Question 1

A laboratory experiment requires a reaction to be carried out at 77°F. What is this temperature in Celsius?
Correct answer: 25°C

Accepted Answer

25°C

Question 2

Which of the following statements about temperature scales is correct?
Correct answer: The Kelvin scale starts at absolute zero, where molecular motion theoretically ceases.

Accepted Answer

The Kelvin scale starts at absolute zero, where molecular motion theoretically ceases.

Question 3

A medical thermometer reads 38°C. What is this temperature in Fahrenheit?
Correct answer: 100.4°F

Accepted Answer

100.4°F

Question 4

If a sample is cooled from 25°C to −10°C, what is the change in temperature in Kelvin?
Correct answer: −35 K

Accepted Answer

−35 K

Question 5

Which temperature is the coldest?
Correct answer: 0 K

Accepted Answer

0 K

Question 6

A chemist needs to convert a temperature of 212°F to Kelvin. What is the correct value?
Correct answer: 373.15 K

Accepted Answer

373.15 K

Question 7

Why is the Kelvin scale preferred in scientific calculations over Celsius or Fahrenheit?
Correct answer: Because it starts at absolute zero, making calculations involving energy and gas laws more straightforward.

Accepted Answer

Because it starts at absolute zero, making calculations involving energy and gas laws more straightforward.

Question 8

A weather report states the temperature is −40°F. What is this temperature in Celsius?
Correct answer: −40°C

Accepted Answer

−40°C

Question 9

A student incorrectly converts 0°C to Kelvin and gets 0 K. What is the error in their reasoning?
Correct answer: They failed to add 273.15 to the Celsius temperature.

Accepted Answer

They failed to add 273.15 to the Celsius temperature.

Question 10

A reaction mixture is maintained at 350 K. What is this temperature in Fahrenheit?
Correct answer: 170.33°F

Accepted Answer

170.33°F

Question 11

Which of the following best describes the relationship between Celsius and Kelvin scales?
Correct answer: They have the same degree size, but different zero points.

Accepted Answer

They have the same degree size, but different zero points.

Question 12

A scientist needs to cool a sample from 50°C to 10°C. What is the temperature change in Kelvin?
Correct answer: −40 K

Accepted Answer

−40 K

Question 13

If the boiling point of water is 100°C, what is it in Kelvin?
Correct answer: 373.15 K

Accepted Answer

373.15 K

Mathematical Relationships Between Temperature Scales

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