States of Matter, States of Matter

solid

The particles are tightly packed.

The particles do not move around.

liquid

The particles are close together.

The particles move, and slide past each other.

gas

The particles are very separated.

The particles move quickly.

condensation

Gas to liquid:

(Dew on grass)

evaporation

Liquid to Gas:

(Puddles disappearing)

melting point

Solid to liquid:

(Ice to water)

freezing point

Liquid to solid:

(Water to ice)

Liquid

can be poured and take on the shape of their container. Has mass and volume.

Evaporation

the change of a liquid to a gas

Matter

anything that takes up space and has mass

Particles

Tiny atoms or molecules that make up all matter

atoms

basic particle from which all elements are made

element

cannot be broken down into any other substance

molecule

2 or more atoms bonded (same or different)

matter

anything that has mass and takes up space

physical change

a change of matter from one form to another without a change in chemical properties

chemical change

A change in matter that produces one or more new substances

A car rusting is an example of what type of change?

chemical change

liquid water to water vapor (gas)

physical change

Density

Mass/Volume

Mass

density x volume

Volume

The amount of space an object takes up

Sublimation

the process in which a solid changes directly into a gas

heat energy

a form of energy that is transferred by a difference in temperature

Temperature

A measure of the average energy of motion of the particles of a substance.

conduction

Form of heat transfer where heat energy is directly transferred between molecules through molecular collisions or direct contact.

water vapor

water in the form of a gas

adhesion

force of attraction between different kinds of molecules

Cohesion

Attraction between molecules of the same substance

molecular motion

the movement of molecules in matter