Calorimetry Lab

What did you physically observe during calorimetry that would lead you to believe that metabolizing foods is an exothermic process?

• fire

• light

• heat

• ATP

Tags

NGSS.HS-LS1-7

NGSS.HS-PS1-4

What information does the specific heat capacity of water tell us?

• How much energy was released in the combustion of our food item

• The amount of energy to raise the temperature of 1 gram of water 1 Celsius degree

• The amount of energy in our water when we started the calorimetry lab

• It is just a constant to help us cancel units

Check all of the ways in which we lost energy between our burning food and the water in the can.

• Heat going into the air around the burning food

• Light being released during combustion

• Heat going into the paper clip

• Heat going into the can

• Heat going into our hands as we lit the food

Tags

NGSS.HS-PS3-4

Check all of the sources of error in our experimental set-up:

• Heat energy being released into the surroundings

• Light energy released during combustion

• Holding the lighter under the can

• Starting at a different initial temperature every time

• Having too much water in the can

Tags

NGSS.HS-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.HS-PS3-1

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-PS1-4

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.HS-PS3-1

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.HS-PS3-1

NGSS.HS-PS3-4

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

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.HS-PS3-1

NGSS.HS-PS3-4