Complete the checkpoint on page 7 of your notes Lesson Starter Complete the checkpoint on page 7 of your notes

What’s the matter? Lesson 4

Lesson 4 The particle arrangement in solids, liquids and gases

Particles Everything in the world (solid, liquid and gas) is made up of tiny particles They are too small to see (even with a microscope)

The states of matter Solids, liquids and gases all BEHAVE DIFFERENTLY The way the particles are arranged help explain how the solids, liquids and gases behave

What do we know about solids?

What does this tell you about the particles in a solid? Solids Solids have a fixed shape and do not move on their own What does this tell you about the particles in a solid?

Particles in a solid Particles in a solid are packed tightly together They vibrate closely to the other particles The particle arrangement explains their rigidity, fixed shape and fixed volume

How close are the particles? Particles in a solid Solid Liquid Gas How do particles move? Vibrate closely to other particles How close are the particles? Very close Particle picture

What do we know about liquids?

What does this tell us about the particles in a liquid? Liquids Liquids are runny and can take the shape of their containers What does this tell us about the particles in a liquid?

Particles are in a liquid Particles in a liquid can move over one another into spaces They are close (but not as close as solids) Liquids are not rigid, they have no fixed shape but they do have a fixed volume

How close are the particles? Solid Liquid Gas How do particles move? Vibrate closely to other particles Move over one another into spaces How close are the particles? Very close close Particle picture

What do we know about gases?

What does this tell you about the particles in a gas? Gases Gases have no fixed shape and they can spread out to fill their container What does this tell you about the particles in a gas?

Particles in a gas Particles in a gas move quickly away from one another The particles are spread very far apart Gases are not rigid, they have no fixed shape and have no fixed volume

How close are the particles? Solid Liquid Gas How do particles move? Vibrate closely to other particles Move over one another into spaces Spread out and move away from each other How close are the particles? Very close close Very far apart Particle picture

To be completed for TOMORROW Page 9 in What’s the matter booklet Homework To be completed for TOMORROW Page 9 in What’s the matter booklet