Separation Lab Agenda  Review  Discuss lab  Begin investigation

F fluorine

O oxygen

selenium Se

N nitrogen

chlorine Cl

S sulfur

P phosphorus

Br bromine

strontium Sr

I Iodine

arsenic As

Ga gallium

aluminum Al

What is a mixture?

Are methods of separation physical or chemical changes?

List 3 physical properties of table salt.

Percent Analysis Date:

Percent Composition Mass of part* 100 Total mass

Percent Error |True - Experimental| * 100 True True

Separation Lab Date:

Physical Properties Tested Previously  Physical state  Texture  Color  Odor  Solubility  Magnetism

Physical Properties  SAND Grainy solid Grainy solid Insoluble in H 2 O Insoluble in H 2 O Brown in color Brown in color  AMMONIUM CHLORIDE Powdery white solid Powdery white solid Soluble in water Soluble in water Sublimes! Sublimes! Solid  gasSolid  gas  SALT Crystalline, solid Soluble in H 2 O White in color  Methods of Separation?

Separation Lab  You must not loose any material (Law of Conservation of Mass).  Measure out sand, salt and ammonium chloride as directed. Divide and conquer Divide and conquer No fire alarms!!! No fire alarms!!!  Quantitative Lab Measure, measure, measure – Be sure it’s cold though! Measure, measure, measure – Be sure it’s cold though!