Properties & Definitions
This state has fixed shape and fixed volume.
solid
describe briefly how particles are arranged in a solid
(arrangement and movement)
tightly packed
vibrate in place
puddles disappear
evaporation
When the temperature of a gas increases, the gas particles
move faster
This state has no fixed shape and no fixed volume; it expands to fill its container.
gas
describe briefly how particles are arranged in a liquid.
(arrangement and movement)
close together
slide past each other
water droplets forming on the glass of a cold drink
condensation
A balloon will _____ when it is cooled.
get smaller
This state takes the shape of its container but keeps a fixed volume.
liquid
describe briefly how particles are arranged in a gas
(arrangement and movement)
far apart
move freely/ move in all directions
During freezing, how does particle movement change?
Particles slow down and lock into fixed positions
Describe briefly what gas pressure is
gas particles collide with the walls of the container, which causes gas pressure
The amount of mass per unit volume
density
Explain in one sentence why gases can be compressed according to particle arrangement
far apart
space in between
What happens to gas particles when they touch a cold surface?
(energy,motion)
lose energy
move more slowly,get close together
a sealed contatiner of gas is heated. Explain how it affects gas pressure
(include the word kinetic)
heating increases kinetic energy of particles
move faster
collide with the wall more often and harder
pressure increases
Name two observable properties that help you identify a liquid and two that help you identify a solid.
Liquid: flows, fixed volume
Solid: fixed shape, fixed volume
Explain in one sentence why liquid can flow according to particle arrangement
slide past each other
Define deposition and give one everyday example.
when a gas becomes a solid without becoming a liquid first
e.g. frost forming on a cold surface
Explain how increasing the number of gas particles in a fixed container affects pressure
more particles
collide with the wall more
pressure increases