Categories
Chemistry

Water Pollution

Water Pollution Based on source of pollution, the following types of water pollution are recognised Water pollution due to city […]

Categories
Chemistry

SOURCES AND TYPES OF WATER

In the Earth’s biosphere, water is essential to all forms of life. Interestingly, it is also the biospheres most abundant […]

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Chemistry

Iron

Tin does not occur naturally as a free element. The main source is the mineral cassiterite or tin stone, SnO2. In […]

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Chemistry

Tin and Copper

Tin Tin does not occur naturally as a free element. The main source is the mineral cassiterite or tin stone, […]

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Chemistry

Calcium and Aluminium

Calcium Calcium is too reactive to occur as a free metal in nature. It occurs abundantly in the combined state […]

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Chemistry

Metals

Metals Physical Properties of Metals The physical properties of elements are dependent on the arrangement of their atoms or molecules […]

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Chemistry

Carbohydrates

Carbohydrates (saccharides) – Molecules consist of carbon, hydrogen and oxygen atoms. It is a major food source and a key […]

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Chemistry

Polymers – Plastics

Polymers are giant molecules which are formed by joining together a large number of much smaller molecules thus, forming a […]

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Chemistry

Amino Acids

Amino acids are the basic structural units of proteins. Amino acids are organic compounds which contain both an amino group and a […]

Categories
Chemistry

Fats and Oils

Fats and Oils Fats and oils are naturally-occurring esters of three long carboxylic acids  called fatty acid with a special type of alcohol called glycerol ( propane- […]