Heat, Calorimetry, & percent error

What information does the specific heat capacity of water tell us?

• How much energy was released in the combustion of our food item

• The amount of energy to raise the temperature of 1 gram of water 1 Celsius degree

• The amount of energy in our water when we started the calorimetry lab

• It is just a constant to help us cancel units

Combustion is an __________ process.

• Endothermic

• Exothermic

• Energy Neutral

What would be the effect on the particles if more heat is supplied to the system?

• They would slow down
• They would stop moving
• They would speed up
• There would be no effect

If two objects have different temperatures when they come in contact, heat will flow from the warmer object to the cooler one UNTIL ____________

• one reaches a temperature of zero

• they both have an equal temperature

• one runs out of energy

There are 2 pans of water, one has 100 mL in it and one has 1000mL. You add 4000 joules of energy,  which one has the bigger change in temperature?

• 100 mL
• 1000 mL
• They the same material so they both heat to the same temperature
• They both will cool down.

Copper, Stainless Steel, Carbon Steel, and Zinc were all heated using 10,000 JOULES of thermal energy. What material would be have the LARGEST change in temperature?

• Copper

• Carbon Steel

• Zinc

• Stainless Steel

For the formula:
 Q= m c ∆T
The  units for specific heat are:

• g /J C
• °C/g J
• kJ/g
• J/g°C

How many Joules of energy are required to change 10. gram of water from 20. ^οC to 90. ^οC?

• 700 J

• 2900 J

• 290 J

• 1400 J

• 29,000 J

How many Joules of energy are required to make 100.0 grams of ice at 0.0 ^οC completely melt?

• 200 J

• 334 J

• 33,400 J

• 140,000 J

A high specific heat means...

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