CHEMISTRY CHAPTER - 01
CHEMICAL REACTIONS AND EQUATIONS Course Content I) Introduction II) Types of changes III) Chemical Reactions IV) Chemical Equations V) Different types of chemical reactions VI) Oxidation and reduction reaction VII) Oxidising and reducing agents VIII) Balancing of chemical equations IX) Corrosion and Rusting (prevention of rusting ) X) Rancidity >Write the difference between physical and chemical change. 1)Physical change :- ➡️It is a temporary change. ➡️It affects only physical properties i. e shape, size etc. ➡️It involves very little to absorption* of energy. ➡️For example - freezing of water, melting of wax, boiling of water etc. ➡️It do not involve the production of energy. ➡️No, new substance is formed. ➡️It is easily reversible i. e original substance can be reformed. Chemical changes :- ➡️It is a permanent change. ➡️It has both physical as well as chemical properties of the substance including its composition. ➡️In t...