ساينس الصف الأول الاعدادي – الفصل الدراسي الاول ساينس اولي اعدادي ترم اول In This part we will study : Matter It is anything that has a mass and a volume. or It is anything that has a mass and occupies a space. Mass It is the amount of matter that the body contains. • The measuring unit of mass is gm. or kg. Volume It is the space that is occupied by the body. • The measuring unit of volume is cm3, m3 or L Matter can be distinguished from each other by : Physical properties. Chemical properties . Physical properties 1. The color, taste and smell 2. Density 3. Melting point 4. Boiling point 5. Hardness 6. Electric conduction 7. Thermal conduction Density It is the mass of unit volume of a substance. or It is the mass of one cubic centimeter bf a substance. Density = (Mass (M))/(Volume (V)) The measuring unit of density is gm/cm3. لمتابعة مستر احمد الباشا وكل ما يخص الساينس : جروب الفيس بوك http://bit.ly/2Of1mcN صفحة الفيس بوك http://bit.ly/2Gq5xMo بالتوفيق مستر احمد الباشا