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- 1. Multiple ChoiceGrinding a seltzer tablet into powder increases the rate of reaction due to increasedconcentrationsurface areatemperaturereactants
- 2. Multiple ChoiceIncreasing the concentration increases the speed of reaction bylowering activation energyincreasing collisionsspeeding up the reactantsexposing more reactant
- 3. Multiple ChoiceWhich factors increase the rate of a reaction.increasing temperatureincreasing concentrationincreasing surface areaall of these
- 4. Multiple ChoiceThis slows down or even stops a chemical reaction.de-activatorcatalystenzymeinhibitor
- 5. Multiple ChoiceSome chemical reactions require a substance called a catalyst. The main purpose of a catalyst isTo warm up the reactionTo speed up the reactionTo create more reactantsTo stop the reaction
- 6. Multiple Choice
Why does a catalyst cause the reaction rate to increase?
It lowers the activation energy of the reaction
It increases the amount of reactants
It adds thermal energy to the reaction
- 7. Multiple Choice
Which version of the energy graph shows the reaction with a CATALYST?
Red, because the activation energy is higher
Blue, because the activation energy is lower
- 8. Multiple Choice
Which of the following statements is true about catalysts?
Catalysts slow down the rate of chemical reactions.
All catalysts are enzymes.
Catalysts are used up during a chemical reaction.
Catalysts lower the activation energy of a chemical reaction.
- 9. Multiple Choice
What is the catalyst in this chemical reaction?
CO2
Pt
CO
O2
- Answer choicesTagsAnswer choicesTags