Mention two properties that can be used to sort materials into groups?
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Objects are grouped on the basis of properties like lustre, hard/softness, transparency, solubility, floatation, attraction towards magnet, conduction of heat and conduction of electricity. Materials can be grouped as lustrous and non-lustrous on the basis of lustre/shine possessed by them.
Solid to liquid: Melting
Liquid to sol id: Freezing
Gas to liquid: Condensation
Liquid to gas: Evaporation
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