Thermal Physics Revision

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-PS3-4

A material was cooled from 100ºC to 40ºC.  What is the temperature change?

• 60ºC
• 40ºC
• -60ºC
• -40ºC

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

The specific heat capacity of a substance is the quantity of heat required to

• melt 1 kg of the substance.

• raise the temperature of the substance by 1⁰C.

• raise the temperature of 1 kg of the substance by 1⁰C.

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NGSS.MS-PS3-4

Which statement defines the thermal capacity (heat capacity) of a solid body?

• the energy needed to melt the body without a change in temperature

• the energy needed to raise the temperature of the body by one degree Celsius

• the increase in the volume of the body when its temperature is raised by one degree Celsius

• the total amount of internal energy in the body

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NGSS.MS-PS3-3

Graphite has a specific heat capacity of 0.709 J/g⁰C. If a 20 g piece of graphite is cooled from 38⁰C to 18⁰C, how much energy was lost by the graphite?

• 283.6 J

• 183.6 J

• 203 J

• 109 J

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NGSS.MS-PS1-4

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 temperature of a 6.0 g sample of glass changed from 20.0°C to 45.0°C when it absorbed 550 J of heat. What is the specific heat capacity of this glass?

• 0.27 J/g °C

• 3.7 J/g °C

• 130 J/g °C

• 12 J/g °C

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

How much energy is needed to raise the temperature of 5.0 g of lead from 25°C to 35°C?

• Specific Heat Capacity (c) = 0.129 J/(g•°C)

• 6.45 J/(g•°C)

• 6.45 J

• 16.1 J/(g•°C)

• d.16.1 J

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

Latent heat is

• the heat absorbed or released at a boiling process during a change of phase

• the heat absorbed or released at a constant temperature during a change of phase

• the heat absorbed or released at a constant temperature during a change of phase of 1 kg object

• the heat absorbed or released by an object to increase or decrease its temperature by 1 degree Celcius

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

The heat absorbed by melting a solid is known as

• latent heat of fusion

• latent heat of solid

• latent heat of liquid

• latent heat of vaporisation

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NGSS.MS-PS1-4

NGSS.MS-PS3-4