شرح علوم متكاملة لغات الصف الاول الثانوي لغات - الفصل الدراسي الأول
شرح علوم متكاملة اولي ثانوي لغات - ترم أول
Integrated Sciences for Grade 10 (First Year of Secondary School) - First Semester

لينك تحميل الملزمة
https://drive.google.com/file/d/1Y57gw8YAiZmrJPOKmaugrXYxSe_-1eSJ/view?usp=sharing

لينك تليجرام
https://t.me/mrahmedelbashagroup

in this Lesson:
Water is necessary for the continuity of life on Earth :
Covalent bond: It is a type of chemical bonds that binds between two atoms by sharing electrons where each atom shares one or more electron to form the bond.
Electronegativity: It is a measurement for the atom's ability to attract the electrons of the chemical bond towards itself for longer period of time.
Dissociation of table salt (NaCl) salt in water:
* On adding sodium chloride crystals (ionic compound) to water:
- Sodium chloride molecules are dissociated into (Na+) and (Cl-) ions.
- Water molecules surround the ions, where:
• Positive sodium ion is surrounded by partially negative oxygen atoms.
• Negative chloride ion is surrounded by partially positive hydrogen atoms.

The pH value of the solution:
It is a quantitative measurement with values ranging from 0 to 14, that expresses the acidity neutrality or alkalinity of the liquid or the solution.

بالتوفيق
مستر احمد الباشا