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WorksheetsHeat, Calorimetry, & percent error
Total questions: 19
Worksheet time: 19mins
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
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
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
Q= m c ∆T
The units for specific heat are:
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
Why does an ice cube melt when dropped into hot liquid?
The liquid absorbs heat from the ice.
Heat from the liquid transfers to the ice.
Heat from the ice transfers to the liquid.
Cold from the ice transfers into the liquid.
How much heat energy must be removed to turn 14 grams of liquid water to a solid at 0 degrees Celsius?
59 J
4,700 J
20,000 J
32,000 J
How much heat energy is needed to change 27 grams of water at 100 degrees Celsius into a gas?
none, if it is at 100 degrees it must be a gas
110 J
9,100 J
61,000 J
A piece of a Jolly Rancher is burned in a Calorimeter. There is 100.0 mL of water in the calorimeter and it rises in temperature by 20.0 degrees Celsius. How many Joules of energy did the Jolly Rancher give off?
2,100 J
4,180 J
8,360 J
18,000 J
How much energy must be added to a 32 gram sample of ice (solid water) at 0 degrees Celsius to completely turn it into a gas (water vapor) at 100 degrees Celsius?
96,000 J
11,000 J
72,000 J
8,300 J
How much energy must be removed from a 32 gram sample of water vapor at 100 degrees Celsius to completely turn it into a solid (ice) at 0 degrees Celsius?
96,000 J
11,000 J
72,000 J
8,300 J
You determine that a sample of snack food is 1,600 calories/gram but the package says it is 5.4 Cal/g. What is your percent error?
+ 30,000 %
- 70. %
- 30. %
+ 300 %
True or False: A Food Calorie is equal to 1,000 regular calories
True
False
If you try to burn a Cheeto, it will
surprisingly not ignite since it does not contain much energy
burn slightly as long as you hold the match to it
burn brightly giving off a surprising amount of heat
run away to protect itself
