Are you good enough for it? 2/2/13

Group Activity- Are you good enough for it ?

Question : How do you separate mixture of  iron filings , iodine ( sublime when heated) , copper Sulfate (ll) , Calcium Sulfate , Ammonium chloride ( sublimes when heated ) and Lead (ll) bromide

suggested answer from mr foo's slides:

Element, Compound & Mixture 

(Answer Techniques)

Nitrogen Atoms

Element:

• This diagram shows a element
• REASON: (type of element) atoms combined to form diatomic molecules.

Mixture: 

Mixture of elements:
____ and ___ are not chemically combined

Mixture of molecules:
two elements are in the form of diatomic molecules but are not  chemically combined with one another

Mixture of 2 different compounds made up of the same elements:
same constituent elements in different ratio.

Mixture of 2 different compounds :
two different compounds that are not chemically combined with one another

Compound:

( pure) compound:
two different types of element chemically joined together in a fixed ratio.

*pure compound: A pure compound is a substance composed of a specific molecule or formula unit composed of 2 or more elements that cannot be broken down physically.


Separation Technique Assignment 1 for test !