Soaps and Detergents
Bathing soap and
washing detergents are kinds of soaps which we use in our daily life. In
addition to this, we are using wash powder to remove strong stains on the
clothes.
The detergent
molecules have two sides, one side water loving, other water hating.
Water hating goes and joins with dirt and oil in the cloth while the
water loving joins with the water molecules.
When you agitate
the cloth the dirt is surrounded by many molecules and is taken away from the
cloth. The cloth becomes clean, and the dirt surrounded by the detergent
molecules float in the water making it dirty.
We can prepare our
own soap by the following activity.
Activity 2: Preparation of Soap
Materials
Required: 35 ml of water 10
g. of Lye (Sodium hydroxide) 60 ml of coconut oil.
Process
: Cover your work area with old
newspaper. Take 35 ml of water in a jar. Add 10 gram of concentrated sodium
hydroxide and allow it to cool.
Then
add 60 ml of coconut oil drop by drop and stir it well. Pour that solution into
an empty match box, soap can be obtained after getting dried.
Try
this soap to wash your handkerchief.
Different soaps for
different purposes are prepared with various raw materials. We can understand
this by doing the following activity.
Activity 3: Collect various kinds of soap’s wrapper. Complete the
following table based on the information provided in the wrapper.
Inference: Nature of the soaps varies according to its constituents.
CHEMISTRY IN EVERY DAY LIFE
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