Extensive Properties 

depend on size of sample

examples:mass,volume,weight,length 

Intensive Properties 

do NOT depend on sample size

examples: color,odor,luster,boiling point 

Dalton's Atomic Theory 

1.All matter made up of atoms

2.All atoms identical of same element

3. Atoms not created or destroyed by shmeical reaction

4.Atoms combine in single whole number ratios to form compounds 

Chemical Properties 

Chemical reactions with other substances 

Chemical Change 

Examples: rust, oxidization 

Physical Properties 

mass,volume,density,temperature 

Physical Change 

Does NOT change chemical compostition

examples; vaporization, melting, seperation 

Law of Definite Proportions 

All samples of the same compound always contain the same proprtions by mass of the component elements 

Matter 

anything that occupies space and has mass 

Energy

Capacity to do work and has NO mass 

Homogenous Mixture 

uniform compostion

example: salt water 

Hetrogeneous Mixture 

NOT uniform throughout

Example: sandwich, choclate chunk ice cream 

Law of the Conservation of Mass 

 Mass is not created or destroyed in a chemical reaction

Law of the conservation of Energy 

energy can be converted or transfered but NOT created or destroyed 

Milli 

10-3

1000mg=1g 

deci 

10-1

 10dm=1m

Centi 

10-2

100cm=1m 

Kilo 

10 3

1kg=1000g 

SI UNit for Length

Meter (m) 

SI UNit for  Mass

Kilogram

(Kg) 

SI UNit for  Time

Second

(s) 

SI UNit for  Temperature

Kelvin

(K) 

Celsius to Farenheight 

tc=5/9 (tf-32) 

Farenhight to celsius 

 tf=9/5tc (+32)

Kelvin to Celsius 

tk=tc+273 

Metaloids 

physical properties of a metal, but chmeical properties of a nonmetal 

WHo is responsible for the mass/weight of an atom? 

Protons and Neutrons 

What is the Atomic Number? 

how many protons are in the atom 

What is the Atomic Mass?

The # of protons +the #of neutrons 

What is the Nuclear Charge?

The charge of the nucleaus

(protons) 

What is the atomic charge? 

In a stable molecule it hould be zero.

General Formula for weighted average 

[Mass of isotope 1] x (abundence/100%) +        [Mass of Isotope 2] x (abundence/100%)