States of Matter

Which one of the following is not a property of solids?

• Definite volume

•  They are incompressible

• They do not flow

•  No definite shape

A gas jar filled with bromine gas (more dense than air) was placed over a gas jar containing air as shown on the left.
The gases were allowed to settle for four hours.

Which one of the four sets of gas jars on the right (P, Q, R or S) represents how the two gas jars will look after four hours?

• P

• Q

• R

• S

Study the diagram carefully. It shows the way that the particles of a gas occupies space.
The particles of gas have lots of space and move randomly at high speeds in three dimensions and collide with each other and with their container.
The arrows represent the velocities of the gas particles.
Select the property of a gas from the list below which is consistent with (matches) this micro-view of this state of matter.

• Does not flow

• Can be compressed

• Definite shape

• Definite volume

Which state of matter is represented in the following diagram?

• Gas

• Gas and liquid

•  Solid

• Liquid

Which one of the following is not a property of a gas?

• 1. Definite volume

• No definite shape

• Can be compressed

• Definite mass

Which one of the following is not a property of gases?

• They have no definite shape.

• They can diffuse.

• They have a definite mass.

• They have a definite volume.

When ice melts its particles

• come close together and lose energy.

• move very far apart and gain energy.

• gain energy and begin to move.

• lose energy and begin to move.

The melting point of a substance is the temperature at which it changes from

• a solid to a liquid.

•  a gas to a solid.

• a liquid to a solid.

• a solid to a gas.

When two gases mix together, they are said to

• condense

• evaporate

• melt

• diffuse

An example of a substance that can sublime is

• ice

• dry ice

• carbon

• nitrogen