KS3 Unit 9h – Using Chemistry 1© NTScience.co.uk 2005

Using Chemistry

KS3 Unit 9h – Using Chemistry 2© NTScience.co.uk 2005

Q1. Name the process where new chemical products form from chemical reactants.

KS3 Unit 9h – Using Chemistry 3© NTScience.co.uk 2005

A1. Reaction

KS3 Unit 9h – Using Chemistry 4© NTScience.co.uk 2005

Q2. Give another word for burning something in

air.

KS3 Unit 9h – Using Chemistry 5© NTScience.co.uk 2005

A2. Combustion

KS3 Unit 9h – Using Chemistry 6© NTScience.co.uk 2005

Q3. What do we call a rapid expansion of hot gases as a chemical reaction takes place.

KS3 Unit 9h – Using Chemistry 7© NTScience.co.uk 2005

A3. Explosion

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Q4. What do we call a chemical reaction with

oxygen.

KS3 Unit 9h – Using Chemistry 9© NTScience.co.uk 2005

A4. Oxidation

KS3 Unit 9h – Using Chemistry 10© NTScience.co.uk 2005

Q5. What do we call the process where we

produce palatable food by application of heat.

KS3 Unit 9h – Using Chemistry 11© NTScience.co.uk 2005

A5. Cooking

KS3 Unit 9h – Using Chemistry 12© NTScience.co.uk 2005

Q6. What do you call the unwanted reaction

between a metal and the atmosphere or water.

KS3 Unit 9h – Using Chemistry 13© NTScience.co.uk 2005

A6. Corrosion

KS3 Unit 9h – Using Chemistry 14© NTScience.co.uk 2005

Q7. What do we call a very long molecule

formed from a string of identical chemical

building blocks? Often a type of plastic.

KS3 Unit 9h – Using Chemistry 15© NTScience.co.uk 2005

A7. Polymer

KS3 Unit 9h – Using Chemistry 16© NTScience.co.uk 2005

Q8. What is a chemical building block used to form plastics called?

KS3 Unit 9h – Using Chemistry 17© NTScience.co.uk 2005

A8. A monomer

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Q9. Name the process of breaking long chain

hydrocarbon molecules into more useful short

chain molecules.

KS3 Unit 9h – Using Chemistry 19© NTScience.co.uk 2005

A9. Cracking

KS3 Unit 9h – Using Chemistry 20© NTScience.co.uk 2005

Q10. What is the general name for a polymer like

polythene, polypropylene, nylon

and polystyrene.

KS3 Unit 9h – Using Chemistry 21© NTScience.co.uk 2005

A10. Plastic

KS3 Unit 9h – Using Chemistry 22© NTScience.co.uk 2005

Q11. Name a fossil fuel raw material used to make most plastics.

KS3 Unit 9h – Using Chemistry 23© NTScience.co.uk 2005

A11. Oil

KS3 Unit 9h – Using Chemistry 24© NTScience.co.uk 2005

Q12. What is a portion of crude oil with a particular

boiling point called?

KS3 Unit 9h – Using Chemistry 25© NTScience.co.uk 2005

A12. A fraction

KS3 Unit 9h – Using Chemistry 26© NTScience.co.uk 2005

Q13. What is the technique used to

separate liquids with different boiling points

called?

KS3 Unit 9h – Using Chemistry 27© NTScience.co.uk 2005

A13. Distillation

KS3 Unit 9h – Using Chemistry 28© NTScience.co.uk 2005

Q14. Name the fossil fuel used in jet aircraft, also called kerosene.

KS3 Unit 9h – Using Chemistry 29© NTScience.co.uk 2005

A14. Paraffin

KS3 Unit 9h – Using Chemistry 30© NTScience.co.uk 2005

Q15. What do we call a substance that increases

the rate of a chemical reaction but that is not

used up itself.

KS3 Unit 9h – Using Chemistry 31© NTScience.co.uk 2005

A15. A catalyst

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Q16. What do we call an atom with an excess positive or negative

electric charge.

KS3 Unit 9h – Using Chemistry 33© NTScience.co.uk 2005

A16. An ion

KS3 Unit 9h – Using Chemistry 34© NTScience.co.uk 2005

Q17. What do we call a negative ion that travels

towards the positive anode?

KS3 Unit 9h – Using Chemistry 35© NTScience.co.uk 2005

A17. An anion

KS3 Unit 9h – Using Chemistry 36© NTScience.co.uk 2005

Q18. What do we call a positive ion that travels towards the negative

cathode.

KS3 Unit 9h – Using Chemistry 37© NTScience.co.uk 2005

A18. A cation

KS3 Unit 9h – Using Chemistry 38© NTScience.co.uk 2005

Q19. What do we call a tiny particle, much lighter

than an atom, that carries a negative electric charge?

KS3 Unit 9h – Using Chemistry 39© NTScience.co.uk 2005

A19. An electron

KS3 Unit 9h – Using Chemistry 40© NTScience.co.uk 2005

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