Redox Processes Quiz

What is oxidation?

• Gain of electrons by a substance.

• The process of converting a substance into a different chemical compound.

• The process of reducing a substance.

• Loss of electrons by a substance

What is reduction?

• Reduction is the process of simplifying a problem or system to a more basic or manageable form.

• Reduction is the process of making a problem more complex.

• Reduction is the process of adding unnecessary steps to a system.

• Reduction is the process of making a problem more difficult to solve.

Define half-reactions.

• Two parts of a redox reaction that show the oxidation and reduction processes separately.

• Two parts of a chemical reaction that show the reactants and products separately.

• Two parts of a reaction that show the exothermic and endothermic processes separately.

• Two parts of a reaction that show the reactants and catalysts separately.

What are oxidizing agents?

• Substances that cause other substances to undergo reduction by accepting electrons from them.

• Substances that cause other substances to undergo oxidation by donating electrons to them.

• Substances that cause other substances to undergo reduction by donating electrons to them.

• Substances that cause other substances to undergo oxidation by accepting electrons from them.

What are reducing agents?

• Substances that absorb light and cause reduction of another substance.

• Substances that donate electrons and cause reduction of another substance.

• Substances that release protons and cause reduction of another substance.

• Substances that accept electrons and cause reduction of another substance.

Which process involves the loss of electrons?

• combustion

• reduction

• ionization

• oxidation

Which process involves the gain of electrons?

• reduction

• condensation

• evaporation

• oxidation

What is the purpose of balancing redox reactions?

• To increase the reaction rate.

• To maintain the law of conservation of mass and charge.

• To change the color of the solution.

• To make the reaction more visible.

Give an example of an oxidizing agent.

• sodium chloride

• chlorine gas

• hydrogen peroxide

• water

Give an example of a reducing agent.

• Carbon dioxide

• Oxygen

• Hydrogen

• Water