Match the following chemical reactions:

synthesis, reversible, exchange, decomposition

1. molecules rearrange and form new molecules

2. simultaneous decomposition and synthesis

3. bonds broken and elements released

4. molecules formed from components

Synthesis - 4

reversible - 2

exchange - 1

decomposition-3

Explanation:

In synthesis reaction two or more components combines to form a single product. example 2H2+O2⇒2H2O

In reversible reaction two reactants combine to form two products. The products then reacts and forms back the reactants. example N2 + 3H2 ⇒2NH3

In exchange reaction there is an alternation of ions of reactants to form new products. AB+CD ⇒AC + BD

In decomposition reaction, molecules of a compound break down by the action of heat or light or catalyst. example CaCO3 ⇒CaO + CO2