How will you indicate the following effect in a chemical equation?

Exothermic reaction

How will you indicate the following effect in a chemical equation?

Endothermic reaction

Translate the following statement into chemical equations and then balance the equation:

Phosphorus burns in oxygen to give phosphorus pentoxide.

Translate the following statement into chemical equations and then balance the equation:

Carbon disulphide burns in air to give carbon dioxide and sulphur dioxide.

Translate the following statement into chemical equations and then balance the equation:

Aluminium metal replaces iron from ferric oxide, Fe₂O₃ giving aluminium oxide and iron.

Translate the following statement into chemical equations and then balance the equation:

Barium chloride reacts with zinc sulphate to give zinc chloride and barium sulphate.

Write the balanced chemical equations for the following reaction:

Aluminium + copper chloride $\to$Aluminium chloride + copper