What are 5 examples of chemical changes?

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Answer 1 · 2017-01-22T08:34:27

Five classes of chemical changes are single replacements, double replacements, synthesis, decomposition and Oxidation.

An example of Decomposition would be the breakdown of #H_2CO_3#

# H_2CO_3 = H_2O + CO_2#

An example of synthesis would be the formation of water

# 2 H_2 + O_2 == 2 H_2O#

An example of a single replacement would be

# 2 HBr + Cl_2 = 2 HCl + Br_2#

An example of a double replacement would be

# HCl + NaOH = H_2O + NaCl #

An example of an oxidation (combustion) reaction would be

# C_2H_6 + 5O_2= 2CO_2 + 6 H_2O#