Specific Heat

The amount of energy required to raise the temperature 1ºC for every kilogram is called____?

• Thermal Energy
• Specific Heat
• Temperature
• Kinetic Energy

What is the symbol for Thermal Energy?

• Q
• t
• m
• C

What unit do you use to measure Thermal Energy?

• J/Kg ºC
• Kg
• ºC
• J

What is the equation to measure change in Thermal Energy?

• Q=mc∆t
• Q=mc
• Q= ∆mct
• m=QC

What does temperature measure?

• Heat
• ºC
• Kinetic Energy
• Thermal Energy

How does heat flow?

• Always from cold to warm
• Always from warm to cold
• Both warm to cold & cold to warm
• It depends on the temperature

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

• 50°
• 0°
• 100°
• 150°

What is the specific heat of an unknown substance if 100.0 g of it at 200.0 °C reaches an equilibrium temperature of 27.1 °C when it comes in contact with a calorimeter of water.  The water weighs 75. g and had an initial temperature of 20.00 °C?  (Specific heat of water is 4.18 J/g°C) (show your work)

• 0.111 J/g°C
• 1.29 J/g°C
• 0.129 J/g°C
• 22225.85 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 of copper?

• 12.82 °C
• 24.12°C
• 351 °C

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 Joules
• 209 J
• 83 J
• 4.18 J