simple chemistry experiments

Industrially, oxygen is manufactured from the air. The industrial method is based on a very simple principle known as Joule-Thomson effect. Air is first subjected to liquefaction (made liquid) and then to fractional distillation, to separate out oxygen from it. When a gas under pressur..

Physical Quantities and their Measurement - The development of chemistry is based upon the systematic approach of the scientists in carrying out different experiments. Scientific theories, inferences and generalizations are made on the observations recorded. The quantitative inf..

Physical States of Water - Water is the only substance that can exist simultaneously in all the three states of matter, i.e., solid, liquid and gaseous on this earth,. A simple experiment shows the existence of all these three states together. Take a glass half packed with ice c..

Water is the only substance that can exist simultaneously in all the three states of matter, i.e., solid, liquid and gaseous on this earth,. A simple experiment shows the existence of all these three states together. Take a glass half packed with ice cubes and cover it. Th..

Water is the only substance that can exist simultaneously in all the three states of matter, i.e., solid, liquid and gaseous on this earth,. A simple experiment shows the existence of all these three states together. Take a glass half packed with ice cubes and cover it. Th..

Presence of Water Vapour in Air - Ordinary air seems to be dry. It does not cause wetness on our body or clothes. However, you may have some idea about the huge quantity of rain, snow, dew, etc. that gets formed in a year throughout the world. All of it comes only from the air. Thus, the apparent d..

Presence of Carbon Dioxide in Air - Another important constituent of air is carbon dioxide. As stated before, plants use it to synthesize carbohydrates, a basic food for all of us. It is also one of the green house gases that help to retain the warmth of the suns rays on earth, making weather condu..

Separation of the Constituents of Mixtures - Chromatography - Chromatography is a method of separating and identifying various components in a mixture, which are present in small trace quantities. There are several types of chromatography, one of which is paper chromatography. It is extensively use..

In its simplest form, it consists of a cylindrical glass tube about 50 cms long, closed at both ends called the discharge tube (or Crookes tube). The tube is fitted with two metallic electrodes, which are connected to a source of high voltage. It is filled with gas and the discharge tube is connec..

Take hydrated copper (II) sulphate crystals in a test-tube and heat. On heating, the blue crystals in the test tube start turning white. Water vapours are released that condense on the cooler part of the test tube. Collect the water drops in a dish. The crystalline copper sulphate turns to amorpho..