(178) GCSE Chemistry Revision "The Three States of Matter"

What are the three common states of matter?

Solids, liquids, and gases.

How are the particles arranged in solids?

Particles are packed together in a regular pattern with almost no spaces between them.

Why can solids not flow from place to place?

Solids have a fixed shape and their particles can only vibrate, but cannot move freely.

What distinguishes liquids from solids in terms of particle movement?

Particles in liquids can move and liquids take the shape of their container.

How are the particles arranged in gases?

Particles in gases are widely spaced and move quickly and randomly.

What happens to a solid when it is heated?

It melts and changes into a liquid.

What is the term for the process of a liquid turning into a gas?

Boiling.

What is condensation?

The process of a gas cooling down to become a liquid.

How does the strength of forces of attraction between particles affect melting and boiling points?

Stronger forces of attraction result in higher melting and boiling points.

What is the limitation of the simple particle model regarding particle shape?

The model assumes all particles are solid spheres, which is incorrect.

How does the simple particle model fail to represent forces between particles?

It assumes that there are no forces between the particles, which is not true.