specific heat

Heat, Temperature and Specific Heat

By Jonathan Schaibly

Multiple Choice

What does "q" mean?

• A measure of heat energy

• A change in heat energy

• A measure of kinetic energy

• A change in temperature

Multiple Choice

Specific heat is....

• The measure of kinetic energy of an objects particles
• A measure of the energy needed to increase the average kinetic energy of the particles
• The heating caused by the motion of flluid due to temperature difference
• The transfer of energy by electromagnetic radiation

Multiple Choice

There are four cups of hot cocoa. The cup sizes are shown. The temperature of the cocoa in each cup is 25 degrees celsius. Which cup has the MOST thermal energy?

• Large cup (Trenta)
• Small cup (Tall)
• Medium cup (Venti)
• All three are the same temperature so they have the same thermal energy

Multiple Choice

What does temperature measure?

• Heat
• ºC
• Kinetic Energy
• Thermal Energy

Multiple Choice

Iron Man, Captain America, and Black Widow are in a heated discussion in the Avengers Tower. They are trying to figure out what temperature actually measures while designing a new suit. Can you help them out?

• The amount of heat

• The unit ºC

• The kinetic energy of particles

• The thermal energy

Multiple Choice

Iron Man, Captain America, and Thor were testing a new weapon on a cold day in Siberia. They noticed that the temperature dropped from 100ºC to 40ºC during their test. Can you help them figure out the temperature change?

• 60ºC

• 40ºC

• -60ºC

• -40ºC

Multiple Choice

Copper, Stainless Steel, Carbon Steel, and Zinc were all heated using 10,000 JOULES of thermal energy.  Based on the chart, which material would be have the SMALLEST change in temperature?

• Copper
• Carbon Steel
• Zinc
• Stainless Steel

Multiple Choice

During a Marvel movie marathon, Tony Stark, Steve Rogers and Natasha Romanoff have a disagreement. Tony says heat always flows from cold to warm, Steve thinks it's always from warm to cold, and Natasha believes it's both ways. Who is correct?

• Tony Stark

• Steve Rogers

• Natasha Romanoff

• It depends on the temperature

Multiple Choice

When a computer heats up, do you want computer components that have a high or low specific heat?

• High, so that it will not change temperature easily and overheat
• Low, so that it will change temperature easily.

Math Response

How much heat energy is added when 114 g of water at 14.85 Celsius is raised to 18.00 Celsius?

Type answer here

Correct Answer: 359.1

Deg^°

Rad

Multiple Choice

In an exothermic process, the surroundings are gaining energy.

• True
• False

Math Response

A total of 226 J of heat are absrobed as 58.3 g of lead is heated from 12.0 Celsius to 42.0 Celsius. What is the specific heat of lead?

Type answer here

Correct Answer: 0.129

Deg^°

Rad

Math Response

How much heat is required to raise the temperature of 20.0 g of iron from 26.0 Celsius to 72.30 Celsius? The specific heat of iron = 0.444 J/g*C.

Type answer here

Correct Answer: 411.144

Deg^°

Rad

Multiple Choice

There are 2 pans of water, one has 100 mL in it and one has 1000mL. You add 4000 joules of energy,  which one has the bigger change in temperature?

• 100 mL
• 1000 mL
• They the same material so they both heat to the same temperature
• They both will cool down.

Multiple Choice

The total energy of all the particles in a substance is called: 

• temperature
• thermal energy
• degrees
• mass

Multiple Choice

A reaction is performed in a beaker with a temperature probe recording the temperature changes of the reaction.  If the temperature began at 15.0 degrees Celsius and ended at 27.5 degrees Celsius. Is the reaction endothermic or exothermic?

• Exothermic
• Endothermic

Math Response

11.1 J of heat is added to a 4.11 g sample of silicon, and the temperature of the sample raises 3.8 Celsius. What is the specific heat of silicon?

Type answer here

Correct Answer: 0.71

Deg^°

Rad

Math Response

What is the temperature change for a 84.0 g sample of mercury if 450.0 J of heat energy is added? (specific heat of mercury = 0.138 J/g*C)

Type answer here

Correct Answer: 38.8

Deg^°

Rad

Multiple Choice

For a skillet, used for cooking, do you want a high or low specific heat

• High, so that it will need more energy to heat up

• Low, so that it will change temperature quickly

Multiple Choice

If two objects have different temperatures when they come in contact, heat will flow from the warmer object to the cooler one UNTIL ____________

• one reaches a temperature of zero

• they both have an equal temperature

• one runs out of energy

Math Response

How much heat energy, in Joules, is absorbed by a container of 545 g of water in order to raise the temperature from 20.0 Celsius to 30.0 Celsius?

Type answer here

Correct Answer: 5450

Deg^°

Rad

Math Response

How much heat is required to raise the temperature of 125 g aluminum from 25.0 Celsius to 100.0 Celsius?

(specific heat of aluminum = 0.899 J/g*C)

Type answer here

Correct Answer: 8428.1

Deg^°

Rad

Math Response

If it takes 31,500 J to heat 875 g of water, what is the temperature change?

Type answer here

Correct Answer: 36

Deg^°

Rad

Math Response

When a 4.0 g sample of glass was heated from 22.6 Celsius to 63.9 Celsius, the glass was found to have absorbed 32 J of heat. What is the specific heat of this type of glass?

Type answer here

Correct Answer: 0.19

Deg^°

Rad

Math Response

An iron nail with a mass of 12.37 g absorbs 15 J of heat. If the nail was initially at 28 Celsius, what is its final temperature?

Type answer here

Correct Answer: 30.27

Deg^°

Rad

Multiple Choice

The movement of thermal energy from an object at a higher temperature to an object at a lower temperature is called ____________.

• thermal
• expansion
• temperature
• heat

Multiple Choice

What letter do we use to represent specific heat?

• Q

• m

• c

• $$\Delta T$$