Chemistry Ch 1 Class 9
Important easy to understand Notes of Chemistry Ch 1 Class 9 English Medium written by Professor Sulman Arif Suib. These notes are very helpful in the preparation of Chemistry for students of the 9th class Chemistry English Medium and these are according to the paper patterns of all Sindh Book Boards.
Summary and Contents:
Topics which are discussed in the notes are given below:
- Define Chemistry also write the name of different branches of chemistry.
- Define the (i) Physical Chemistry (ii) Organic Chemistry (iii) Inorganic Chemistry (iv) Biochemistry (v) Nuclear Chemistry (vi) Environmental Chemistry (vii) Analytical Chemistry (viii) Medicinal Chemistry (ix) Quantum Chemistry (x) Green Chemistry.
- Importance of Chemistry in daily life
- Give one contribution of following scientists (i) Jabir ibne Haiyan (ii) Al Razi (iii) Al Beruni (iv) Ibne-Sina (v) J. Black (vi) J. Priesly (vii) Cavendish (viii) Lavoisier (ix) Mendeleve (x) Neil Bohr (xi) Rutherford (xii) Elbert Einstein
- Define the (i) Matter (ii) Atom (iii) Molecule (iv) Mono Atomic (v) Diatomic (vi) Polyatomic (vii) Substance with example
- What is an Element list 10 elements with their symbol and name.
- What is the valence? also give valence of some elements.
- What is the chemical formula? also give example of it.
- What is compound give 6 examples of compound.
- Differentiate between Elements and Compound.
- Differentiate between mixture and compound.
- Differentiate between empirical formula and molecular formula.
- Define Atomic Number and Atomic Mass with example.
- What is an ion? Also define cation, anion, molecular ion, and free radical.
- Differentiate between molecules and Molecular ion.
- Give some examples of (i) Monoatomic Molecule (ii) Diatomic Molecule (iii) Triatomic Molecule (iv) Poly Atomic Molecule (v) Homo Atomic Molecule (vi) Metro Atomic Molecule with examples.
- Fill the table with elements, number of elements, atomic number, and mass number.
- How many protons, neutrons, and electrons are present in the following atom?
- Calculate the molar mass of the following?
- Calculate the number of atoms in the following?
- Calculate the number of molecules in the following?
- Multiple Choice Questions (MCQs) of Chemistry Ch 1 Class 9.