Calculating Heat

 How many joules of heat are needed to raise the temperature of 10.0 g of aluminum from 22°C to 55°C, if the specific heat of aluminum is 0.90 J/gx°C?    

• 297 Joules
• 0.003 Joules
• 297 J/gx°C
• 0.003 J/gx°C

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

A 15.75-g piece of iron absorbs 1086.75 joules of heat energy, and its temperature changes from 25°C to 175°C.  Calculate the specific heat capacity of iron.    

• 0.46 J/gx^oC
• 1.654 J/gx^oC
• 2,567,446.875 J/gx^oC

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

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-PS1-4

NGSS.MS-PS3-4

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

• c
• Q
• m
• t

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

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

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

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NGSS.MS-PS1-4

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A high specific heat means...

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

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NGSS.MS-PS1-4

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

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

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

The specific heat of aluminum is 0.21 J/g°C.  How much heat(Q) is released when a 10 g piece of aluminum foil is taken out of the oven and cools from 100° to 50°?

• 105 J
• 10.5 J
• 1.05 J

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

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

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NGSS.MS-PS1-4

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