Class 9th Chemistry Notes Free PDF Download Punjab Curriculum

Chemistry Notes Free PDF Download Punjab Curriculum

Class 9th chemistry complete notes in pdf is now available on Eilm.com.pk. Here in this section you will get completely free chemistry 9th class pdf notes prepared by Eilm high quality teachers. These notes are exactly according to Bise exams it covers all important parts of exam like Short questions, Long questions, Numerical problems and MCQS.All important concepts and topics like fundamental of chemistry, structure of atoms, molecular forces, periodic table, solutions, suspensions and electrochemistry. All important chemistry concepts of class 9 are discussed in detail in these notes and these notes are very helpful to get high marks in your board exam.

Class 9 Chemistry Notes – All Chapters

In this unit students will be able to clear and get the major concepts about chemistry and its fundamentals that will help them in next lessons.
● Branches Of Chemistry
● Distinguish between matter and substance
● Definition of Ions molecules formula and free radicals
● Define atomic number atomic mass and atomic mass unit
● Difference between atom molecule and element.
● Differentiate between molecular and empirical formula.
● Differentiate between molecule molecular ions free radicals.
● Concept of Avogadro’s Number

Atom is the first concept which students study in class 9th chemistry. In this chapter structure of atoms its theories ,electronic configuration and other main topics which are listed below will be covered.
● Explain Rutherford atomic model
● Explain Bohr’s atomic theory.
● Structure of atom proton neutron and electron configuration.
● Isotopes and its types
● Properties of isotopes of H, C, CL, U
● Draw structure of different isotopes from mass and atomic number
● State important uses of isotopes in daily life
● Describe the presence of subshell and I shall
● Distinguish between shell and subshells.

Concept of periodic table is very important so students must focus on this concept. Here in this unit the following important topics are covered.

● Distinguish between period and group in periodic table.
● State periodic law.
● Properties of periodic table
● Explain the shape of periodic table
● Describe the physical and chemical properties of the same group elements
● Explain concept of atomic size and atomic radius
● Define ionization energy and electron affinity.
● Explain the concept of electronegativity

In this unit students will study the chemical reactions types of reactions and structure of molecules. The list of important topics are given below
● Why do atoms react
● Chemical Bonds and Its Types
● Ionic Bond Covalent Bond and its types
● Co-ordinate covalent polar non polar bonds
● Metallic Bonds and intermolecular Forces
● Hydrogen Bonding
● Describe the importance of electronic configuration in formation of ionic bonds
● Draw electron dot and cross structure

Metal exists in gaseous liquid and solid States. In this chapter of class 9 chemistry the metal state and its properties are discussed.
● Definition of properties like diffusion effusion and pressure
● Define compressibility mobility and density of gases
● Boys law and its effect by increasing pressure and volume
● What is absolute temperature
● Charles Law and its examples
● States of matter and role of intermolecular forces
● Explain the properties like evaporation, vapors pressure, boiling point, freezing point
● Types of solid crystalline amorphous solid
● Allotropy and its examples

The following are the major concepts of this chapter.
● Define the terms: solution, aqueous solution, solute and solvent
● Explain the difference between saturated, unsaturated and supersaturated solutions
● Explain the formation of solution that is mixing of gases liquids and its molecular forces
● What is meant by concentration?
● Define molarity
● Define percentage solution
● Numerical problems involving molarity
● How to prepare dilute solution from concentrated solution of known molarity
● Convert between the molarity of a solution and its concentration in g/dm
● Use the rule that “like dissolves like” to predict the solubility of one substance
in another

● Define oxidation and reduction in term loss or gain of oxygen or hydrogen
● Oxidation States and rules for assigning oxidation states
● Identify the oxidizing and reducing agents in a redox reaction.
● Define oxidizing and reducing agents in a redox reaction.
● Explain the electrochemical process
● Draw electrolytic cell and sketch cathode and anode points
● List the uses of electrolytic cell
● Draw Daniel cell and its cathode and anode points
● Explain the process how a battery produce electric current?
● Distinguish between electrolytic and voltaic cells.
● Explain the methods of synthesis of alkali metals.
● State the manufactureing of sodium metal from fused NaCl.
● Identify the formation of by products in the manufacture of sodium metal from fused NaCl

In this unit the basic concept of chemical reaction and how anions and cations formed is discussed. The following are the important subtopics of Class 9th chapter 8 chemistry book.
● Explain how cations and anions are associated with metals and nonmetals
● Explain why alkali metals are not found in free state
● Describe the difference between the metal and nonmetal ionization energies
● Explain the sodium position in periodic table and its properties
● Position of calcium and magnesium in periodic table and their properties
● Differentiate between soft and hard metals (iron and sodium)
● Describe the inertness of noble metals.
● Identify commercial value of silver, gold and platinum.
● State some important reactions of halogens
● Tell name of some elements that exist in nature in uncombined form