The video tutorial explains the decomposition reaction of MgCO3 into MgO and CO2. It demonstrates how to balance the chemical equation by counting the atoms on both sides, ensuring the equation is balanced. The tutorial also addresses common mistakes, such as forgetting to count all oxygen atoms. Dr. B concludes the lesson by reiterating the importance of accurate atom counting.

What type of reaction is MgCO3 breaking down into MgO and CO2?

• Synthesis Reaction

• Decomposition Reaction

• Single Replacement Reaction

• Double Replacement Reaction

In a decomposition reaction, what happens to the original compound?

• It forms a new element.

• It breaks down into simpler substances.

• It remains unchanged.

• It combines with another compound.

How many oxygen atoms are present on the reactant side of the equation MgCO3?

• One

• Two

• Three

• Four

What is a common mistake when balancing the equation for the decomposition of MgCO3?

• Ignoring the product side

• Counting too many magnesium atoms

• Forgetting to count all oxygen atoms

• Adding extra carbon atoms

What is the final status of the equation for the decomposition of MgCO3?

• It needs more products.

• It needs more reactants.

• It is balanced.

• It is unbalanced.