100 chemical compounds summary

Summary - Common name Chemical name Formula Washing soda Sodium carbonate decahydrate Na 2 CO 3 .10H 2 O Baking soda Sodium bi carbonate NaHCO 3 Quick lime Calcium oxide CaO Bleaching powder Calcium oxychloride CaOCl 2 Slaked lime Calcium hydroxide Ca(OH) 2 Plaster of Paris Calc..

Water is a compound containing the elements of hydrogen and oxygen combined chemically in the ratio of 2:1. The 3 states of water i.e., ice, water and water vapour are interconvertible by heating or cooling. Water contains dissolved air and minerals which are responsible..

Summary - In a physical change the shape, size, appearance or state of a substance may alter, but it is a temporary change, which is usually reversible. There is no new substance formed, no change in the mass of the substance and no energy changes are involved. In a chemical cha..

Water is a compound containing the elements of hydrogen and oxygen combined chemically in the ratio of 2:..

The symbol of an element is a short way of representing an element . Some symbols are named after the first capital letter of the English name of the element. When there is more than one element starting with the same English capital alphabet, the second letter is also used in its lower case, ..

Earth is said to have been formed about4.8 billion years ago. Earliest earth was a hot revolving ball of gas. The formation of first cells in planet earth is explained by the theory of chemical evolution proposed by Oparin and Haldane, independently. According to this theory, t..

In photosynthesis, light energy is converted to chemical energy and carbon is fixed into organic compounds. Light energy is captured by the living world by means of pigments. The pigments involved in photosynthesis in eukaryotes include the chlorophyll and carotenoids. Light abs..

An electrolyte is a compound (salt, acid or base), which in solution or in a molten state conducts an electric current and is simultaneously decomposed by it Electrolytes are ionised into electrically charged ions, which carry the current Charged ions move towards the oppositely c..

If a current I flows through a potential drop V, the energy lost per second by the drifting charges is VI. In a resistor of resistance R, the loss of energy appears as heat. The rate of heat production P is P = VI = I 2 R = V 2 /R and is independent of the direction of current Electrolysis of ..

Matter is anything that occupies space. An Atom is the smallest particle of an element that takes part in a chemical reaction. A molecule is the smallest particle of a substance that has independent existence. Atomic mass unit is one-twelfth mass of an atom of carbon (C-12). It..