Reversible Reactions

Mr. Anderson explains reversible reactions, contrasting them with irreversible ones. He discusses Claude Berthollet's discovery and uses models and analogies to illustrate the concept. Examples from chemistry, biology, and the environment highlight the importance of reversible reactions, such as evaporation, smell, and the carbon cycle.

Who first identified reversible reactions?

• Dmitri Mendeleev

• Claude Berthollet

• Antoine Lavoisier

• Marie Curie

What happens at equilibrium in a reversible reaction?

• The amounts of reactants and products remain constant

• Products stop converting to reactants

• The reaction stops completely

• Reactants stop converting to products

Which of the following is an example of a physical reversible reaction?

• Burning wood

• Evaporation and condensation of water

• Rusting of iron

• Cooking an egg

In the dance analogy, what do the partners represent?

• Equilibrium

• Products

• Catalysts

• Reactants

What is formed when nitrogen dioxide undergoes a reversible reaction?

• Ammonia

• Dinitrogen tetroxide

• Nitrogen monoxide

• Nitric acid

How do olfactory neurons contribute to the sense of smell?

• They convert molecules into electrical signals

• They store molecules for future recognition

• They temporarily bind to molecules and release them

• They permanently bind to molecules

What process releases carbon from the soil into the atmosphere?

• Decomposition

• Photosynthesis

• Respiration

• Combustion