In a chemical reaction, one or more reactants is converted
to one or more products.
In this chapter we discuss three aspects of chemical
(a) mass relationships (stoichiometr
The study of
and the changes it
Chemistry is the study of matter.
Matter is anything that has mass and takes up space.
Matter can change from one form to another.
In a chemical change (chemical reaction), su
A main challenge of chemistry is to
understand the connection between the
macroscopic world that we experience and the
microscopic world of atoms and molecules.
You must learn to think on the atomic level.
Classification of Matter
In 1916, Gilbert N. Lewis pointed out that the lack of
chemical reactivity of the noble gases indicates a high
degree of stability of their electron configurations.
Lab partner: Sadiqua Arzoi
Equivalent Weight of Metal
21th April 2015
Objective: Calculating the equivalent weight of metal.
The equivalent weight of a substance is that weight of the substance that releases or combines
Lab Partner: Sadiqa Arzoi
Preparation of an Alum
03 March 2015
Objective: Preparation alum from aluminum foil, sulfuric acid and potassium hydroxide.
Alum is a known as an industrial chemical that has been used to manuf
Lab partner : Sadiqua Arzoi
17th March 2015
Objective: Electrolytes , testing for strong, weak or non-electrolytes.
Just as solid material that conduct electricity are call conductor and non- conductors cal