Chemical Reactions Quiz

What is the process of writing a chemical equation to represent a chemical reaction called?

• Chemical transformation

• Chemical decomposition

• Chemical synthesis

• Balancing the equation

What is the purpose of balancing a chemical equation?

• To make the equation look more balanced.

• To make the equation easier to read.

• To ensure the law of conservation of mass is obeyed.

• To satisfy the law of conservation of energy.

Which subtopic deals with the classification of chemical reactions?

• Chemical Reaction Equations

• Chemical Reaction Types

• Chemical Reaction Mechanisms

• Chemical Reaction Rates

What is the term used to describe the quantitative relationship between reactants and products in a chemical reaction?

• catalyst

• stoichiometry

• activation energy

• equilibrium

What is the term used to describe the amount of product obtained in a chemical reaction?

• yield

• density

• volume

• concentration

Name the five main types of chemical reactions.

• synthesis, decomposition, single displacement, double displacement, and combustion

• oxidation, reduction, precipitation, neutralization, and polymerization.

• acid-base, redox, precipitation, complexation, and isomerization.

• substitution, elimination, addition, rearrangement, and isomerization.

How is reaction stoichiometry calculated?

• By determining the rate of the reaction.

• By calculating the molar mass of the reactants.

• By using the ideal gas law.

• By balancing the chemical equation.

What factors can affect the yield of a chemical reaction?

• Time, volume of reactants, pH level, and stirring rate.

• Type of solvent, size of reactants, presence of inhibitors, and stirring speed.

• Temperature, concentration of reactants, pressure, catalysts, and impurities

• Color of reactants, humidity, presence of light, and size of reaction vessel.

What is the formula to calculate reaction yield?

• (actual yield - theoretical yield) x 100%

• (actual yield / theoretical yield) x 100%

• (theoretical yield / actual yield) x 100%

• (actual yield + theoretical yield) x 100%

What are the reactants in the chemical equation pictured?

• CH₄ and CO₂
• CH₄ and O₂
• CO₂ and H₂O
• O₂ and H₂O