3. In aqueous solution, molecules having both polar or charged
groups and non polar regions form aggregates called micelles. In a
micelle, polar or ionic heads (hydrophilic) form
an outer shell in contact with
water, while non-polar tails
(hydrophobic) are sequestered
in the interior.
What is Micelle?
30 nm
4. The core of a micelle, being formed of long non polar tails, resembles
an oil or gasoline drop. The length of the non-polar tail, the nature and size of
the polar or ionic head, the acidity of the solution,
the temperature, and the presence of added salts are
the most important factors determining the kind of
the obtained aggregate. If those parameters are
changed, it is possible to change shape and size
of the micelles.
What is Micelle?
7. Passive Voice
subject + auxiliary verb (be) + main verb (past participle)
We use the passive when:
- we want to make the active object more important.
- we do not know the active subject.
8. Example :
The core of a micelle, being formed of long
non polar tails, resembles an oil or
gasoline drop.
Non polar tails are sequestered in
the interior.
13. - Dish soap, because of its bipolar
characteristics (nonpolar on one end and
polar on the other), weakens the chemical
bonds that hold the proteins and fats in
solution.
- The soap's polar, or hydrophilic (water-
loving), end dissolves in water, and its
hydrophobic (water-fearing) end attaches
to a fat globule in the milk.
- The molecules of fat bend, roll, twist, and
contort in all directions as the soap
molecules race around to join up with the
fat molecules.
14. Does the type of milk change the outcome?
Can you do this with other liquids?
Will something other than this soap work?
