Chem. 105 Name:____________________________

Worksheet: Energy of Chemical Reactions (10points)

1.When a piece of wood burns, where does all of that energy come from?

2. What is temperature?

3. What is heat?

4. 35 ml of water at 22 ^oC is heated until its temperature is 48 ^oC. What is the amount of heat absorbed by the water?

5. A student burns a piece of a candy bar that has a mass of 35 g under a beaker containing 900 ml of water. The waterπs temperature goes from 21 ^oC to 75 ^oC. How many calories did the water gain?

6. What is specific heat?