 25

6. Question
Which of the following is a mixture?
- Concrete
- Water
- Carbon
- Oxygen
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Question 7 of 25

7. Question
Which of the following is a mixture?
- Air
- Ammonia
- Oxygen
- Carbon dioxide
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Question 8 of 25

8. Question
Which of the following is a mixture?
- Pepper
- Carbon
- Sulfur dioxide
- Oxygen
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Question 9 of 25

9. Question
Which of the following is a mixture?
- Sand
- Chlorine
- Hydrogen
- Carbon dioxide
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Question 10 of 25

10. Question
Which of the following is a mixture?
- Salt
- Water
- Carbon
- Oxygen
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Question 11 of 25

11. Question
Which of the following is a mixture?
- NaCl
- Chlorine
- Sodium
- Nitrogen
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Question 12 of 25

12. Question
Which of the following is a mixture?
- Sugar
- Water
- Nickel
- Oxygen
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Question 13 of 25

13. Question
Which property in a mixture allows it to be separated?
- Physical
- Chemical
- Basic
- Acidic
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Question 14 of 25

14. Question
Which is a method of separating mixtures?
- Filtration
- Reflux
- pH testing
- Titration
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Question 15 of 25

15. Question
Which is a method of separating mixtures?
- Crystallisation
- Melting and boiling points
- Boiling
- Heating
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Question 16 of 25

16. Question
Which is a method of separating mixtures?
- Distillation
- Reflux
- Evaporation
- Boiling
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Question 17 of 25

17. Question
Which is a method of separating mixtures?
- Chromatography
- Titration
- Melting and boiling points
- pH testing
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Question 18 of 25

18. Question
What type of paper is needed during filtration?
- Filter paper
- Chromatography paper
- Litmus paper
- Tissue paper
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Question 19 of 25

19. Question
What process is used during crystallisation?
- Evaporation
- Filtration
- Chromatography
- Neutralisation
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Question 20 of 25

20. Question
What is evaporated during crystallisation?
- Water
- Mixture
- Ethanol
- Solvent
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Question 21 of 25

21. Question
What is formed during crystallisation?
- Crystals
- Water
- Compounds
- Mixtures
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Question 22 of 25

22. Question
What process is used during distillation?
- Heating
- Filtration
- Chromatography
- Titration
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Question 23 of 25

23. Question
What process is used during distillation?
- Boiling
- Filtration
- Chromatography
- Titration
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Question 24 of 25

24. Question
What process is used during distillation?
- Condensing
- Filtration
- Chromatography
- Titration
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Question 25 of 25

25. Question
Which of the following can be separated?
- Mixtures
- Compounds
- Elements
- Atoms
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