KMT chem notes

What is the kinetic molecular theory?

Particles are always in motion

How do gas particles move?

Fast in straight lines

What are gas collisions like?

Elastic (no energy lost)

What increases gas pressure?

More collisions or smaller volume

How does temperature affect gas particles?

Higher temp = faster particles

Do gases have attractive forces?

No

Why are gases compressible?

Lots of empty space

What is diffusion?

Gases mix naturally

What is effusion?

Gas escaping through a tiny hole

Which gases move faster?

Lighter gases

Do liquids have definite volume?

Yes

Do liquids have definite shape?

No

How do liquid particles move?

Slide past each other

Are liquids dense?

Yes, much denser than gases

Are liquids compressible?

Slightly

What is surface tension?

Particles pull together at surface

What is capillary action?

Liquid moves up a surface

What is evaporation?

Liquid to gas at surface (cooling)

What is boiling?

Gas forms throughout liquid

How do solid particles move?

Vibrate in place

Are forces strong in solids?

Yes

Do solids flow?

No

What is a crystalline solid?

Ordered structure

What is an amorphous solid?

No regular pattern

Which solids have highest melting points?

Covalent network solids