Specific Heat

What  is the formula to calculate heat energy required to raise the temperature of any substance?

• Q=mc∆t
• Q=mc
• Q= ½mv
• m=QC

Water molecules have the greatest kinetic energy in
________________

• Ice at 0 °C.
• Water at 373 K.
• Water at 98 °C
• Steam at 150 °C.

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NGSS.HS-PS3-2

The SI units 

J/g°C 

 J/Kg °C 

 Cal/g°C

measures

• Specific heat
• mass
• temperature
• heat energy

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NGSS.MS-PS3-4

NGSS.MS-PS3-5

When a  piece of aluminum foil is taken out of the oven and cools from 100° to 50°, What is the change in temperature?

• 50°
• 0°
• 100°
• 150°

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NGSS.MS-PS3-4

The symbol for specific heat is .......

• c
• Q
• m
• t

If 200 grams of water is to be heated from 24.0° C to  100.0° C to make a cup of tea, what is the mass and what is the change in temperature?

• m=200g
  ∆t= 66
• m=200g
  ∆t=124
• m=200
  ∆t=100
• m=200g
  ∆t=76

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NGSS.MS-PS3-4

NGSS.MS-PS1-4

How many Joules of energy are required to change 10 gram of water from 20 C to 90 C?

• 1400 J
• 2800 J
• 210,000 J
• 1,400,000 J

Tags

NGSS.HS-PS3-4

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

Based on its phase diagram, which is the most dense state for CO₂?

• gas
• liquid
• solid
• supercritical fluid

Tags

NGSS.HS-PS3-4

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

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NGSS.HS-PS3-4