شرح ساينس الصف الثاني الاعدادي لغات - الفصل الدراسي الاول
شرح ساينس تانية اعدادي - ترم اول

لينك تحميل الملزمة
https://drive.google.com/file/d/1R9fNhk_DH3qS-s5xGVKCJ7km6ttNgGL_/view?usp=sharing

لينك تليجرام
https://t.me/mrahmedelbashagroup

in this lesson:
The system
Any part of the universe that is under study where the changes in energy and matter are observed.

The surroundings
The space surrounding the system, which can exchange energy or matter or both with the system.

Internal energy of the system
The summation of the potential and the kinetic energies of the particles of the system.

The temperature of a system
It is a measure of the average kinetic energy of the particles of the system.

The effect of heating on the potential and kinetic energies of objects
When a substance (system) gains a quantity of thermal energy, the average kinetic energy of its particles increases, leading to a rise in the temperature of the system, and vice versa.
So that, any change in the internal energy of a substance affects its temperature.

بالتوفيق
مستر احمد الباشا