Give an example of the following double displacement reaction.

When a precipitate is formed.

Give an example of a double displacement reaction when a gas is formed.

What type of reaction is represented by the following equation? (Decomposition/ Combination)

$\mathrm{A} + \mathrm{B} \to \mathrm{AB}$

What type of reaction is represented by the following equation? (Combination/ Decomposition)

$\mathrm{C}\to \mathrm{A}+\mathrm{B}$

What type of reaction is represented by the following equation?

$\mathrm{AL}+\mathrm{X} \to \mathrm{AX}+\mathrm{L}$   (Decomposition / Displacement)  

What type of reaction is represented by the following equation? (Decomposition / Combination / Double Displacement)

$\mathrm{AB}+\mathrm{CD} \to \mathrm{AD}+\mathrm{CB}$

What type of reaction is represented by the given equation?

${\mathrm{Cl}}_2+2\mathrm{KI}\to 2\mathrm{KCl}+{\mathrm{I}}_2$  (Combination/ Displacement)

What type of reaction is represented by the following equation? 

$2\mathrm{Mg}+{\mathrm{O}}_2\to 2\mathrm{MgO}$

(Displacement / Combination)