Chemical Reactions Review

The compound with a pink square is known as a ___.

• Reactant

• Product

In order for this equation to be balanced, what number must be written as a coefficient for the substance in the blue box?

• 1

• 2

• 4

• 0

Which type of reaction is shown?

• Combustion

• single replacement

• double replacement

• decomposition

What must be done to this equation for it to be balanced?

• change the subscript to 3 in the reactants

• change the subscript to 3 in the products

• no change; it's balanced as is

• change the coefficients to 2

What type of reaction is shown?

• Decomposition

• Single replacement

• Combustion

• Combination (or Synthesis)

To balance this equation, what coefficient belongs in the red box?

• 3

• 2

• 1

• 0

What type of reaction is this?

• Combination (or Synthesis)

• Single replacement

• Double replacement

• Decomposition

Which type of reaction is shown?

• Combustion

• Combination (or Synthesis)

• Decomposition

• Double replacement

Which type of chemical reaction involves the production of a single complex compound from several simpler reactants?

• Decomposition

• Combustion

• Combination (or Synthesis)

• Single replacement

What are the products of a combustion reaction?

• a single complex compound

• several simpler elements

• carbon dioxide and water

• carbon dioxide and hydrogen