Chemistry

This lecture briefly observe 7 reactions to identify and write formulas for the reactants and products of those reactions. Here also balance the equations for the reactions.…

General purpose of this lecture is to present on Rocks and Weathering Rock Cycle. For thousands, even millions of years, little pieces of our earth…

Major objective of this lecture is to present on Rocks. There are 3 types of rocks: Igneous, metamorphic and sedimentary. Some rocks have air bubbles because of the way…

Prime purpose of this lecture is to present on Sugar Refining Process in mills. In tropical regions where sugar cane is grown, sugar cane is partially refined…

Basic objective of this lecture is to present Noble Gases. Group 18 elements are called the noble gases.  This is because they rarely combine with other elements…

General objective of this lecture is to present on Rates of Reactions and Enzymes. Enzymes are biological catalysts. They help the reactions that occur in…

Polymer is a long molecule made up from lots of small molecules called monomers. This lecture briefly present on structure and properties of Polymers. This lecture…

About 7% of all household waste is plastic. Annually, 3 million tonnes of plastic rubbish are produced. 57%  of litter found on beaches is plastic. In 2001 only…

Prime purpose of this lecture is to present on Elements, atoms, ions, and the periodic table. Electrons are involved in bond formation when compounds are formed. So…

This lecture briefly focus all Periodic Table of the Elements.  The periodic table we use today is based on the one devised and published by Dmitri…

Basic purpose of this lecture is to present on Families on the Periodic Table. Families may be one column, or several columns put together. Columns are also grouped…

In 1869 the Russian chemist Dmitri Mendeleev and the German chemist J. Lothar Meyer, working independently, found that when the elements were arranged in order…