Balancing Magnesium and Oxygen Reactions

The video tutorial explains how to balance a chemical equation involving magnesium and oxygen to form magnesium oxide. It begins by counting the atoms on each side of the equation, identifying the imbalance, and then using coefficients to balance the oxygen atoms first, followed by the magnesium atoms. The tutorial concludes with the final balanced equation: Mg + O2 yields MgO.

What is the initial number of magnesium atoms on the reactant side of the equation?

• One

• Two

• Three

• Four

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

• Four

• Three

• Two

• One

What coefficient is added in front of MgO to balance the oxygen atoms?

• 1

• 2

• 3

• 4

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

• One

• Two

• Three

• Four

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

• 1

• 2

• 3

• 4

What is the final balanced equation for the reaction between magnesium and oxygen?

• 2Mg + 2O2 → 2MgO2

• Mg + 2O2 → MgO2

• Mg + O2 → MgO

• 2Mg + O2 → 2MgO