Balancing Combustion Reactions

Dr. B guides viewers through balancing a chemical equation, starting with carbon and hydrogen atoms, and finishing with oxygen atoms. The tutorial emphasizes the importance of balancing oxygen last in combustion reactions to ensure accuracy. The process involves adjusting coefficients to achieve equal numbers of each type of atom on both sides of the equation.

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

• 1

• 3

• 5

• 7

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

• 6

• 2

• 12

• 4

What coefficient is placed in front of carbon dioxide to balance the carbon atoms?

• 3

• 4

• 5

• 2

How many water molecules are needed to balance the hydrogen atoms?

• 5

• 4

• 6

• 7

What is the total number of oxygen atoms on the product side after balancing carbon and hydrogen?

• 10

• 12

• 16

• 14

What coefficient is used in front of the oxygen molecule to balance the equation?

• 6

• 7

• 8

• 9

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

• 14

• 18

• 12

• 16

What is the best strategy for balancing combustion reactions according to Dr. B?

• Balance oxygen first

• Balance carbon first

• Balance oxygen last

• Balance hydrogen first