2. Reactivity of metal towards oxygen increases when going down the reactivity series of metal diagram.

4. The most reactive metal in the reactivity series of metals is ______________.

4. In a vigorous reaction between a more reactive metal such as magnesium and oxygen, a bright flame is observed

5. In a less vigorous reaction between a less reactive metal such as iron and oxygen, only a glow or slow change in colour is observed

6. Choose the correct sequence.

7. Magnesium + oxygen = X

What is X ?

8. What are the two non-metal elements that are included in the reactivity series of metals? (Hint: Choose more than one answer).

9. If carbon can remove oxygen from a metal oxide, it means carbon is (more or less) reactive than the metal.

10. What is the common name of ferum oxide ?

11. This chemical compound has a scientific name of silicon dioxide. It contains silicon and oxygen elements. What is the common name of this chemical name described.

12. Taiping is known for century old tin-mining town. A lot tin ore extracted at this heritage town many years ago. What is the common name of tin ore?

13. What is the scientific name of gold?

14. Which of the following is NOT a element exist independently in the Earth's crust?

15. Which of the following minerals is made up of element?

16. Quartz is a combination from several elements. What are those elements?

17. What is the common name for Aluminium oxide ?

18. Calcium carbonate is a combination of:

19. The following are examples of calcium carbonate, EXCEPT

20. Which metal produces MOST vigorous reaction when reacts with oxygen?