1.1- 1.3 Solids Liquids Gases

reverse reaction

The ________ also happens and is called deposition or desublimation.

Liquids

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

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.

reverse

This is the ________ of melting and occurs at exactly the same temperature as melting, hence the melting point and freezing point of a pure substance are the same.

Zig Zag

The particles follow a(n) ________ path because they are being struck by tiny invisible particles.

Condensation

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

significant decrease

Requires a(n) ________ in temperature (or loss of thermal energy) and occurs at a specific temperature.

low density

Gases have a very ________.

regular pattern

The particles are packed very closely together in a fixed and ________.

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.

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