Lab: Reaction Rate

Question 1

To test the first hypothesis, you measured the reaction rate for several different volumes.✔ temperatures.densities.particle sizes.

Revolt · Accepted Answer

B: ✔ temperatures.

Question 2

Question 2

Revolt · Accepted Answer

the reaction: lesser; to reaction rate.: inversely proportional

Question 3

Your stomach is upset. You want relief – and fast! What actions could you take to speed up the reaction of the tablet? Check all that apply.

Revolt · Accepted Answer

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Question 4

Why was the weigh/filter paper used in this experiment? Check all that apply.

Revolt · Accepted Answer

A: to weigh the tablet; B: to make sure that all of the broken pieces of tablet were added to the water; D: to allow for fair comparison of all three trials, with different particle sizes; E: to avoid experimental error

Question 5

Suppose that a student did not stop the timer as soon as bubbling stopped during a test at 40°C. Check all possible resulting errors.

Revolt · Accepted Answer

B: The reaction time will be too long.; E: The reaction time will resemble the reaction time for a lower temperature.

Question 6

Reptiles, amphibians, and fish are all cold-blooded animals. Their body temperatures are determined by their surroundings. How does a cold-blooded animal’s ability to digest food change in colder temperatures?

Revolt · Accepted Answer

C: It digests food more slowly at lower temperatures.

Question 7

The data showed that for higher temperatures, the reaction rate ✔ increases.decreases.does not change.fluctuates randomly.

Revolt · Accepted Answer

A: ✔ increases.

Question 8

Suppose that a different student obtained reaction rates for the particle-size experiment, and that these rates did not show a pattern. Check all possible sources of this error.

Revolt · Accepted Answer

A: Some of the broken tablet was not added to the water.; B: The tablet was not crushed enough to make a substantial difference.; D: The tablets were not uniform in their mass.

Question 9

To test the second hypothesis, you measured the reaction rate for several different volumes.temperatures.densities.✔ particle sizes.

Revolt · Accepted Answer

D: ✔ particle sizes.

Question 10

Question 10

Revolt · Accepted Answer

the surface area. Therefore, particle size is: greater; to surface area.: inversely proportional

Lab: Reaction Rate Answers

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