Notes of Ch1 chemical reaction and equation\class 10 the science
Notes of Ch 1 Chemical Reactions and Equations Class 10th Science Topics in the Chapter • Introduction • Chemical reaction • Chemical equation • Balanced chemical equation • Types of chemical reaction • Corrosion • Rancidity Introduction → Most of the substance around us undergoes various changes. Some of these changes are temporary with no new substance being formed. They are called physical changes. → In certain other changes the new substance formed in which the reactant or the parent loses its identity to form new substance called product. These changes are permanent changes as we won’t get the reactant back. Chemical Reaction → Chemical reaction is the process by which two or more substance react with each other to form new substance with different properties. → These are the following changes to determine that the chemical reaction has taken place: (i) Change in state (ii) Change in color (iii) Evolution of gas (iv) Change in temperature Chemical Equation → A chemical equ...