Question

what energy can be used for a decomposition reaction to take place?
select all that apply
a electricity
b heat
c mental
d light

Explanation:

Decomposition reactions can be initiated by different forms of energy.

• Electricity: For example, electrolysis of water ($2H_2O\xrightarrow{electricity}2H_2 + O_2$) is a decomposition reaction driven by electrical energy.
• Heat: Thermal decomposition reactions like $CaCO_3\xrightarrow{heat}CaO + CO_2$ are common, where heat provides the energy for the compound to break down.
• Light: Photochemical decomposition reactions, such as the decomposition of silver chloride ($2AgCl\xrightarrow{light}2Ag+Cl_2$) occur when light energy is absorbed by the reactant.

Mental energy is not a form of energy that can drive a chemical (decomposition) reaction.

Answer:

A. Electricity, B. Heat, D. Light