B) Sodium + Oxygen Sodium Oxide + Type of Reaction : c) Barium Chloride + Potassium iodide Barium lodide + Potassium Chloride Type of Reaction :

e) NH 3 +HCl NH 4 Cl Type of Reaction ;

f) CuO+H 2 Cu+H 2
O Type of Reaction

g) CaOH CaO 2 +H 2 O Type of Reaction

b. combustion reaction

c. displacement reaction

e. Decomposition reaction

f. redox reactions

g. combination reaction

I'm not fully sure about part c but the rest are correct

I hope it helped

the role of the microscope world in creating new materials .

1.solid

2.carbon dioxide

3.helium