Chemical Reactions and Zinc Carbonate

The video tutorial explains how to balance the chemical equation for the decomposition of zinc carbonate (ZnCO3) into zinc oxide (ZnO) and carbon dioxide (CO2). It begins by identifying the decomposition process, then guides through counting atoms on both sides of the equation to ensure they are equal, and concludes with confirming the balanced equation.

What is the chemical formula for zinc carbonate?

• Zn

• ZnO

• ZnCO3

• CO2

What type of chemical reaction is the decomposition of zinc carbonate?

• Double replacement

• Decomposition

• Single replacement

• Synthesis

Which compound is formed along with zinc oxide in the decomposition of zinc carbonate?

• Water

• Carbon dioxide

• Carbon monoxide

• Oxygen

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

• One

• Three

• Four

• Two

What is the balanced chemical equation for the decomposition of zinc carbonate?

• ZnCO3 → ZnO + O2

• ZnCO3 → ZnO + C

• ZnCO3 → ZnO + CO2

• ZnCO3 → Zn + CO2