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Saturday, 29 April 2017

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Solid state

Definition the state of matter in which materials are retain their boundaries without support, the atoms or molecules occupying fixed positions with respect to each other and unable to move freely. Types of solid:- 1.      Crystalline Solid :- Eg:- Metals And Non metals 2.      Amorphous...

Friday, 28 April 2017

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electrochemistry for 12th

defination Electrochemistry is the study of chemical processes that cause electrons to move. This movement of electrons is called electricity, which can be generated by movements of electrons from one element to another in a reaction known as an oxidation-reduction ("redox") reaction          ...
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