physical and chemical changes explaination in easy way through animation♥️♥️♥️( std 7) 

#ncertscience #physicswallah #chemistry #chemistrynotes #jchemistry #biology #ncertsolutions #lessonplan Physical changes do not produce a new substance. Chemical changes result in the production of a new substance and cannot be reversed.#ncertscience #motioninonedimension #physical and chemical change