Particulate Nature of Matter Grade 7

Which of the following is a characteristic of solids?

• Solids have a definite shape and volume.

• Solids can flow and change shape easily.

• Solids have no definite shape or volume.

• Solids can expand to fill any container.

Which state of matter has particles that are closely packed but can move around each other?

• Solid

• Gas

• none of them

• Liquid

Which of the following is true about the particles in a gas?

• They are close together and slide past one another.

• They are spread out and move freely in all directions.

• They are tightly packed and vibrate in place.

• They are fixed in place and cannot move.

How do the particles in a liquid behave?

• They are tightly packed and do not move.

• They are spread out and move freely.

• They are loosely arranged and move freely like gas particles.

• They are tightly packed but can slide past each other.

Which state of matter takes the shape of its container but has a definite volume?

• Solid

• Liquid

• Gas

• None of them

What happens to the shape of a solid when it is heated?

• It takes the shape of the container.

• It gets colder.

• It does not change shape.

• It expands and may melt.

Which characteristic is true for gases?

• Gases have a fixed shape and volume.

• Gas particles are tightly packed and vibrate.

• Gases expand to fill the shape and volume of their container.

• Gas particles cannot move freely.

What property is shared by both liquids and gases?

• Both can flow and take the shape of their container.

• Both have a definite shape.

• Both have fixed volumes.

• Both have particles that are tightly packed.

Which one is solid?

• A

• B

• C

What is C?

• Solid

• Gas

• Liquid