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Friday, 17 May 2013
Sunday, 12 May 2013
CHEMIST!
Chemist
Learn interesting facts and information about a range of science jobs and careers.
What is a chemist? What do they do as part of their job? Read our job description facts and information to find out the answers to these questions and more while learning all about chemistry careers.
Chemists study various chemical elements and compounds, their properties and how they work together in our bodies and the world around us.
Specialist...
Friday, 10 May 2013
ESTERS
Esters are chemical compounds consisting of a carbonyl adjacent to an ether linkage. They are derived by reacting an oxoacid with a hydroxyl compound such as analcohol or phenol. Esters are usually derived from an inorganic acid or organic acid in which at least one -OH (hydroxyl) group is replaced by an -O-alkyl (alkoxy) group, and most commonly from carboxylic acids and alcohols. That is, esters are formed by condensing an acid with an...
NATURAL RUBBER
Natural rubber, also called India rubber or caoutchouc, as initially produced, consists of suitable polymers of the organic compound isoprene with minor impurities of other organic compounds plus water. Forms of polyisoprene that are useful as natural rubbers are classified as elastomers. Currently the rubber is harvested mainly in the form of the latex from certain trees. The latex is a sticky, milky colloid drawn off by making incisions into...
How To Become Excellent Student?
Steps
1
Like all exceptionally great students, you must pay attention! When a teacher is giving a lesson, take notes and if you don't understand something, raise your hand and ask questions. The more questions you ask, the smarter you'll get, believe it or not. By passing notes and talking to friends, you won't learn anything, so pay close attention!
2
Review your notes when you have free...
Thursday, 9 May 2013
FATS AND OILS
Fats consist of a wide group of compounds that are generally soluble in organic solvents and generally insoluble in water. Chemically, fats are triglycerides,triesters of glycerol and any of several fatty acids. Fats may be either solid or liquid at room temperature, depending on their structure and composition. Although the words "oils", "fats", and "lipids" are all used to refer to fats, in reality, fat is a subset of lipid. "Oils" is usually...
DOES OIL COMES FROM DINOSOURS?
By Anne Marie Helmenstine, Ph.D.,
The notion that petroleum or crude oil comes from dinosaurs is
fiction. Surprised? Oil formed from the remains of marine plants and
animals that lived millions of years ago, even before the dinosaurs. The
tiny organisms fell to the bottom of the sea. Bacterial decomposition
of the plants and animals removed most of the oxygen, nitrogen,...
Silly Putty
Here is an interesting activities that you can do at home. Silly putty can be made with common household objects, and is a great chemistry experiment to do with starch. Enjoy it!
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