Free Printable C4 Heat

Worksheets

C4 Heat

Total questions: 22

Worksheet time: 35mins

Name

Class

Date

$13.3\degree C$

$23.3\degree C$

$51.4\degree C$

$43.3\degree C$

You leave your cold spoon in a hot bowl of oatmeal. What happens after an hour?

The temperature of both the oatmeal and the spoon stay the same

The spoon and the oatmeal become the same temperature

Only the temperature of the oatmeal will change

Only the temperature of the spoon will change

Two objects, V and W, touching each other. The initial temperature of V and W are 90°C and 80°C respectively.
Which statement is correct when V and W are at thermal equilibrium?

Net rate of heat flow between V and W is zero

Rate of change in temperature of V is bigger then that of W

Temperature of V is higher than W

The quantity of heat in V is the same as in W

13.3 cm

14.5 cm

15.7 cm

15.2 cm

A piece of silver is heated to 87.36 ^oC and dumped into a calorimeter containing 65.86 g of water at a temperature of 24.03 ^oC. Calculate the mass of this silver sample if the final temperature of the silver and water are 28.69 ^oC.

(c_silver = 235 J kg^-1oC^-1)

(c_water = 4200 J kg^-1oC^-1)

0.0123 kg

0.0935 kg

93.500 kg

14819 kg

The temperature of an unknown piece of metal with a mass of 30 g changes from 25 °C to 35 °C when the metal absorbs 350 J of energy. What is the specific heat capacity of the metal?

1166.7 J kg^-1°C^-1

1.17 J kg^-1°C^-1

1000 J kg^-1°C^-1

0.857 J kg^-1°C^-1

20 g of water. specific heat of water is 4200 J kg^-1°C^-1. temperature changes from 25° C to 20° C, how much heat energy (Q) moves from the water to the surroundings?

418 J

430 J

420 J

42000 J

Copper, Stainless Steel, Carbon Steel, and Zinc were all heated using the same thermal energy. What material would be the coolest after being heated?

Copper

Carbon Steel

Zinc

Stainless Steel

Which material heats up quickest?

Aluminium

Concrete

Diamond

Glass

Water

10.

Consider the following temperature-time graph when a solid is heated. which part of the graph involves latent heat of vaporization?

Part I

Part II

Part III

Part IV

11.

How much energy is required to change 2600 g of water at 100 $\degree$ C into steam temperature? (specific latent heat of vaporization is 2.26 x $10^6$ $J\ kg^{-1}$ )

Q = 5.9 X $10^6$ J

M = 5.9 X $10^6$ J

C = 5.9 X $10^6$ J

$\Delta$ T = 5.9 X $10^6$ J

12.

The graph shows the cooling curve of a substance. At which stages the specific latent heat released?

AB and CD

BC and DE

AB and EF

BC and CD

13.

Latent heat is

the heat absorbed or released at a boiling process during a change of phase

the heat absorbed or released at a constant temperature during a change of phase

the heat absorbed or released at a constant temperature during a change of phase of 1 kg object

the heat absorbed or released by an object to increase or decrease its temperature by 1 degree Celcius

14.

You have a gas that has a pressure of 2 × 10⁵Pa and a volume of 1000 cm³. What would be the new volume if the pressure was changed to 1 × 10⁵Pa?

5 000cm³

2 000 cm³

It would stay at 10 cm³

1 cm³

15.

Consider a sample of oxygen gas at 27° C with a volume of 9550 cm³ at constant pressure. The gas is heated to 125° C. What’s the new volume?

12670 cm³

4600 cm³

15917cm³

1600 cm³

16.

If I have 5600 cm³ of gas in a piston at a pressure of 1.5 × 10⁵Pa and compress the gas until its volume is 4800 cm³, what will the new pressure inside the piston be?

1.75 × 10⁵ Pa

1.8 × 10⁵ Pa

1.3 × 10⁵ Pa

1.29 × 10⁵ Pa

17.

A gas at 928 kPa at a temperature of 129 °C. Calculate the temperature at 645 kPa.

6.41 °C

279 °C

89.66 °C

34.56 °C

18.

When a cold tire is inflated to a certain pressure and then is warmed up due to friction with the road, the pressure increases. This happens because the

air molecules hit the walls of the tire less frequently

rubber in the tires reacts with oxygen in the atmosphere

air molecules speed up and collide with the tire walls more often

air molecules diffuse rapidly through the walls of the tire.

19.