Balancing Chemical Equations with Algebraic Methods

What method is introduced for balancing chemical equations?

• Visual Inspection

• Algebraic Method

• Trial and Error

• Conservation of Mass

What is the first step in the algebraic method for balancing equations?

• Solve for variables

• Assign variables to each molecule

• Balance oxygen atoms first

• Identify the reactants and products

How many aluminum atoms are in the molecule AL?

• 4

• 3

• 2

• 1

What variable is initially set to one to begin solving the equations?

• A

• B

• D

• C

After solving, what is the value of C?

• 2

• 3/4

• 1/2

• 1

What is the final value of B after adjusting for fractions?

• 1

• 4

• 3

• 2

What is the greatest common denominator used to adjust the fractions?

• 2

• 3

• 4

• 6

How many aluminum atoms are on each side of the balanced equation?

• 4

• 2

• 3

• 6

How many oxygen atoms are present on each side of the balanced equation?

• 2

• 3

• 6

• 4

What is the final balanced chemical equation?

• 4AL + 3O2 -> AL2O3

• AL + O2 -> AL2O3

• 2AL + 3O2 -> 2AL2O3

• 4AL + 3O2 -> 2AL2O3