Chemistry Reactions and Balancing Quiz

Identifying Reactions

• Reactions can be classified as synthesis, decomposition, single displacement, double displacement, complete hydrocarbon combustion, or combustion of an element.
• Synthesis reactions combine two reactants to form a single product.
• Decomposition reactions break down a single reactant into two or more products.
• Single displacement reactions involve one element replacing another in a compound.
• Double displacement reactions involve the exchange of ions between two reactants.
• Complete hydrocarbon combustion reactions occur when a hydrocarbon reacts with oxygen, producing carbon dioxide, water, and energy.
• Combustion of an element reactions involve an element reacting with oxygen to produce an oxide and energy.

Balancing Chemical Equations

• Balancing chemical equations ensures that the number of atoms of each element on the reactant side equals the number of atoms of that element on the product side.
• This follows the law of conservation of mass, which states that matter cannot be created or destroyed.

Example Reactions

• Iron reacting with oxygen to form iron oxide is an example of a synthesis reaction.
• Iron sulfide reacting with hydrochloric acid to produce iron chloride and hydrogen sulfide is an example of a single displacement reaction.
• Silver nitrate reacting with hydrochloric acid to produce silver chloride and nitric acid is an example of a double displacement reaction.
• Aluminum chloride decomposing into aluminum and chlorine is an example of a decomposition reaction.
• Aluminum reacting with sulfuric acid to produce aluminum sulfate and hydrogen is an example of a single displacement reaction.
• Potassium chlorate decomposing into potassium chloride and oxygen is an example of a decomposition reaction.
• Propane reacting with oxygen to produce carbon dioxide, water, and energy is an example of a complete hydrocarbon combustion reaction.
• Hydrogen gas reacting with oxygen gas to produce water and energy is an example of a combustion reaction.