1.1- 1.3 Solids Liquids Gases

He saw particles from the pollen jiggling around, They were not alive

so why were they moving

The color spreads through the water, because the particles leave the solid crystal

it dissolves and spread among the water particles

Liquids

\________ also have a fixed volume but take the shape of the container.

Condensation

\________ occurs when a gas changes into a liquid on cooling and it takes place over a range of temperatures.

Solid Changes

Melting is when a(n) \________ into a liquid.

Evaporation

\________ occurs only at the surface of liquids where high energy particles can escape from the liquid's surface at low temperatures, below the b.p.

Solids

\________ have a fixed volume and shape and they have a high density.

Low density

Gases have a very \________.

Smells

The \________ are due to tiny particles, which spread because they are by born added by the particles in air, kind of like diffusion.

Gaseous Particles

The pressure that a gas creates inside a closed container is produced by the \________ hitting the inside walls of the container.

Thermal energy

When substances are heated, the particles absorb \________ which is converted into kinetic energy.

Kinetic Energy of Particle

Increase in temperature\= increase in \________\= increase in movement of particles.

Evaporation

\________ occurs when a liquid changes into a gas and occurs over a range of temperatures .

Gaseous particles

\________ are in constant and random motion.