Decomposition Reactions

Choose the general equation for decomposition reaction:

• A + B → A - B

• A - B → AB

• None of the above

• AB → A + B

Which of the following chemical equation represents a decomposition reaction?

• H2SO3 → H2O + SO2

• 2K + 2H2O → 2KOH + H2

• None of the above

• Two of the above

The reaction 2AI₂O₃ → 4AI + 3O₂ is a decomposition reaction.

• True

• False

Hydrogen peroxide gradually decomposes to and when it is exposed to light.

• water; oxygen

• hydrogen; oxygen

• hydrogen; oxygen

• All of the above

Tags

NGSS.MS-PS1-5

Which type of reaction is shown?

• Combustion

• single replacement

• double replacement

• decomposition

What type of reaction involves the breaking down of a substance into simpler substances?

• Single Displacement Reaction

• Double Displacement Reaction

• Synthesis Reaction

• Decomposition Reaction

Tags

NGSS.MS-PS1-2

Identify the type of chemical reaction

• Synthesis

• Decomposition

• Single replacement

• Double replacement

• Combustion

Tags

NGSS.MS-PS1-2

How do you know this is a decomposition reaction?

Tags

NGSS.MS-PS1-2

What type of reaction is illustrated below? 2HI --> H₂ + I₂

• synthesis

• decomposition

• single replacement

• double replacement

Tags

NGSS.MS-PS1-2

Decomposition reaction is the opposite of a reaction

• Synthesis

• Photosynthesis

• Combustion

• Double-replacement