Chemistry (All)
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Chemistry (All)
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25 Questions

1. After adding nitric acid and silver nitrate to a solution containing iodide ions - what colour precipitate is formed?

2. During the electrolysis of water - oxygen gas is given off. The formation of this gas can be represented by the ionic equation: ....OH⁻ →....H₂o + ....O₂ + ....e−

3. How to measure the speed of reaction

4. Describe how you would test for cu²⁺ ions

5. Describe the laboratory preparation of oxygen from hydrogen peroxide

6. Test for chloring

7. Describe an experiment to show that iron rusts quicker in salt water than rain water

8. Conversions

9. Suggest why a higher temperature is not used in the haber process

10. What is an atom made up of?

11. Ionic compound vs covalent compound: volatility

12. State a use for n₂

13. Write an equation to show the formation of the product at the cathode during the electrolysis of copper chloride

14. Hydration

15. Half equations

16. Name the useful compound present in haematite

17. Electron orbitals

18. Write a chemical equation for the cracking of decane

19. Transition metals properties

20. Alloy

21. What do reducing agents do

22. What happens to the rate of reaction if the concentration of solutions is increased?

23. Intramolecular forces

24. State and explain which species in the reactions are oxidation or reduction

25. Period number

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