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- 1. Multiple Choice
Which factors affect the rate of a reaction?
temperature
concentration
surface area
the size of a reaction container
catalyst
- 2. Multiple Choice
A temperature increase causes the particles to ......
to slow down
move faster
collide higher
in the right order
- 3. 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
- 4. Multiple Choice
Why does a higher temperature increase the rate of a reaction?
it increases both the frequency and energy of particle collisions
it only increases the frequency of particle collisions
it only increases the energy of particle collisions
it reduces the activation energy of the reaction
- 5. Multiple ChoiceWhat is the rate of reaction?How fast a reaction isHow big a reaction isHow loud a reaction isHow much gas a reaction produces
- 6. Multiple Choice
Breaking up a lump of potassium into smaller pieces increases the rate of reaction due to increased
concentration
surface area
temperature
reactants
- 7. Multiple Choice
A temperature increase causes the particles ......
to slow down
move faster
collide higher
in the right order
- 8. Multiple Choice
Which factors increase the rate of a reaction?
increasing temperature
increasing concentration
increasing surface area
All of these
- 9. Multiple Choice
The rate of a reaction is how _____________ a reaction occurs.
Quickly
Easily
Unusually
Differently
- 10. Multiple Choice
Decreasing the size of the reaction container means that particles are ___________ together.
Happy
Never
Paired
Closer
- 11. Multiple Choice
Increasing the temperature gives particles more __________.
Time
Energy
Space
Frequency
- 12. Multiple Choice
As the frequency of ______________ increases, the rate of reaction increases.
Hint: frequency means how often
Time
Reactions
Collisions
Reactants
- 13. Multiple Choice
As the ______________ of collision increases, the rate of reaction increases.
Hint: frequency means how often
Time
Speed
Frequency
Minutes
- 14. Multiple Choice
Increasing the temperature, increases the _____ of reaction
Catalyst
Time
Rate
Weight
- 15. Multiple ChoiceRate of chemical reaction meansamount of product formedspeed of reactionconcentration of reacting particlescombining reactants with products
- 16. Multiple Choice
You add more people into an enclosed space in hope for more collisions. You have increased:
temperature
concentration
pressure
catalyst
- 17. Multiple Choice
You make a space much smaller hoping to increase the reaction rates. Which one did you change?
temperature
concentration
catalyst
decreased the size of the reaction container
- 18. Multiple Choice
Why does a higher temperature increase the rate of a reaction?
it increases both the frequency and energy of particle collisions
it only increases the frequency of particle collisions
it reduces the energy of particle collisions
it reduces the activation energy of the reaction
- 19. Multiple ChoiceWhy does breaking up a solid reactant increase the rate of reaction?it creates more solidit creates more energyit increases the surface areait increases the concentration
- 20. Multiple ChoiceWhy does a higher concentration increase the rate of reaction?it increases the amount of reactantsit lowers the activation energyit increases the energy of particle collisionsit increases the frequency of particle collisions
- 21. Multiple Choice
This question is based on the video you watched:
Hiring a matchmaker is the same as
increasing the temperature
using a smaller container
adding more reactants
breaking up a lump of solid into smaller pieces
adding a catalyst
- 22. Multiple Choice
This question is based on the video you watched:
Shrinking the size of corridors in school is the same as
increasing the temperature
using a smaller container
adding more reactants
breaking up a lump of solid into smaller pieces
adding a catalyst
- 23. Multiple Choice
This question is based on the video you watched:
Cutting the time in between lesson by half (the students need to run faster to get to their lessons on time) is the same as
increasing the temperature
using a smaller container
adding more reactants
breaking up a lump of solid into smaller pieces
adding a catalyst
- 24. Multiple Choice
This question is based on the video you watched:
Not allowing students to travel in packs is the same as
increasing the temperature
using a smaller container
adding more reactants
breaking up a lump of solid into smaller pieces
adding a catalyst
- 25. Multiple Choice
This question is based on the video you watched:
Adding more students to the school is the same as
increasing the temperature
using a smaller container
increasing concentration
breaking up a lump of solid into smaller pieces
adding a catalyst
- Answer choicesTagsAnswer choicesTags