Physical and Chemical Changes. Can you identify these changes as I make lemonade in this video! What is the Difference between Physical and Chemical Changes? It's all explained in this video with interesting examples and exciting experiments! Try the Top 3 Questions at the end of the video and write your answers & doubts in the comments below! At Manocha Academy, learning Science and Math is Easy! The school coursework is explained with simple examples that you experience every day! Yes, Science & Math is all around you! Let's learn every day from everyday life!