Balance the following equations. 2 Mg + O2 --> 2 MgO
2 KClO3 --> 2 KCl + 3 O2
2 Al +Fe2O3--> 2 Fe +Al2O3
SiCl4 + 2 H2O--> SiO2 + 4 HCl
C6H12O6 + 6 O2--> 6 CO2 + 6 H2O

blue light is scattered in different directions by the tiny molecules of air. blue is scattered more than other colours because it has a shorter distance to travel which results in smaller waves. this is why we see a blue sky most of the time.