ساينس الصف الرابع الإبتدئي – الفصل الدراسي الاول In This part we will study : 3. heat conductivity Metals are good conductor of heat , while nonmetals are bad conductor of heat 4. Melting Point Metals have high melting points, while non-metals have low melting points . 5. malleability Metals can be bent and reshaped, while non-metals cannot. Points Metals Non metals 1 – luster Shiny Not shiny 2 – malleability Malleable Not malleable 3 – heat conductivity Good Bad 4 – electric conductivity Good Bad except Carbon (graphite) 5 – melting and boiling points High Low 6 – state at room temperature. All solids except mercury They are: Solids as carbon and phosphorus. Liquids as bromine. Gases as oxygen and nitrogen. بالتوفيق مستر احمد الباشا