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- 1. Multiple Choice
Which line shows the reactants with the largest surface area?BA - 2. Multiple ChoiceA substance that increases speed of chemical reaction without being being changed is called:CatalystAcidBasepressure
- 3. Multiple ChoiceActivation energy is required to start a chemical reaction. What is activation energy?The energy needed for a reaction to occurThe minimum amount of energy needed for a reaction to potentially occurThe energy added by a catalystThe energy possessed by the products
- 4. Multiple ChoiceIncrease in temperature of the reactants can do one of the followingSlow collision frequencyAllow less effective collision between the particlesCause particles to lose speedIncrease collision between the particles thus increasing the rate.
- 5. Multiple ChoiceIncreasing the pressure of a reacting vessel only affects:Gaseous reactantsSolid reactantsLiquid reactantsNone of the above
- 6. Multiple ChoiceDecreasing the particle size increases the reaction rate becauseIt makes particles move fasterIt increases the likelihood of collisions with the correct geometryIt decreases the surface area available to reactIt increases the number of collisions
- 7. Multiple ChoiceThis helps to speed up a reaction but does not take part in the chemical reaction.coeffiecentsreactantscatalystcombustion
- 8. Multiple ChoiceThe amount of a substance in a given volume.concentrationtemperaturesurface areacatalyst
- 9. Multiple ChoiceGrinding a seltzer tablet into powder increases the rate of reaction due to increasedconcentrationsurface areatemperaturereactants
- 10. Multiple ChoiceExposing more particles for collisions is an increase inconcentrationsurface areatemperaturecatalyst
- 11. Multiple ChoiceIncreasing the concentration increases the speed of reaction bylowering activation energyincreasing collisionsspeeding up the reactantsexposing more reactant
- 12. Multiple ChoiceWhich factors increase the rate of a reaction.increasing temperatureincreasing concentrationincreasing surface areaall of these
- 13. Multiple ChoiceIncreasing concentration increases reaction rate due to more collisions.TrueFalse
- 14. Multiple ChoiceWhich of the following slows down the rate of a chemical reaction?Place the reactants in hot waterPlace the products in ice bathPlace the reactants in a ice bathKeep stirring the reactants with a stirring rod
- 15. Multiple ChoiceWhich reaction is at the highest temperature?AB
- Answer choicesTagsAnswer choicesTags