ساينس الصف الرابع الإبتدئي – الفصل الدراسي الاول In This part we will study : 1. Metallic luster: Metals have metallic luster, while non-metals do not have metallic luster. 2. Electric conductivity Metals are good conductors of electricity, while non-metals are bad conductors of electricity except carbon (graphite) which is a good conductor of electricity. بالتوفيق مستر احمد الباشا