free diagnosticupgrade

💏intro to chemistry review

Combustion reactions

Written by the Fiveable Content Team • Last updated August 2025
Written by the Fiveable Content Team • Last updated August 2025

Definition

A combustion reaction involves a substance reacting rapidly with oxygen, typically producing heat and light. These reactions often result in the formation of carbon dioxide and water.

combustion reactions cheat sheet for homework

visual study aid

5 Must Know Facts For Your Next Test

  1. Combustion reactions are exothermic, meaning they release energy as heat.
  2. The general form of a combustion reaction is: hydrocarbon + O\(_2\) → CO\(_2\) + H\(_2\)O.
  3. Complete combustion occurs when there is sufficient oxygen, producing CO\(_2\) and H\(_2\)O.
  4. Incomplete combustion happens with limited oxygen supply, often yielding CO or C (soot) along with H\(_2\)O.
  5. Balancing combustion reactions requires ensuring that the number of atoms for each element is equal on both sides of the equation.

Review Questions

"Combustion reactions" also found in:

2,589 studying →