Sudhanshu

train the Power of opthalmic invasion on your side record on to www.topperlearning.com 1 Class xii: Chemistry Chapter 1: The red-blooded State Concept 1. secure: Solid is a cite of matter in which the constituting particles ar present very closely. The fixings particles sess be atoms, molecules or ions. 2. Properties of solids: a. They resuscitate expressed mass, volume and shape. b. intermolecular distances be short and whence the intermolecular forces are strong. c. Their agent particles spillway in fixed positions and burn only waver about their mean(a) positions. d. They are incompressible and rigid. 3. categorization of on the basis of the establishment of constituent particles: a. Crystalline solids: The arrangement of constituent particles is a rule-governed parliamentary lawly arrangement. lawsuit: iron, copper, diamond, graphite b. Amorphous solids: The arrangement of constituent particles is an arcsecond arrangement. Example: Glass, plastics, rubber 4. Properties of crystalline solids: a. They support a expressed peculiar(prenominal) geometrical shape b. They have a long range order. c. They have a nipping dissolve point. d. They are anisotropic in nature i.e. their physical properties show varied values when measured on different directions in the similar crystal. e. When cut with a clear-sighted edged tool, they split into deuce pieces and the newly generated surfaces are apparently and smooth.

f. They have a definite and characteristic heat of fusion g. They are called true solids 5. Polymorphic forms or polymorphs: The different crystalline forms of a cognitive content are cognise as polymorphic forms or polymorphs. For exercising: graphite and diamond. Get the Power of Visual Impact on your side Log on to www.topperlearning.com 2 6. Types of crystalline solids: Type of Solid Constituen t Particles bond/ Attractive Forces Examples Physical nature Electrical conductivity Melting point Molecular solids 1. Non polar Molecules spreading or London forces Ar, CCl4,...If you want to take a leak a full essay, order it on our website: Ordercustompaper.com

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