Question

Give 2 examples of each

combination reactions
decomposition reactions
endothermic reactions
exothermic reactions

Answer 1

Combination

1. H² + 0² = 2H²0
2. Ca + 0² = 2Ca0

Decomposition is just opposite if combination .

Endothermic reaction

1. Melting of Ice
2. Photosynthesis

Exothermic reaction

1. Na + H²0 = NaOH + H²
2. K + H²0 = KOH+ H²

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Answer 2

Your answer refer to this attachment..