Practical 2P04 by Darryl Hwang(10) Jason Lee (18) Mark Soh (26) Zhu ZeHao (34)

	Magnesium	Iron	Zinc	Copper
Oberservation when metal is added to acid	Air bubbles formed “Pop” sound Heat produced	Air bubbles formed “Pop” sound Heat produced	Air bubbles formed “Pop” sound Heat produced	Nothing changed
Effect of gas on burning splint	Fire went off	Fire went off	Fire went off
Effect on damp RED litmus paper	Remained the same	Remained the same	Remained the same
Effect on damp BLUE litmus paper	Remained the same	Red	Remained the same
Name of Gas formed	Hydrogen	gas
Chemical formula for gas	H2

Conclusion

1. salt and hydrogen gas

2.dilute acid + metal -> salt + hydrogen gas

3. We can use a glowing splint and calcium hydroxide to test for oxygen and carbon dioxide respectively.

4.It is neutral

5.Magnesium, iron, copper, zinc

Exercise

1a. magnesium chloride + hydrogen gas

b. Mg + HCl -> MgCl + H

2a. Iron(II) chloride + hydrogen gas

b. Fe + HCl -> ZnCl + H

3a. Zinc chloride + hydrogen gas

b. Zn + HCl -> ZnCl + H

4a. Magnesium sulfate + Hydrogen gas

b. Mg + H2SO4 -> MgSO4 + 2H

5a. Iron sulfate + hydrogen gas

b. Fe + H2SO4 -> FeSO4 + 2H

6a. Zinc sulfur + hydrogen gas

b. Zn + H2SO4 -> ZnSO4 + 2H

7a. Magnesium nitrate + hydrogen gas

b. Mg + 2H2NO3 -> Mg(NO3)2+4H

8a.Iron nitrate + hydrogen gas

b. Fe+H2NO3-> FeNO3 + 2H

9a.Zinc nitrate + hydrogen gas

b.Zn + H2NO3 -> ZnNO3 + 2H