Calculating Heat and Final Temperature

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

A high specific heat means...

• It heats up quickly with energy added
• It requires more energy to change temperature

Tags

NGSS.HS-PS3-1

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

Compared to metal, water seems to have a ___________ specific heat.

• High, it takes a lot of energy to heat up and change temperature
• Low, because it does not require a lot of energy to change temperature

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.

The Greek letter Δ stands for?

• rate of
• change in 
• heat released
• heat stored

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NGSS.HS-PS3-1

NGSS.HS-PS1-4

The specific heat of ethanol is 2.46 J/g°C. Calculate the heat energy needed to raise the temperature of 193 gram sample from 19°C to 35°C.

• 7600 J
• 943 J
• 129 J
• 456 J

Tags

NGSS.HS-PS3-4

A 4.0 g iron sample's temperature was raised 20.0°C. It absorbed 35.2 J of heat energy. What is the specific heat of iron?

• 0.24 J/g°C
• 0.384 J/g°C
• 0.44 J/g°C
• 0.13 J/g°C

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4

What is the specific heat if a 6.0 g sample absorbs 50.0 J when heated from 30°C to 50°C?

• 6000 J/g°C
• 0.4 J/g°C
• 26 J/g°C
• 0.0006 J/g°C

Tags

NGSS.HS-PS3-1

350 J are released as ice ( Specific Heat = 2.1 J / (g ^oC) ) cools from - 5.0 ^oC to -32 ^oC. What is the mass of ice?

• 0.16 g
• 6.2 g
• 4.5 x 10³ g
• 2.0 x 10⁴ g

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4