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Chemistry

Methods Of Separation Of Substances Under Wet Conditions

December 26, 2020 by Veerendra

Methods Of Separation Of Substances Under Wet Conditions Some solid particles are insoluble in water. For example chalk powder, dust particles, sand, and tiny pieces of straw are insoluble in water. To separate this type of particles generally we use the following methods Sedimentation and Decantation Have you seen pulses being washed in your home? When pulses are kept in a … [Read more...] about Methods Of Separation Of Substances Under Wet Conditions

Methods Of Separation Of Substances Under Dry Conditions

December 26, 2020 by Veerendra

Methods Of Separation Of Substances Under Dry Conditions 1

Methods Of Separation Of Substances Under Dry Conditions Different methods are used for separating different substances that are mixed together such as handpicking, threshing, winnowing and sieving. Threshing Grains or seeds of plants like rice and wheat serve as sources of food. The flour (atta) that is used for making chapattis is made from wheat grains. After these crops … [Read more...] about Methods Of Separation Of Substances Under Dry Conditions

What Is A Solution And How Does It Relate To Solubility

December 24, 2020 by Veerendra

What Is A Solution And How Does It Relate To Solubility 1

SOLUTION AND SOLUBILITY When some salt is added to water and stirred, the salt disappears. This is because the salt has dissolved in the water. Dissolving is a change where substances mix completely with the liquid they have been added to. Not all substances dissolve in water. Only some substances like salt and sugar, dissolve in water and are known as soluble substances. … [Read more...] about What Is A Solution And How Does It Relate To Solubility

What Are The Uses Of Metals And Nonmetals

December 23, 2020 by Veerendra

USES OF METALS AND NON-METALS Uses of some common metals and non-metals are as follows.Metals  Iron is used for making automobiles, machinery, pipes, containers, nails, etc. Gold and silver are used for making jewellery. Copper is used for making electrical wires, cooking utensils, etc. Zinc is mainly used as a protective coating for iron. Aluminium is used for making … [Read more...] about What Are The Uses Of Metals And Nonmetals

Chemical Properties Of Metals And Nonmetals

December 23, 2020 by Veerendra

Chemical Properties Of Metals And Nonmetals 3

Chemical Properties Of Metals And Nonmetals Chemical properties of metals and non-metals can be divided into five categories: reaction with oxygen, reaction with water, reaction with acids, reaction with bases, and displacement reactions. Reaction with Oxygen Metals: Most metals combine with oxygen to form metal oxides.Sodium reacts vigorously with the oxygen present … [Read more...] about Chemical Properties Of Metals And Nonmetals

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