How Catalysts Work

The video discusses the reduction of car pollution through catalytic converters, which use platinum and rhodium to speed up chemical reactions, reducing harmful emissions. It explains the types of catalysts, their role in lowering activation energy, and their applications in agriculture and biology. Enzymes, as biological catalysts, are crucial for speeding up processes like digestion.

What is the primary function of a catalytic converter in cars?

• To enhance engine performance

• To reduce noise pollution

• To increase fuel efficiency

• To speed up chemical reactions in exhaust emissions

Which of the following best describes a heterogeneous catalyst?

• It changes during the reaction

• It is in a different phase than the reactants

• It is in the same phase as the reactants

• It is a liquid catalyst

How do catalysts affect the activation energy of a reaction?

• They increase the activation energy

• They decrease the activation energy

• They have no effect on activation energy

• They eliminate the need for activation energy

What role does iron play in the production of ammonia fertilizer?

• It is a byproduct of the reaction

• It serves as a catalyst

• It is used to cool the reaction

• It acts as a reactant

Which enzyme is responsible for breaking down starch into maltose during digestion?

• Cellulase

• Amylase

• Protease

• Lipase