Properties of
Matter
Particle Behavior
Changes of State
Real-Life Examples
particle theory
100

What state of matter has a fixed volume but no fixed shape?

Liquid

100

In which state of matter do particles vibrate but stay in a fixed structure?

Solid 

100

What is the term for the change from solid to liquid?

Melting 

100

When you pour water into a cup, why does it take the shape of the cup?

Because it’s a liquid and has no fixed shape

100

True or False: Cooking smells spreading in a room is an example of particle movement.

True

200

Describe how particles in a gas are arranged compared to those in a liquid.

Particles in a gas are spread out and move freely, while particles in a liquid are close together but can still move around each other.

200

Describe the motion of particles in a liquid.

Particles are close together but can move around each other, allowing the liquid to flow.

200

What change of state occurs when a liquid becomes a gas?

Evaporation or boiling 

200

Why do gases fill any container completely?

Gas particles move freely and spread out to occupy all available space.

200

What does the particle theory of matter suggest about the motion of particles?

Particles are in constant, random motion.

300

Which state of matter has both a fixed shape and a fixed volume?

Solid

300

How does the arrangement of particles in solids differ from those in liquids?

In solids, particles are tightly packed in a fixed structure, whereas in liquids, they are close but can move around each other.

300

When you leave a glass of water out, some of it eventually disappears. What change of state is happening?

Evaporation 

300

When you open a bottle of perfume, why can you smell it across the room?

The particles in the perfume vapor move freely and spread out, filling the room.

300

How do particles behave in a gas compared to a liquid?


Gas particles move rapidly in all directions, while liquid particles move more slowly and slide past one another.