Thermochemistry 2

What unit do you use to measure Thermal Energy?

• J/Kg ºC
• Kg
• ºC
• J

What letter is used to represent specific heat capacity?

• H

• P

• C

• T

What unit do you use to measure Thermal Energy?

• J/Kg ºC
• Kg
• ºC
• J

What is Specific Heat?

• The  amount of thermal energy required to increase the temperature of 1kg of a material by 1°C.
  
• The  amount of radiant energy required to increase the temperature of 1kgof a material by 1°C
• The  amount of energy required to increase the temperature of 1kgof a material by 1°C.
• The  amount of friction  required to increase the temperature of 1kgof a material by 1°C.

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

• c
• Q
• m
• t

A high specific heat means...

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

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

___________ is measured by the unit Joules.

• Heat energy
• Temperature
• Specific heat

The specific heat of platinum is 0.133 J/g°C. How much heat(Q) is released when a 10 g piece of platinum cools from 100°C to 50°C?

• 66.5 J

• 665 J

• 0.0266 J

• 0.665 J

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