شرح درس
Acids and Bases
CHEMISTRY - Secondary 1
In This part we will study
Uses of Acids and Bases
Acids are used in many chemical industries like:
- Fertilizers. - Medicines. - Plastic. - Car batteries.
Bases also have many uses in chemical industries like :
- Soap. - Detergents. - Dyes. - Medicines.
 The following tables show some of the natural and industrial products and the acids and bases entering in their composition or preparation:

Properties of acids and bases

 Acids react with:
• Active metals:
Producing salt of acid and hydrogen gas H2 evolves.
Zn(s) + 2HCl(aq) → ZnCl2(aq) + H2(g) ↑
Zinc Hydrochloric acid Zinc chloride Hydrogen gas
• Carbonate or bicarbonate salts :
Causing effervescence and producing carbon dioxide gas CO2 which makes limewater turbid.
Na2CO3(s) + H2SO4(aq) → Na2SO4(aq) + H2O(l) + CO2(g) ↑
Sodium carbonate Sulphuric acid Sodium sulphate water Carbon dioxide gas


 Theories defining acids and bases
 The external appearance of acid and base leads to an experimental definition for each.
 The experimental definition is based on observation only and doesn't describe or explain the unseen properties.
 The more overall definitions of acid and base come from the studies and experiments, that were placed in the form of theories.


Best wishes to you
Mr.Ahmed Elbasha

كيمياء الصف الاول الثانوي لغات - الفصل الدراسي الاول
شرح كيمياء لغات اولي ثانوي - مستر احمد الباشا
كيمياء لغات - الصف الاول الثانوي - كيمياء اولي ثانوي الترم الاول - كيمستري اولي ثانوي الترم الاول