0725a- C Thru Chemistry

group 2 (continued)

2007-02-02T10:23:00.000-08:00

When an onion is cut, chemical compounds that contain sulphur
are released into the air, reacting with moisture in the eyes forming H2SO4.
People protect their eyes by crying to dilute the acid.

Esters, which are a key factor in the aroma of fruits and flowers,
are often used in perfumes

Insecticides, such as the one shown in this picture,
are inorganic & synthetic chemical formulas considered highly
effective against insects

A medication
is a licensed drug / chemical that is taken
to cure, prevent / reduce the symptoms of an illness.

Soap
is generally a water-soluble sodium (Na) or potassium (K) salt
of fatty acids. The soap-making process is called saponification.

group 2-more

2007-02-01T07:48:00.000-08:00

Result of adding different metal salts to a burning reaction mixture
of potassium chlorate & sucrose.

group 2

2007-01-30T06:53:00.000-08:00

Table Salt/ Sodium Chloride, NaCl
is a colourless or white crystalline compound used in the manufacture
of chemicals & food preservative and seasoning

Petro-chemicals
are derivatives of petroleum & is a mixture of alkanes with some alkenes,
as well as aromatic hydrocarbons
( compounds that have benzene rings in the middle)

Testing testing --J.Y (Group 1)

2007-01-29T06:34:00.000-08:00

Titration Apparatus:

Standard flask

beaker

conical flask

C Thru Chemistry test post

2007-01-21T17:25:00.000-08:00

This is a periodic table.