Pluchino – Regents Chemistry Phases of Matter – 04 Solids Aim: How do the molecules of a substance behave in the solid state? Do Now: Describe the particles of a solid, a liquid and a gas. Solids Definite shape and volume Particles are packed close together Particles vibrate in their places Usually associated with strong IFM Amorphous No organization Range of melting points Crystalline Well organized Definite melting point Types of Solids Molecular Solids Covalently bonded molecules held together by intermolecular forces Low melting points Unable to conduct electricity Ionic Solids Highly organized Held together by electrostatic forces
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