Tuesday 1/22/13Objective: Solve heat equations and

review for energy testHomework: Study for energy test on Wed

Quote: Education is the key to unlock the golden door of freedom. George Washington Carver

Bell What is the freezing point?What is the boiling point?What is the melting point?

Where is there a gas/liquid phase?Where is there only gas?

A

B

C

D

A solid turning to a gas is called ______A liquid becoming a solid is called _____ or

________Fusion is another name for _______A gas becoming liquid is called ______Phase changes that require energy are

______Deposition is when _____ becomes a ______Vaporization is when _______ becomes a

_______Specific heat is the ______ to ______ 1 g of

a substance ______

A 400 g can of soda froze and was at -10°C when taken out of the freezer and allowed to heat up to 22°C. How much energy in kJ does the soda absorb?

What is the final temperature of a 300 g bowl of soup with an initial temperature of 22°C that absorbed 75000J of heat?

A 2200g piece of a concrete wall had a temperature of 20°C in the morning and by the afternoon its temperature was 37°C. Concrete has a specific heat of 0.84J/g°C. How much energy did the concrete absorb?

What is the specific heat of aluminum? A 40 g piece absorbed 1600J of energy when its temperature raised from 10°C to 55°C.

To make a kool-aid popsicle, 50 g of cool-aid at 23°C was placed in a freezer where the temperature is -5°C. How much energy must be removed from the kool-aid to make a popsicle?