Balancing Chemical Equations Concepts

The video tutorial explains how to balance a simple chemical equation: Fe + H2O yields FeO + H2. It emphasizes the importance of counting atoms on each side of the equation and highlights that only coefficients can be changed, not subscripts. The tutorial demonstrates that the given equation is already balanced, with equal numbers of each type of atom on both sides, thus adhering to the law of conservation of mass. The video concludes by explaining that the coefficients for the balanced equation are all 1s.

What is the primary rule to follow when balancing chemical equations?

• Add new elements to balance the equation.

• Change the subscripts of the molecules.

• Remove elements from the equation.

• Only adjust the coefficients in front of molecules.

How many hydrogen atoms are present on each side of the equation Fe + H2O yields FeO + H2?

• Four hydrogen atoms on each side.

• One hydrogen atom on each side.

• Three hydrogen atoms on each side.

• Two hydrogen atoms on each side.

What does it mean when an equation is balanced?

• The number of atoms for each element is the same on both sides.

• The equation has an equal number of molecules on both sides.

• The equation has more atoms on the left side.

• The equation has more atoms on the right side.

What are the coefficients in the balanced equation Fe + H2O yields FeO + H2?

• 2, 2, 2, 2

• 1, 2, 1, 2

• 2, 1, 2, 1

• 1, 1, 1, 1

Which scientific law is demonstrated by a balanced chemical equation?

• Law of Conservation of Energy

• Law of Definite Proportions

• Law of Conservation of Mass

• Law of Multiple Proportions

If asked to report the coefficients of the balanced equation, what would you say?

• 2, 1, 2, 1

• 1, 2, 1, 2

• 2, 2, 2, 2

• 1, 1, 1, 1