STATES OF STATES OF MATTERMATTER

• WHAT ARE THE 4 STATES OF MATTER?• WHAT ARE THE TWO TYPES OF SOLID?• HOW DO MOLECULES MOVE IN SOLIDS, LIQUIDS,

AND GASSES?

PHASES VS STATES

Phase = a region where all matter has the same physical propertiesState = One of the forms that matter can take

SOLIDSOLID

•definite shape & volume

•Molecules/atoms • move slow• strongly attracted to each other

2 TYPES OF SOLIDS:

Crystalline – molecules in order

• Example: salt, sugar, snow, ice, diamond

Amorphous – molecules are random

• Example: rubber, plastics, wax

LIQUID

•definite volume

•no definite shape

•Molecules/atoms • move fast• weakly attracted to each other.

VISCOSITYVISCOSITY

Attraction between molecules in a liquid

•physical property•High = Sticky

GASGAS

no definite shape or volume

Molecules/atoms

•move very fast

• very weakly attracted to each other

• Gases are free flowing

PRESSUREPRESSURE

Pressure

When a gas fills a container, it pushes against the sides of the container.

Temperature, mass, and volume affect pressure

PLASMAPLASMA

Superheated ionized gas• Stars • Lightning• Neon signs

Similar properties to gas

Conducts electricity very well