Burn a magnesium ribbon using a spirit lamp and observe the changes.

(i) Was it a combination reaction?

(ii) Is oxidation or reduction taking place?

(iii) Is it exothermic?

Identify which substance is getting oxidized and which substance is being reduced in the following reaction.

$\mathrm{CuO}+{\mathrm{H}}_2\to \mathrm{Cu}+{\mathrm{H}}_2\mathrm{O}$

$2\mathrm{PbO}\left(\mathrm{s}\right)+\mathrm{C}\left(\mathrm{s}\right)\to 2\mathrm{Pb}\left(\mathrm{s}\right)+{\mathrm{CO}}_2\left(\mathrm{g}\right)$ Which statement is true about this reaction?

1) Lead is undergoing oxidation

2) Carbon dioxide is undergoing oxidation 

3) Carbon is getting oxidized to carbon dioxide 

4) Lead oxide is being reduced to lead