Balancing Chemical Equations

The video tutorial explains how to balance a chemical equation involving zinc and water to form zinc hydroxide and hydrogen gas. It begins by counting the atoms on both sides of the equation, identifying the imbalance in hydrogen and oxygen atoms. The tutorial then demonstrates how to balance these atoms by adjusting coefficients, ensuring the equation is balanced. The process is explained step-by-step, with a focus on understanding the application of coefficients to achieve balance.

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

• Three

• One

• Four

• Two

How many hydrogen atoms are present on the product side before balancing?

• Two

• Three

• Five

• Four

What coefficient is added in front of H2O to balance the hydrogen atoms?

• 1

• 2

• 4

• 3

After balancing, how many oxygen atoms are there on each side of the equation?

• One

• Two

• Three

• Four

What is the final balanced chemical equation for the reaction between zinc and water?

• Zn + 2H2O → Zn(OH)2 + 2H2

• Zn + 2H2O → Zn(OH)2 + H2

• 2Zn + H2O → Zn(OH)2 + H2

• Zn + H2O → Zn(OH)2 + H2