Topic 1 - States of Matter Flashcards
what are the three states of matter?
solid, liquid, gas
what does the state of matter depend on?
how strong the forces of attraction are
what does the strength of forces of attraction depend on?
material, temperature, pressure
what are the forces of attraction in solids?
strong
how are particles arranged in solids?
regular lattice arrangement
why do solids take a definite shape and volume?
particles dont move from their positions
what happens when a solid becomes hotter?
particles vibrate about their positions, vibrating more the hotter they become
what are the forces of attraction in liquids?
weak
how are particles arranged in liquids?
randomly arranged and free to move past each other, but stick together
do liquids take a definite shape and volume?
liquids have a definite volume but don’t keep a definite shape. they will flow to fill the bottom of a container.
what happens when a liquid gets hotter?
particles are constantly moving with random motion. the hotter it gets the faster they move.
what are the forces of attraction in gases?
very weak
how are particles arranged in gases?
particles are far apart and free to move. they travel in straight lines
do gases take a definite shape and volume?
no, they will fill any container
what happens when a gas gets hotter?
particles move constantly with random motion. the hotter it gets, the faster they move.
