Balancing Chemical Reactions and Equations

The video tutorial explains how to balance a chemical equation involving magnesium and iron(III) oxide. It begins by introducing the reaction and counting the atoms on each side. The tutorial then focuses on balancing the oxygen atoms by adjusting the coefficients of magnesium oxide. Once the oxygens are balanced, the tutorial proceeds to balance the magnesium and iron atoms. The video concludes with the final balanced equation and a brief closing remark.

What type of reaction is represented by the equation involving magnesium and iron(III) oxide?

• Synthesis

• Single displacement

• Decomposition

• Double displacement

How many oxygen atoms are present on the reactant side before balancing?

• Two

• Three

• Four

• One

What coefficient is placed in front of magnesium oxide to balance the oxygen atoms?

• 1

• 2

• 4

• 3

After balancing the oxygen atoms, how many magnesium atoms are needed on the reactant side?

• Three

• Two

• One

• Four

What coefficient is used in front of iron to balance the equation?

• 3

• 4

• 2

• 1

What is the final balanced equation for the reaction between magnesium and iron(III) oxide?

• 2Mg + Fe2O3 → 2MgO + 2Fe

• 3Mg + Fe2O3 → 3MgO + 2Fe

• Mg + Fe2O3 → MgO + Fe

• Mg + FeO → MgO + Fe