Balancing Chemical Equations Concepts

The video tutorial explains how to balance the chemical equation for tungsten(VI) oxide (WO3) reacting with hydrogen gas (H2). It begins by counting the atoms in the reactants and products, identifying the need to balance oxygen atoms first. By adjusting coefficients, the tutorial demonstrates balancing both oxygen and hydrogen atoms, resulting in a balanced chemical equation. The video also discusses the states of matter for each component in the reaction, concluding with a summary of the balanced equation.

What is the initial number of tungsten atoms in the reactants?

• Two

• Three

• One

• Four

Which element's atoms are balanced first in the equation?

• Oxygen

• Tungsten

• Nitrogen

• Hydrogen

What coefficient is placed in front of H2O to balance the oxygen atoms?

• 3

• 2

• 1

• 4

How many hydrogen atoms are there after balancing the equation?

• 2

• 8

• 4

• 6

What is the state of tungsten(VI) oxide in the balanced equation?

• Aqueous

• Gas

• Solid

• Liquid

What is the state of water in the balanced equation?

• Solid

• Liquid

• Gas

• Plasma

What is the role of hydrogen gas in the reaction?

• It is a reactant.

• It is a catalyst.

• It is an inhibitor.

• It is a product.