Punjab Chemistry Online 9th Class Test Lesson 8 Chemical Reactivity

Reactivity in chemistry refers to the chemical reactions of a single substance, the chemical reactions of two or more substances that interact with each other, the systematic study ... Continue Reading →

Punjab Chemistry Online 9th Class Test Lesson 7 Electrochemistry

The branch of chemistry that deals with the relations between electrical and chemical phenomena. Electrochemistry is a branch of chemistry dealing with chemical reactions that involve ... Continue Reading →

Punjab Chemistry Online 9th Class Test Lesson 6 Solutions

In chemistry, a solution is a homogeneous mixture composed of only one phase. In such a mixture, a solute is a substance dissolved in another substance, known as a solvent. The solvent ... Continue Reading →

Punjab Chemistry Online 9th Class Test Lesson 5 Physical States of Matter

States of matter in physics are the distinct forms that different phases of matter take on. Four states of matter are observable in everyday life: solid, liquid, gas, and plasma. Diffusion ... Continue Reading →

Punjab Chemistry Online 9th Class Test Lesson 4 Structure of Molecules

A group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction. The definition of the molecule has evolved ... Continue Reading →

Punjab Chemistry Online 9th Class Test Lesson 3 Periodic Table and Periodicity of Properties

Periodicity is one of the most fundamental aspects of the periodic table of the elements. Here is an explanation of what periodicity is and a look at the periodic properties. The modern ... Continue Reading →

Punjab Chemistry Online 9th Class Test Lesson 2 Structure of Atom

According to Dalton that An Atom is and invisible, hard dense sphere, Atoms of the same element are alike, Atoms combine in different ways to form a compound. In 1932 James chadwick ... Continue Reading →

Punjab Chemistry Online 9th Class Test Lesson 1 Fundamentals of Chemistry

The Branch of Science which is concerned with the substances of which matter is composed the investigation of their properties and reactions, and the use of such reactions to form new ... Continue Reading →