Topic 2

Question 1

What are the properties of solids?

Answer 1

1)Solids- There are sting forces of attraction between particle, which hold them in fixed positions in a regular lattice arrangement,
2) The particles don’t move from their positions, so all solids keep a definite shape and volume.
3) The particles in a solid don’t have much energy.
4) They hardly move at all- in fact they can only vibrate about their fixed positions. The hotter the solid becomes, the more
the vibrate

Question 2

What are the properties of liquids?

Answer 2

1) There is some force of attraction between the particles. They’re free to move past each other, but they do tend to stick together,
2) Liquids don’t keep a definite shape and will flow to fill the bottom of a container, but they do keep the same volume.
3) For any given substance, in the liquid state it’s p[article will have more energy than in the solid state (but less energy than in the
4) The particle are constantly moving with random motion. The hotter the liquid gets the faster they move. This causes the liquid to expand
slightly when heated.

Question 3

What are the properties of gases?

Answer 3

1) There’s next to no force of attraction between the particles- they’re free to move. They travel in straight; lines and only interact when they collide.
2) Gases don’t keep a definite shape or volume and they will always fill any container. When particles bounce off the walls if a container they exert a pressure on the walls.
3) For any given substance, in the gas state its particles will have more energy that in the solid or liquid state.
4) The particles move constantly with random motion. The hotter the gas
gets, the faster they move, Gases either expand when heated or their pressure increases