Decomposition Reactions

What type of chemical reaction is this one?

N₂O₅ + H₂O ---> 2HNO₃

• Decomposition

• Combustion

• Synthesis

• Single Replacement

Which of the following is an example of synthesis?

• 2Na + Br₂ → 2NaBr

• KClO₃ → KCl + O₂

• HgO + Cl₂ → HgCl + O₂

• Cl₂ + NaBr → NaCl + Br₂

A decomposition reaction can be represented as _____________________.

• AB  → A + B
• A + B → AB
• AB + CD → AC + BD
• A + BC → B + AC

A chemical change in which a single compound breaks down into two or more simpler products is called a ______________________.

• single-replacement reaction
• synthesis reaction
• double-replacement reaction
• decomposition reaction

This chemical equation below is an example of what type of reaction?

2MgO → 2Mg + O₂

• decomposition reaction

• synthesis reaction

• combustion reaction

• Marvin the Martian reaction

Choose the balanced chemical equation for the formation of iron (III) oxide.

• 2Fe + O₂ → 2FeO₂

• Fe + O₂ → FeO₂

• 4Fe + 3O₂ → 2Fe₂O₃

• 4Fe + O₂ → 2FeO₂

A chemical change in which two or more substances react to form a new substance is a ____________________________.

• decomposition reaction
• synthesis reaction
• double displacement reaction
• combustion reaction

A synthesis reaction can be represented as ________________________.

• AB + CD → AC + BD
• AB → A + B
• A + B → AB
• A + BC → B + AC

This chemical equation for magnesium oxide is an example of what type of reaction?
2Mg + O₂  → 2MgO

• decomposition reaction
• synthesis reaction
• single displacement reaction
• combustion reaction

Which chemical reaction breaks down into 2 substances?

• Double displacement
• Single displacement
• Synthesis
• Decomposition