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- 1. Multiple Choice
Hematite is a natural compund found in the Earth’s crust. What are the elements that formed the hematite?
Iron and sulphur
Stanum and oxygen
Iron and oxygen
Silicon and oxygen
- 2. Multiple Choice
Calcium carbonate is a natural compound that consists of a combination of several elements. Which elements combine in calcium carbonate?
Calcium
Carbon
Oxygen
Hydrogen
- 3. Multiple Choice
What are P and Q?
P: acid, Q: carbon dioxide
P: alkali Q: carbon dioxide
P: acid, Q: hydrogen
P: alkali, Q: hydrogen
- 4. Multiple Choice
X: lead, Y: copper
X: lead, Y: iron
X: zinc, Y: copper
- 5. Multiple Choice
Mineral X is an element
Mineral X is a compound
Mineral X is a mixture of metal and carbonate
Mineral X does not decompose when heated
- 6. Multiple Choice
Which of the following metals can be extracted through electrolysis of molten ores?
Tin
Magnesium
Zinc
Copper
- 7. Multiple Choice
Choose the elements
Iron
Quartz
Bauxite
Silver
- 8. Multiple Choice
The number of minerals in Earth’s crust is the same as the number of elements.
TRUE
FALSE
- 9. Multiple Choice
Aluminium ore is a mineral compound in Earth’s crust.
TRUE
FALSE
- 10. Multiple Choice
Calcium oxide that is used to reduce the acidity of soil is basic
TRUE
FALSE
- 11. Multiple Choice
Carbon is used to form metal ores
TRUE
FALSE
- 12. Multiple Choice
Gold and diamond are
Elements
Compounds
Mixtures
- 13. Multiple Choice
Which is the scintific name for bauxite?
Iron (III) oxide
Aluminium oxide
Plumbum (II) sulphide
- 14. Multiple Choice
Which elements combine to form hematite?
Iron
Lead/Plumbum
Oxygen
Sulphur
- 15. Multiple Choice
Metals that are more reactive than carbon in the reactivity series of metals are extracted from their ores by using carbon.
True
False
- 16. Multiple Choice
Lead/Plumbum can be extracted from its ore bt using the same method as extraction of iron ore.
True
False
- 17. Multiple Choice
Which of the minerals are blasted/crushed during the early process of iron ore extraction?
Charcoal/coke
Limestone
Talc
Mica
- 18. Multiple Choice
Magnesium + ________ ——> magnesium oxide
Oxygen
Hydrogen
Carbon dioxide
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