Classifying Chemical Reactions: Practice Problems

The video tutorial covers the classification of chemical reactions, including single replacement, combustion, decomposition, synthesis, and double replacement reactions. It provides examples for each type, explaining the rearrangement of elements and compounds. The tutorial emphasizes understanding the reactions without focusing on balancing equations, preparing students for exams by learning sample equations.

What type of reaction occurs when one element replaces another in a compound?

• Single replacement reaction

• Synthesis reaction

• Decomposition reaction

• Combustion reaction

What is produced when a hydrocarbon combusts in the presence of oxygen?

• Oxygen and hydrogen

• Hydrogen gas and carbon

• Water and carbon dioxide

• Carbon monoxide and water

What type of reaction is characterized by a compound breaking down into simpler substances?

• Double replacement reaction

• Decomposition reaction

• Combustion reaction

• Synthesis reaction

Which reaction type involves elements or compounds combining to form a more complex substance?

• Decomposition reaction

• Combustion reaction

• Double replacement reaction

• Synthesis reaction

In a synthesis reaction, what happens to the reactants?

• They replace each other in a compound

• They decompose into simpler substances

• They combine to form a more complex compound

• They combust to form water and carbon dioxide

What occurs in a double replacement reaction?

• Elements combine to form a complex compound

• A single element replaces another in a compound

• Two compounds switch partners

• A compound breaks down into simpler substances

During a decomposition reaction, what is NOT necessarily produced?

• A complex compound

• Simpler compounds

• The original elements

• A single element

What is the result when zinc reacts with hydrochloric acid?

• Zinc chloride and hydrogen gas

• Zinc hydroxide and chlorine gas

• Hydrogen chloride and zinc

• Zinc carbonate and hydrogen

In the reaction between sodium chloride and sulfuric acid, what type of reaction is demonstrated?

• Combustion reaction

• Decomposition reaction

• Single replacement reaction

• Double replacement reaction

What is a characteristic outcome of a combustion reaction?

• Formation of a single element

• Production of water and carbon dioxide

• Switching of elements between compounds

• Breakdown into simpler compounds