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WorksheetsHEAT KBSM
Total questions: 40
Worksheet time: 49mins
Diagram shows a thermometer. Which modification will increase the sensitivity of the thermometer?
Using a longer capillary tube
Using a glass stem with a thicker wall
Using a bulb with a thicker wall
Using a narrower bore of capillary tube
Diagram shows a heating curve for a solid substance. Heat absorbed to overcome the bonding of molecules at...
P and R
Q and S
R and S
Q and R
Diagram shows a pot of hot rice which is covered with an airtight lid and left to cool. Why is it difficult to lift the lid when the rice is cold?
Water vapour condenses on the lid
The number of air molecules in the pot has decreased
The adhesive force between the water molecules and the lid is strong
The air pressure inside the pot is lower than the atmospheric pressure
Diagram shows a metal spoon immersed in a cup of hot tea. Thermal equilibrium is reached when
Temperature of metal spoon = temperature of tea
Mass of displaced tea = mass of metal spoon
Volume of displaced tea = volume of metal spoon
Specific heat capacity of tea = specific heat capacity of metal spoon
Diagram shows a process of change of state. In which process, A, B, C or D, is latent heat of vaporization absorbed?
A
B
C
D
Specific heat capacity of water is 4200 Jkg-1oC-1. This means that 4200 J Heat energy is required to
Change the temperature of 1 kg of water by 1 oC
Change the temperature of 1 kg of ice by 1 oC
Change 1 kg of water to steam at 100 oC
Change 1 kg of ice into water at 0 oC
Diagram shows how a body temperature of a baby is measured by a doctor. The reading clinical thermometer is taken after a few minute to ensure...
the net rate of heat flow is zero
thermal equilibrium is not occur
amount of heat transfer from baby to clinical thermometer and vice versa is not equal.
Calculate the time taken by a 800 W immersion heater to change 1 kg of ice at 0 oC to water at 60 oC.
(Specific heat capacity of water = 4200 Jkg-1oC-1, specific latent heat of fusion of ice = 3.4 x 105 Jkg-1)
315 s
425 s
740 s
1080 s
Which of the following graph shows the relationship between the volume and absolute temperature of a fixed mass of gas at constant pressure?
Diagram shows the cooling curve of naphthalene. At which stage the substance is in solid state and liquid simultaneously?
MN
NO
OP
MN and OP
Diagram shows a lead block, an iron block and an aluminium block. All the blocks have the same mass and heated with same amount of heat energy in 15 minutes. The specific heat capacity, c, of each metal is different. Which statement is correct at the end of the 15 minutes?
The lead block has the lowest final temperature
The aluminium block has the highest final temperature
The final temperature of the iron block is equal to the aluminium block
The final temperature of the lead block is higher than the iron block
The latent heat of fusion for water is heat absorbed by
1 kg of ice during melting without changes in temperature
1 m3 of ice during melting without changes in temperature
1 kg of water to increase the temperature by 1 °C
1 m3 of water to increase the temperature by 1 °C
How much heat is needed to be supplied to change 500 g of ice block at 0 °C to water at 0 °C? [Specific latent heat of fusion = 3.36 X 105 J kg-1 ]
6.72 X 102 J
1.68 X 105 J
6.72 X 105 J
1.68 X 108 J
At night, land cools down faster than sea. Which statement explains the situation?
Solid releases heat faster than liquid
Sea absorbs heat more than land during night
The breeze blows from the sea to the land during night
Specific heat capacity of sea water is greater than land
Diagram shows an apparatus set-up to determine the specific heat capacity, c, of an aluminium block. Which step is cannot increase the accuracy of c?
Wrap the aluminium block with cotton
Put the aluminium block on a polystyrene sheet
Cover the top of the aluminium block with aluminium foil
Pour some lubricating oil into the hole where the thermometer is inserted
Diagram shows 100 g of water at 20 oC is poured into a beaker containing 200 g of water at 80 oC. What is the final temperature of the mixture?
30 oC
50 oC
60 oC
70 oC
The temperature of 5 kg of water rises by 50 0C when heated. What is the temperature rise when 8 kg of water is heated by the same amount of heat energy?
20.75 0C
31.25 0C
40.00 0C
80.00 0C
The specific heat capacity of aluminium is higher than copper. When heat is supplied at the same rate to two identical blocks of same mass, which of the following happens?
the copper block will get heated up faster
the aluminium block will get heated up faster
the aluminium block will expand faster than copper block
the rate of temperature rise in the aluminium block is higher
Diagram shows the temperature against time graph for 600 g of liquid X that is heated by a 100 W electric immersion heater. Determine the specific heat capacity of liquid X in J kg-1oC -1.
20
60
1200
2000
Who is this?
Pikachu
Doraemon
Naruto
Son Goku
Table shows the specific heat capacity for materials R, S and T. Which of the following pairs is most suitable for making the base and the handle of the frying pan?
Base of the frying pan= R
Handle of the frying pan = T
Base of the frying pan= T
Handle of the frying pan = R
Base of the frying pan= S
Handle of the frying pan = T
Base of the frying pan= T
Handle of the frying pan = S
Diagram shows a process in which ice change to water. The heat absorbed during the process is to...
separate the molecules in the ice so that they are free to move.
increase the kinetic energy of the ice molecules.
increase the temperature of the water.
Diagram shows the variation of temperature with time when a solid X is heated. What is the state of X from the time t1 to t2?
Solid only
Liquid only
Liquid and gas
Solid and liquid
Blisters on the skin caused by steam are more severe than blisters caused by boiling water because steam has
a higher temperature.
a higher specific heat capacity
a higher specific latent heat of vaporisation.
Diagram shows the size of a balloon which is in an air tight container before and after the piston is pulled upwards. Which of the following physics law is able to explain the situation in Diagram?
Pressure law
Charles’ law
Boyle’s law
The air pressure in a car tyre is 200 kPa at a temperature of 25°C. What is the air pressure in the tyre at a temperature of 37°C?
[Assume the volume of the air in the tyre is constant]
135 kPa
190 kPa
192 kPa
208 kPa
Diagram shows the same balloon before and after it was placed in a refrigerator for an one hour. The situation above can be explained by
Boyle’s law
Charle’s law
Pressure law
Diagram shows 20 g of milk at temperature 10 oC being poured into a glass containing 50 g of coffee at temperature 60 oC. What is the final temperature of the mixture?
Between 20 oC and 70 oC
Between 5 oC and 30 oC
Between 5 oC and 70 oC
Between 10 oC and 60 oC
When the gas in air-tight container is compressed, what will remain unchanged?
The gas pressure.
The number of particles.
The average kinetic energy of the particles.
The frequency of collisions between the particles and the walls.
How many triangles?
9
11
13
15
Diagram shows a metal block of mass 4.0 kg and specific heat capacity of 500 J kg-1 oC -1. What is the increase in temperature after the heater has been switched on for 15 seconds?
0.6
0.8
7.5
5.0
The specific heat capacity of aluminium is 900 J 𝑘𝑔−1 °𝐶 −1 . Which statement explains the specific heat capacity of aluminium correctly?
1kg of aluminium absorbs 900 J of heat energy during heating.
The temperature of 1kg of aluminium will rise by 1 °C when it absorbs 900 J of heat energy.
The temperature of 1 kg of aluminium will drop by 1 °C when it absorbs 900 J of heat energy.
Aluminium requires 900 J of heat energy to increase its temperature by 1°C.
Diagram shows ice cream melting. The heat absorbed during the process is
Latent heat of fusion
Heat capacity of solid
Latent heat of vapourisation
Heat capacity of liquid
Diagram shows a man sits near a cam fire in an igloo to warm up his body. What will happen when thermal equilibrium is achieved?
The body temperature is increases
The air temperature inside the igloo will decrease
Net heat flow form the air inside the igloo to the man's body.
No net heat flow form the air inside the igloo to the man's body.
Diagram shows a balloon filled with water is brought to the burning candle. The balloon does not blow up even when it touches the flame. Which statement is correct to explain this situation?
Water is a good heat conductor
Balloon is a god heat conductor
Water has high specific heat capacity
Balloon has low specific heat capacity
Diagram shows the temperature-time graph substance P with a mass of 0.025 kg which is heated using 100 W heater. What is the specific latent heat of fusion of substance P?
1.6 x 105 Jkg-1
2.0 x 105 Jkg-1
3.2 x 105 Jkg-1
3.6 x 105 Jkg-1
An extreme desert-crossing race started before dawn at temperature of 2 oC. The pressure in each tyre of the vehicle is 3.8 x 105 Pa
1.69 x 104 Pa
3.29 x 105 Pa
4.39 x 105 Pa
8.55 x 105 Pa
Three types of liquid A, B and C of equal mass are heated at a constant rate. Diagram shows the temperature-time graph of the three liquids. Which liquid A, B, or C has the largest specific heat capacity?
A
B
C
Diagram shows the heating curve of a substance using a constant rate of heat supply. Which statement is correct?
Heat is released to the surrounding at QR
At RS, the substance exists in two states
The kinetic energy does not change at PQ
Heat is used to break up the bonds between the particles at QR
Who's among the following represents Malaysia?
