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- 1. Multiple Choice
What type of reaction is this?EndothermicExothermic - 2. Multiple ChoiceWhat letter represents the activation energy?ABCD
- 3. Multiple ChoiceWhat is the energy of the activated complex?75 kJ225 kJ300 kJ225 kJ
- 4. Multiple ChoiceWhat is the activation energy of the reverse reaction?75 kJ300 kJ150 kJ225 kJ
- 5. Multiple ChoiceA substance that increases speed of chemical reaction without being being changed is called:CatalystAcidBasepressure
- 6. 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
- 7. 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.
- 8. Multiple ChoiceGrinding a seltzer tablet into powder increases the rate of reaction due to increasedconcentrationsurface areatemperaturereactants
- 9. 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
- 10. Multiple ChoiceWhich factors increase the rate of a reaction.increasing temperatureincreasing concentrationincreasing surface areaall of these
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