Uploaded August 2025 | Updated September 2026, 2 weeks ago
Types of Reactions
Dr. DeBacco
Single Replacement (or Displacement) Reaction
A + BC → AC + B
One element replaces another in a compound.
Example: Zn + HCl → ZnCl₂ + H₂
Double Replacement Reaction
AB + CD → AD + CB
Two compounds swap components to form two new compounds.
Often seen in precipitation or neutralization reactions.
Example: Na₂SO₄ + BaCl₂ → BaSO₄↓ + 2NaCl
Combustion Reaction
Hydrocarbon + O₂ → CO₂ + H₂O
A substance burns in oxygen, releasing energy.
Common with fuels like gasoline or natural gas.
Example: CH₄ + 2O₂ → CO₂ + 2H₂O
Synthesis (Combination) Reaction
A + B → AB
Two or more substances combine to form a more complex compound.
Example: 2H₂ + O₂ → 2H₂O
Decomposition Reaction
AB → A + B
A compound breaks apart into simpler substances.
Often triggered by heat or electricity.
Example: 2HgO → 2Hg + O₂
Acid–Base (Neutralization) Reaction
Acid + Base → Salt + Water
A hydrogen ion (H⁺) from the acid reacts with a hydroxide ion (OH⁻) from the base.
Example: HCl + NaOH → NaCl + H₂O
Link to Lecture Slides: drive.google.com/file/d/1jmUGq9lGG_KtCEKGwB4tL1qHahnPRMXy/view?usp=drive_link
*Due to the description character limit the full work cited for "Types of Reactions" can be viewed at... docs.google.com/document/d/1IrREkw4a9g2IAQBm5PGqoptXkIq32jdC/edit?usp=drive_link&ouid=104237452697237972847&rtpof=true&sd=true
Types of Reactions
Dr. DeBacco
Single Replacement (or Displacement) Reaction
A + BC → AC + B
One element replaces another in a compound.
Example: Zn + HCl → ZnCl₂ + H₂
Double Replacement Reaction
AB + CD → AD + CB
Two compounds swap components to form two new compounds.
Often seen in precipitation or neutralization reactions.
Example: Na₂SO₄ + BaCl₂ → BaSO₄↓ + 2NaCl
Combustion Reaction
Hydrocarbon + O₂ → CO₂ + H₂O
A substance burns in oxygen, releasing energy.
Common with fuels like gasoline or natural gas.
Example: CH₄ + 2O₂ → CO₂ + 2H₂O
Synthesis (Combination) Reaction
A + B → AB
Two or more substances combine to form a more complex compound.
Example: 2H₂ + O₂ → 2H₂O
Decomposition Reaction
AB → A + B
A compound breaks apart into simpler substances.
Often triggered by heat or electricity.
Example: 2HgO → 2Hg + O₂
Acid–Base (Neutralization) Reaction
Acid + Base → Salt + Water
A hydrogen ion (H⁺) from the acid reacts with a hydroxide ion (OH⁻) from the base.
Example: HCl + NaOH → NaCl + H₂O
Link to Lecture Slides: drive.google.com/file/d/1jmUGq9lGG_KtCEKGwB4tL1qHahnPRMXy/view?usp=drive_link
*Due to the description character limit the full work cited for "Types of Reactions" can be viewed at... docs.google.com/document/d/1IrREkw4a9g2IAQBm5PGqoptXkIq32jdC/edit?usp=drive_link&ouid=104237452697237972847&rtpof=true&sd=true
