Heat and Calorimeter

What is the purpose of a calorimeter?

• To measure the volume of an object

• To measure the weight of an object

• To measure the heat content of an object

• To measure the temperature of an object

Answer explanation

Using this equipment, we can measure the heat produced or absorbed in a physical or chemical process

Tags

NGSS.HS-PS3-4

Why is a calorimeter made of copper?

• Copper is a good conductor of heat

• Copper is a poor conductor of heat

• Copper is easily available

• Copper is cheap

Tags

NGSS.MS-PS3-3

Mark the stirrer in the diagram.

Answer explanation

A calorimeter has two vessels, an inner and an outer one. This way, no heat can be transferred from the inner to the outer vessel or from the outer to the inner vessel. Thus, the inner vessel is thermally isolated from the surroundings. The inner vessel is made of copper. A thermometer for measuring the temperature and a stirrer for stirring the liquid in the calorimeter are fitted in it.

Tags

NGSS.MS-PS1-4

A calorimeter contains 200 g of water at 25°C. If 100 g of a substance at 100°C is added and the final temperature is 30°C, what is the specific heat capacity of the substance? (Assume no heat loss to the surroundings)

• 0.5 J/g°C

• 1.0 J/g°C

• 2.0 J/g°C

• 4.0 J/g°C

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

If 500 J of heat is added to 50 g of a substance, causing its temperature to increase by 5°C, what is the specific heat capacity of the substance?

• 2 J/g°C

• 1 J/g°C

• 0.5 J/g°C

• 0.2 J/g°C

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

A 250 g sample of a metal is heated from 20°C to 70°C, requiring 7500 J of energy. What is the specific heat capacity of the metal?

• 0.6 J/g°C

• 0.3 J/g°C

• 1.2 J/g°C

• 0.9 J/g°C

Tags

NGSS.MS-PS3-4

A 150 g piece of metal is heated from 25°C to 75°C, absorbing 4500 J of heat. What is the specific heat capacity of the metal?

• 0.6 J/g°C

• 0.3 J/g°C

• 1.2 J/g°C

• 0.9 J/g°C

Tags

NGSS.MS-PS3-4

If 200 g of a substance absorbs 5000 J of heat and its temperature rises by 10°C, what is its specific heat capacity?

• 2.5 J/g°C

• 0.25 J/g°C

• 5.0 J/g°C

• 0.5 J/g°C

Tags

NGSS.MS-PS3-4

If 200 g of a substance releases 4000 J of heat and its temperature decreases by 20°C, what is its specific heat capacity?

• 1.0 J/g°C

• 0.5 J/g°C

• 2.0 J/g°C

• 0.25 J/g°C

Tags

NGSS.MS-PS3-4

A 100 g sample of a substance is heated from 30°C to 80°C, absorbing 2500 J of heat. What is the specific heat capacity of the substance?

• 0.5 J/g°C

• 0.25 J/g°C

• 1.0 J/g°C

• 0.75 J/g°C

Tags

NGSS.MS-PS3-4