1. Making changes This is a product of the science department of Dartford Technology College

2. Question 1 Which food substance contains only the elements carbon, hydrogen and oxygen? Protein Fatty acids Carbohydrates Lipids

3. Question 2 Caustic soda is the common name for which alkaline chemical? Sodium Hydroxide Potassium Hydroxide Lithium Hydroxide Calcium Hydroxide

4. Question 3 What do we call the reaction in which water has been removed from a substance? Hydration Dehydration Rehydration Neutralisation

5. Question 4 What do we call a compound of a metal found naturally in a rock? Oar Awe Ore Or

6. Question 5 Give a term for the burning of a fuel? Evaporation Distillation Condensation Combustion

7. Question 6 A list of metals or non-metals in order of their ability to react? Reactivity Series Order of Reaction Hierarchy of reaction Reaction list

8. Question 7 What do we call the insoluble solid found at the bottom of a test tube after some chemical reactions? Soluble Precipitate Waste Gel

9. Question 8 What type of reaction is it when a substance has oxygen remove from it? Reduction Residue Reflux Resin

10. Question 9 Which of the following is produced in a neutralisation reaction? Acid Alkali Salt Carbon

11. Question 10 What do we call a weak acid found in oranges and lemons? Formic acid Ethanoic acid Citric acid Fructose

12. Question 11 What do we call a particle made from atoms joined together by chemical bonds? Atom Molecule Neutron Proton

13. Question 12 What type of reaction causes a substance to be broken down by heat energy? Oxidation Reduction Displacement Thermal Decomposition

14. Question 13 What device can we use to collect gases in a laboratory? Hoover Beaker Gas syringe Air pump

15. Question 14 A reaction where water is added to a substance is called? Watering Moisturising Dampen Hydration

16. Question 15 When you add more of a substance to make sure the reaction has gone to completion? Sufficient Excess Insufficient Inadequate

17. Question 16 A substance that does not dissolve is said to be? Insatiable Insoluble Insolvable Insolent

18. Question 17 The rocky outer layer of the Earth is called? The Mantle The Core The Ground The Crust

19. Question 18 If we are able to burn a substance it is called? Inflammable Flammable Flame resistant Flame Accelerant

20. Question 19 The starting substance for the manufacture of a particular chemical is called? First material Beginning product First product Starting material

21. Question 20 A method of collecting dense gases in a container? Downward delivery Upward delivery Horizontal delivery Glass delivery

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