Question 1

Which of the following best defines thermal energy?

Accepted Answer

The sum of the kinetic and potential energies of all atoms in an object.

Question 2

If a cube of ice at $$0^	ext{o}C is $$placed next to a cube of water at $$25^	ext{o}C$$, which direction will heat flow?

Accepted Answer

From the water to the ice.

Question 3

Which of the following containers would have the greatest amount of thermal energy if all are at the same temperature?

Accepted Answer

A large bathtub of water.

Question 4

What is the correct formula to convert Celsius to Kelvin?

Accepted Answer

$$K = ^	ext{o}C + 273.15$$

Question 5

A scientist measures the temperature of a solution as $$25^	ext{o}C. $$What is this temperature in Kelvin?

Accepted Answer

$$298.15\ K$$

Question 6

One of the hottest recorded days in the U.S. was $$128^	ext{o}F in $$Lake Havasu City, Arizona. What is this temperature in Celsius?

Accepted Answer

$$53.3^	ext{o}C$$

Question 7

At what temperature is the reading in degrees Fahrenheit equal to the reading in degrees Celsius?

Accepted Answer

$$-40$$

Question 8

Which of the following statements about temperature and heat is correct?

Accepted Answer

Heat flows from objects at higher temperature to objects at lower temperature.

Question 9

If the melting point of phosphorus is $$44.1^	ext{o}C$$, what is this temperature in Kelvin?

Accepted Answer

$$317.25\ K$$

Question 10

A student heats a sample from $$20^	ext{o}C to$$ $$80^	ext{o}C. $$What is the change in temperature in Kelvin?

Accepted Answer

$$60\ K$$

Question 11

Which of the following is a correct statement about the Kelvin scale?

Accepted Answer

It starts at absolute zero, where all molecular motion stops.

Question 12

A chemical reaction requires a minimum temperature of $$350\ K. $$What is this temperature in Celsius?

Accepted Answer

$$76.85^	ext{o}C$$

Question 13

Which of the following is NOT a unit used to measure temperature?

Accepted Answer

Joule

Question 14

If a sample of water is heated from $$10^	ext{o}C to$$ $$50^	ext{o}C$$, what is the final temperature in Kelvin?

Accepted Answer

$$323.15\ K$$

Question 15

Which of the following best describes the relationship between heat and temperature?

Accepted Answer

Heat is the transfer of thermal energy due to a temperature difference.

Temperature, Heat, and Temperature Conversions

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