Balancing Zinc and Oxygen Reactions

The video tutorial explains how to balance a chemical equation involving zinc and oxygen to form zinc oxide. It begins by introducing the reaction and counting the atoms on both sides. The tutorial then demonstrates how to balance the equation by adjusting coefficients, ensuring the number of atoms for each element is equal on both sides. The process is completed by verifying the balance of zinc and oxygen atoms, resulting in a balanced chemical equation.

What type of reaction is zinc plus oxygen gas forming zinc oxide?

• Decomposition reaction

• Combination reaction

• Double displacement reaction

• Single displacement reaction

Why do we need to add a coefficient of 2 in front of zinc oxide?

• To increase the reaction rate

• To balance the oxygen atoms

• To decrease the reaction rate

• To balance the zinc atoms

What happens to the number of zinc atoms when a coefficient of 2 is added to zinc oxide?

• It halves

• It triples

• It doubles

• It remains the same

How do we balance the zinc atoms on the reactant side?

• By adding a coefficient of 2

• By removing a coefficient

• By adding a coefficient of 3

• By adding a coefficient of 4

What is the final balanced equation for the reaction of zinc and oxygen?

• Zn + O2 → ZnO

• 2Zn + 2O2 → 2ZnO2

• Zn + 2O2 → ZnO2

• 2Zn + O2 → 2ZnO