Y11 Phys L11 Particle theory

The diagram shows a cuboid block made from a metal of density 2.5g/cm³. What is the mass of the block?

• 8.0 g

• 16 g

• 50 g

• 100 g

A cup contains hot liquid. Some of the liquid evaporates. What happens to the mass and what happens to the temperature of the liquid in the cup?

• Mass decreases and temperature decreases

• Mass stays the same and temperature decreases

• Mass decreases and temperature stays the same

• Mass stays the same and temperature stays the same

Air in a sealed syringe is slowly compressed by moving the piston. The temperature of the air stays the same. Which statement about the air is correct?

• The pressure of the air decreases because its molecules now travel more slowly.

• The pressure of the air decreases because the area of the syringe walls is now smaller.

• The pressure of the air increases because its molecules now hit the syringe walls more frequently.

• The pressure of the air increases because its molecules now travel more quickly.

A block with flat, rectangular sides rests on a table (1).

The block is turned so that it rests with its largest side on the table (2).

How has this change affected the force and the pressure exerted by the block on the table?

• Force decreases, pressure decreases

• Force decreases, pressure unchanged

• Force unchanged, pressure decreases

• Force unchanged, pressure unchanged

The gas in a container is heated but is kept at constant volume. Why does the gas pressure increase?

• The molecules expand.

• The molecules increase in mass.

• The molecules move further apart.

• The molecules move more rapidly.

A solid is heated from room temperature. The graph shows how its temperature changes with time as it is heated constantly. At which time has it just become completely liquid?

• A

• B

• C

• D

Diagram 1 shows a measuring cylinder containing water.

Diagram 2 shows the same measuring cylinder and water after 10 identical solid glass spheres have been added.

The mass of one of the spheres is 10g.

What is the density of the glass from which the spheres are made?

• 0.25g/cm³

• 0.40g/cm³

• 2.5g/cm³

• 4.0g/cm³

In which of the following tubes is the pressure at the bottom the highest?

• X

• Y

• Z

• All have the same pressure

A drawing pin can easily be pushed into a wall because it has

• A large surface area so it causes a small pressure

• A small surface area so it causes a large pressure

• A large surface area so it causes a large pressure

• A small surface area so it causes a small pressure

Where is the pressure greater in the swimming pool shown in the image?

• A

• B

• C

• D