المادة و خصاصها

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Matter:Is Any Thing That Has Mass And Volume
Some Rules On This Lesson
Density:It Is The Volume Unit Mass Of A Substance Or (Mass Of One Cubic Centimeter 1cm3).a
The Melting Point : It Is The Temperature At Which Matter Change From Solid State Into Liquid State
Boiling Point : It Is The Temperature At Which Matter Changes From Liquid State to Gaseous State
Hardnes : It Is the Solids Which Are Soft , Or Need Heat To Be Soften , OrWhich Can't Be Soften
Electric Conduction : It Is The Matter Which Is Good Or Bad Conductors Of Electricity
Heat conduction : It Is The Matter WhichIs Good Or Bad Conductors Of Heat
Chemical Activity : It Is The element that is very active , or medium active , or less active

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انا اسف يا أحمد

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