ساينس الصف الرابع الإبتدئي – الفصل الدراسي الاول In This part we will study : Matter It is anything that has a mass and volume. It is anything that has a mass and occupies a space. Mass It is the amount of matter in an object. Volume It is the space occupied by matter. Give reasons: 1. Air is matter. 2. Paper is matter. 3. Water is matter. بالتوفيق مستر احمد الباشا