Specific Heat Capacity

Specific Heat Capacity Review

Have you ever experienced what is shown in the picture? Think, and choose the best answer in next slide.

Multiple Choice

The sun heats up the sand and sea water at the same period of time. Which is the correct observation from the situation given?

• sand gets hot slowly and sea water gets hot quickly

• sand gets hot quickly and sea water gets hot slowly

• both gets hot in a same time.

Different objects have different heat capacity. Remember on the first picture? Sand has a low heat capacity and gets hot quickly while sea water has a high heat capacity and gets hot slowly.

Heat capacity, C

Heat capacity, C, of an object is the quantity of heat needed to raise the temperature of the object by 1°C.

Q = quantity of heat supplied

ΔT = change in temperature
m = mass

Multiple Choice

"When 100 J of heat is supplied to objects X and Y, object X experiences a rise in temperature of 1°C and object Y 2°C. "

Based on the statement above, which objects have higher heat capacity?

• X

• Y

Multiple Choice

When 100 J of heat is supplied to objects X and Y, object X experiences a rise in temperature of 1°C and object Y 2°C. This is due to object have different heat capacity. Based on this, which of the best assumption?

• the rise of temperature of object X is bigger

• the rise of temperature of object X is smaller

Memorize this!!!!

"The temperature increase is small if the object has a high heat capacity."

Multiple Choice

When 500 J of heat is supplied to objects M, N and O, object M experiences a rise in temperature of 5°C, object N= 3°C and object O = 7 °C. Which object has higher heat capacity?

• M

• N

• O

Multiple Choice

When 500 J of heat is supplied to objects M, N and O, object M experiences a rise in temperature of 5°C, object N= 3°C and object O = 7 °C. Which object has smaller heat capacity?

• M

• N

• O

Multiple Choice

When 100 J of heat is supplied to objects W, X , Y and Z, object W experiences a rise in temperature of 4°C , object X = 1°C, object Y = 3 °C and Z = 2°C. Arrange the objects in smallest to biggest heat capacity.

• W, Y, Z, X

• Z, W, Y, X

• Y, X, W, Z

• X, Z, Y, W

Draw

Observe the diagram given. Both objects are heated by an immersion heater with 12,000 J of energy for 5 minutes, but they have different masses. Which object do you think will have larger temperature increase? (circle the picture)

Multiple Choice

If the water in beaker A and beaker B is heated for 5 minutes using the same Bunsen burner, which water in the beaker will show higher temperature?

• A

• B

Multiple Choice

What does the specific heat capacity of water mean?

=4200 J kg^-1°C^-1

• 4200 J heat required for 1 kg of water to raise the temperature by 2 ° C

• 4200 J heat required for 2 kg of water to raise the temperature by 1 ° C

• 4200 J heat required for 1 kg of water to raise the temperature by 1 ° C

Congratulations.

Hope you are understand on the concept of heat capacity.
(at least a little better)