Grade 10 Chapter 6/7 Chemistry Review (Ontario)

The reaction AB + XY ⟶ XB + AY is an example of ______.

• synthesis

• decomposition

• single replacement

• double replacement

_Al + _HCl →_H₂ + _AlCl₃

• 2 Al + 2 HCl → 2 H₂ + 6 AlCl₃
• 3 Al + 3 HCl → 6 H₂ + 2 AlCl₃
• 1 Al + 1 HCl → 3 H₂ + 1 AlCl₃
• 2 Al + 6 HCl → 3 H₂ + 2 AlCl₃

Tags

NGSS.HS-PS1-7

What class of reaction best describes the equation below?

MgCO₃ ⟶ MgO + CO₂

• Synthesis

• Decomposition

• Single Replacement

• Double Replacement

• Combustion

The reaction AB + X ⟶ XB + A is classified as a _____ reaction.

• synthesis

• decomposition

• single replacement

• double replacement

_BaS + _PtF₂ → _BaF₂ + _PtS

• 1 BaS + 1 PtF₂ → 1 BaF₂ + 1 PtS
• 4 BaS + 2 PtF₂ → 1 BaF₂ +  1 PtS
• 1 BaS + 2 PtF₂→ 2 BaF₂ +  2 PtS
• 1 BaS + 3 PtF₂ →1 BaF₂ +  2 PtS

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-7

Identify the following chemical reaction.

Pb + FeSO₄ ----> PbSO₄ + Fe

• Synthesis (or combination)

• Decomposition

• Single replacement

• Double replacement

Which of the following is an example of a decomposition reaction?

• 2NaF ⟶ 2 Na + F₂

• P₂O₅ + 3 H₂O ⟶ 2H₃PO₄

• 2FeCl₃ + 3Zn ⟶ 2Fe + 3ZnCl₂

• C₆H₁₂O₆ + 6O₂ ⟶ 6CO₂ + 6 H₂O

Which chemical reaction always starts with a hydrocarbon that reacts with oxygen and produces carbon dioxide and water?

• Decomposition

• Synthesis

• Combustion

• Single Replacement

What class of reaction best describes the equation below?

Zn + H₂S ⟶ ZnS + H₂

• synthesis

• combustion

• single replacement

• double replacement

Balance this equation,            Al₂O₃ ---> Al + O₂ 

• Cannot be balanced
• 2Al₂O₃ ---> 2Al + 3O₂ 
• 2Al₂O₃ ---> 4Al + 3O₂ 
• 3Al₂O₃ ---> 2Al + O₂ 

Tags

NGSS.HS-PS1-7