Density - A measure of how much mass is contained in a given volume of a substance., an apple - Floats, a paperclip - Sinks, Gas - the particles are spread out, Oil - is less dense than water, solid - Particles are packed tightly together, Smoke - is less dense than air, water - is more dense than air,

بواسطة

لوحة الصدارة

النمط البصري

الخيارات

تبديل القالب

استعادة الحفظ التلقائي: ؟