Archive for April, 2013

Information on Mixtures|Solution, Suspension and Colloid

April 29, 2013
Information on Mixtures|Solution, Suspension and Colloid

Have you ever mixed salt (NaCl) in water (H2O)?  Do you think a chemical reaction has taken place due to mixing these two substances together?  Then, what has happened?  What is this salt-water known as?  Can the salt be separated from the water again?  After mixing the two substances, write down all your observations....
Read more »

Tags: , ,
Posted in CBSE Topics | No Comments »

Laws of Chemical Combination

April 24, 2013
Laws of Chemical Combination

The laws of chemical combination, just like the laws of physics, have helped explain the phenomenon of the vast array of chemical combinations that make up the multitude of chemical compounds on earth.  Write down various chemical combinations or reactions that come to your mind and study them.  They all follow the laws of...
Read more »

Tags: ,
Posted in CBSE Topics | No Comments »

Acids and Bases|A Short Introduction

April 17, 2013
Acids and Bases|A Short Introduction

Can you look around and identify a few substances which you think are acidic or basic?  Is baking soda acidic or basic?  What about lime juice?  Lime juice tastes sour.  What is the reason behind it?  Write down what all comes to your mind regarding acids and bases and let us discuss about this...
Read more »

Tags: ,
Posted in CBSE Topics | No Comments »

The Lungs and the Respiratory System

April 10, 2013
The Lungs and the Respiratory System

Every moment of our lives from the beginning to the end reverberates with our breath.   “For breath is life, and if you breathe well, you will live long on earth,” is a Sanskrit proverb which captures the essence of the important role that breathing plays in our lives.  Let us briefly look at the...
Read more »

Tags: , , ,
Posted in CBSE SYLLABUS, CLASS 11 | No Comments »

The Human Heart and the Circulatory System

April 1, 2013
The Human Heart and the Circulatory System

You may have drawn little hearts on your cards to express your love for your parents or dear ones.  When you exert yourself, you must have felt your heart beat a little faster.  The human heart and the circulatory system are of utmost importance as they ensure that blood carrying life-sustaining oxygen as well...
Read more »

Tags: , ,
Posted in CBSE Topics | No Comments »