Specific heat capacity

___________ is measured by the unit Joules.

• Heat energy
• Temperature
• Specific heat

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 high specific heat means...

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

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

• c
• Q
• m
• 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 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

20 g of water. specific heat of water is 4.18 J/g°C. temperature changes from 25° C to 20° C, how much heat energy (Q) moves from the water to the surroundings?

• 418 J

• 209 J

• 83 J

• 4.18 J

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

• 1.95 °C

• 5128 °C

10 kg of aluminium is heated from 120C to 220C. How much energy is needed?

• 8 970 000 J

• 897 J

• 8970 J

• 89 700 J

• 897 000J