Balancing Chemical Equations

The video tutorial explains how to balance the chemical equation Zn + O2 yields ZnO. It begins by identifying the imbalance in oxygen atoms and adjusts the coefficient of ZnO to balance them. Next, it addresses the imbalance in zinc atoms by adjusting the coefficient of Zn. The tutorial concludes by confirming that the equation is balanced, with equal numbers of each type of atom on both sides.

What is the initial step in balancing the equation Zn + O2 → ZnO?

• Change the chemical formula.

• Remove oxygen atoms.

• Add coefficients randomly.

• Count the atoms on both sides of the equation.

How can we balance the oxygen atoms in the equation Zn + O2 → ZnO?

• Add a coefficient of 2 in front of Zn.

• Remove one oxygen atom.

• Place a 2 in front of ZnO.

• Add a coefficient of 3 in front of ZnO.

What happens to the zinc atoms after balancing the oxygen atoms?

• They become unbalanced.

• They remain balanced.

• They double in number.

• They disappear.

What is the final step to balance the zinc atoms in the equation?

• Add a coefficient of 3 in front of Zn.

• Place a coefficient of 2 in front of Zn.

• Remove one zinc atom.

• Add a coefficient of 2 in front of O2.

What is the balanced equation for Zn + O2 → ZnO?

• 2Zn + O2 → 2ZnO

• Zn + O2 → ZnO

• 2Zn + 2O2 → ZnO

• Zn + 2O2 → ZnO2