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- 1. Multiple Choice
List four factors that affects the rate of a reaction
temperature
concentration
surface area
volume
catalysts
- 2. Multiple Choice
A temperature increase causes the particles ......
to slow down
move faster
collide higher
in the right order
- 3. Multiple Choice
How does a catalyst work in speeding up a reaction?
By lowering the activation energy or reaction
by giving them more energy
by making them more available
- 4. Multiple ChoiceThe rate of a chemical reaction is NOT affected by which of the following:temperatureconcentrationparticle size (surface area)All of these affect reaction rates
- 5. Multiple ChoiceThe rate of a reaction increases as temperature__________________.DecreasesIncreasesStays the Same
- 6. Multiple ChoiceProducts will form faster if____________the particle size of the reactants are larger.temperature is decreased.concentration of the reactants are increased.the reaction is not stirred.
- 7. Multiple ChoiceA ______________ is a substance that increases the rate of a reaction without being used up during the reaction.catalystproductreactantsolute
- 8. Multiple ChoiceThe ___________ the surface area of the reactants, the faster the reaction rate.largersmaller
- 9. Multiple ChoiceSmaller particle size allows for a _________ surface area to be exposed for the reaction.largersmaller
- 10. Multiple ChoiceIncreasing the temperature will increase the kinetic energy of particles, therefore increasing the collisions between particles.falsetrue
- 11. Multiple ChoiceUsually lowering the temperature will slow down a reaction.falsetrue
- 12. Multiple ChoiceIncreasing the concentration of the reactants will slow down the reaction.falsetrue
- 13. Multiple ChoiceA catalyst increases the efficiency of collisions between reactants.truefalse
- 14. Multiple ChoiceYou observe bubbles after adding metal to a solution. Do you assume a chemical reaction took place?YesNo
- 15. Multiple ChoiceA solution is heated and bubbles form. Do you assume a chemical reaction took place?YesNo
- 16. Multiple ChoiceTwo clear and colorless solutions are combined within a test tube. The result is very cloudy. Do you assume a chemical reaction took place?YesNo
- 17. Multiple ChoiceTwo clear and colorless solutions are combined within a test tube. The resulting solution is purple. Do you assume a chemical reaction took place?YesNo
- 18. Multiple ChoiceMetal is added to a solution in a test tube. The test tube now feels cooler. Do you assume a chemical reaction took place?YesNo
- 19. Multiple ChoiceA beaker containing a solution is heated. The beaker now feels warm. Do you assume a chemical reaction took place?YesNo
- 20. Multiple Choice
Which factors affect the rate of a reaction?
temperature
concentration
surface area
pressure
catalyst
- 21. Multiple Choice
A temperature increase causes the particles to ......
to slow down
move faster
collide higher
in the right order
- 22. Multiple Choice
Why does a higher concentration increase the rate of reaction?
it increases the amount of reactants
it lowers the activation energy
it increases the energy of particle collisions
it increases the frequency of particle collisions
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