Energy and Specific Heat

A 14.00-g piece of iron absorbs 1000 joules of heat energy, and its temperature changes from 25°C to 125°C.  Calculate the specific heat capacity of iron.    

• 0.46 J/g^oC
• 0.71 J/g^oC
• 1.4 J/g^oC
• 14,000,000 J/g⁰C

 How many joules of heat are needed to raise the temperature of 5.0 g of aluminum from 22°C to 32°C, if the specific heat of aluminum is 0.90 J/g°C?    

• 45 Joules
• 450 Joules
• 0.018 J/g°C
• 0.45 J/g°C

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4

A 4.0 gram piece of copper is heated and fashioned into a bracelet.  The amount of energy transferred by heat to the copper is 6,000 J.  If the specific heat of copper is 0.40 J/g⁰C, what Is the change of the copper's temperature? 

• 3,750 °C
• 3,750 K
• 37.5 ⁰C
• 37.5 K

Tags

NGSS.HS-PS3-4

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

• -50°C
• 50°
• -150°
• 150°

Tags

NGSS.MS-PS3-4

When a  piece of aluminum is put into the oven and heats up from 30°C to 100°C, What is the change in temperature?

• 70°
• 50°
• -70°
• 130°

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

• c
• Q
• m
• t

The symbol for heat capacity 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

Specific heat has the units...

• J/g⁰C
• Joules
• calories
• J/⁰C

A high specific heat means...

• It heats up quickly with energy added
• It requires more energy to change temperature
• It is very hot 
• It is high in the sky like the sun