7.4 Reaction Rates Interactive Guide - Lower Cape May Regional ...

Name Class DateSection 4 ReviewSection Vocabularycatalyst a substance that changes the rate of achemical reaction without being consumed orchanged significantlychemical equilibrium a state of balance inwhich the rate of the forward reaction equalsthe rate of the reverse reaction and the concentrationsof products and reactants remainunchangedenzyme a molecule, either protein or RNA, thatacts as a catalyst in biochemical reactionssubstrate the reactant in reactions catalyzed byenzymes1. List Identify five factors that may affect the rate of a chemical reaction.2. Explain If you add a piece of potato to hydrogen peroxide, tiny gas bubbles willform. However, if you crush the piece of potato first, more gas bubbles will form.Explain these observations.3. Compare What is the relationship between a catalyst and an inhibitor?4. Predict How will an increase in pressure affect the following chemical equilibrium:2NOCl (gas) ⇆ 2NO (gas) + Cl 2(gas)? Explain your answer.5. Evaluate Assumptions A person tells you that a reaction must have stoppedbecause the amounts of products and reactants have not changed. What is wrongwith the person’s reasoning?Copyright © by Holt, Rinehart and Winston. All rights reserved.Interactive Reader 160 Chemical Reactions