Properties of Matter Part II

Published on: Mon Feb 07 2011

Solid to Gas = Sublimination
Gas to Solid = Deposition

The primary difference between states of matter is the molecular structure.

A phase diagram shows how if pressure and temperature is varied, matter will be solid, liquid or gas.

Element + Element = mixture

If a chemical reaction takes place in the mixture it becomes a compound.

Physical properties can be observed without changing. For example: Density, luster, hardness, color, state

Chemial properties can only be observed when the matter is reacting with another substance.

Intensive property: scale invariant (color)
Extensive property: varies w/ amount (mass)

The ratio of 2 extensive quantities that scale in the same manner is an intensive property. ie density = mass/volume.

Measurement and Units:

Accuracy: How close to the true value
Precision: How well can be repeated