Specific Heat Practice

The temperature of an unknown piece of metal with a mass of 30.00 g changes from 25.0 °C to 35.0 °C when the metal absorbs 350.0 J of energy. What is the specific heat of the metal?

• 1.17 J/g°C
• -1.17 J/g°C
• 0.857 J/g°C
• -0.857 J/g°C

Tags

NGSS.HS-PS3-4

Water has a specific heat of 4184 J/KgºC.  Wood has a specific heat of 1760 J/KgºC.  What material needs more energy to raise the temperature 1ºC

• Wood
• Water
• Both are the same

The specific heat(c) of copper is 0.39 J/g °C. What is the temperature change(∆t) when 100 Joules of heat(Q) is added to 20 grams?

• 12.82 °C
• 24.12°C
• 351 °C

Tags

NGSS.HS-PS3-1

Energy is transferred as heat between two objects of ___________ temperatures. 

• differing
• same

Tags

NGSS.HS-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

A 300.0 g piece of copper is heated and fashioned into a bracelet. The amount of energy transferred by heat to the copper is 66,300 J. If the specific heat of copper is 0.3845 J/g ⁰C, what is the change of the copper's temperature?

• 641 °C

• 7,650,000 Joules

Tags

NGSS.HS-PS3-4

NGSS.HS-PS3-1

The specific heat of aluminum is 0.9025 J/g°C. How much heat(Q) is released when a 10.0 g piece of aluminum foil is taken out of the oven and cools from 100.0° to 50.0°?

• 451 J

• 45.1 J

• 400 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

Tags

NGSS.HS-PS3-4

Using the heat equation, what would the formula look like if we were solving for change in temperature?

• Q m = ∆T Cp
• Q / (m Cp)  =  ∆T
• Q m / Cp  =  ∆T
• m c Q  =  ∆T