2. Obtaining and Using Metals Click to start

3. Question 1 Which pair of metals can be found in the ground as uncombined elements? Aluminium and Copper Sodium and Magnesium Gold and Platinum Iron and Silver

4. Wrong Answer!

5. An alloy Question 2 A rock which contains enough metal to be economically viable to extract is called… A polymerAn ore Metallic

6. Wrong Answer!

7. Question 3 By which process is iron extracted from iron oxide on an industrial scale? Reduction with carbon Filtration EvaporationElectroysis

8. Wrong Answer! Explanation or correct answer here

9. Question 4 A mixture of metals is called… An oreA polymer MetallicAn alloy

10. Wrong Answer!

11. Question 5 Bronze is… A mixture of copper and tin An element A compound of iron and tin A mixture of iron and zinc

12. Wrong Answer!

13. Question 6 Which one of the following metals is ideal for use in making aircraft frames? GoldIron copperAluminium

14. Wrong Answer!

15. Question 7 When compared to iron, stainless steel is… Softer but less brittle Stronger and more corrosion resistant Softer and more brittle Exactly the same in terms of physical properties

16. Wrong Answer!

17. Question 8 Aluminium is very resistant to corrosion because it… Has an oxide layer, which protects the metal Is a very unreactive metal Is above iron in the reactivity series Is shiny and lightweight

18. Wrong Answer!

19. Question 9 By which process is aluminium extracted from aluminium oxide on an industrial scale? Reduction with carbon or a carbon compound Evaporation ElectrolysisFiltration

20. Wrong Answer!

21. Question 10 Which of the following is classed as a smart alloy? Stainless SteelNitinol BrassGold

22. Wrong Answer!

23. Congratulations!