2
QuizMultiple Choice
Rate of Chemical Reactions
Question 2 of 10 • Roy Summer School 26: Physical Science
The typical speed of a reaction releases gas every twenty seconds for two minutes. The chart lists four substances that were added to the reaction at different times. Which statement best summarizes the chart?
Answer
A
Substances W and Y are catalysts, and substances X and Z are inhibitors.B
Substance W is an inhibitor, and substances X, Y, and Z are catalysts.C
Substances W and Z are inhibitors, and substances X and Y are catalysts.D
Substance X is a catalyst, and substances W, Y, and Z are inhibitors.