NCERT CHAPTER1 CHEMICAL REACTIONS AND EQUATIONS EXPLANATION
CHAPTER 1: CHEMICAL REACTION AND EQUATIONS Chemical reaction To explain the chemical reaction, it is necessary to understand the terms related to it. So, the terms related to a chemical reaction are (i) Reactants Materials required to start a chemical reaction are called reactants. Example: When we add water to the dry limestone, it releases heat. Here, the limestone and the water are reactants. (ii) Products When two or more reactants mix or react with each other, they form other substances/materials known as products. Click here to access the special offer! Click Here In the above example, the gas is coming out; the gas is the product. What happens during a chemical reaction 1. New products are formed 2. The physical state of the products can be changed 3. Temperature changes 4. Evolution of Gas or not Writing a chemical reaction Let the "A" and "B" react to each other and form "C" and "D." This condition can be written in the symbo...