Chemistry is the study of matter and its properties. How and why various substances combine or separate with each other and their reactions with other substances. Understanding the basics of chemistry is very important for students no matter which field they choose in their lives. Every substance is made of matter even our own bodies. Everything we do from cooking to cleaning, chemistry is involved everywhere. Chemistry is one of the most important subject of class 11th Science. As it forms the base for class 12th Boards and for higher education students should focus and get their concepts crystal clear to achieve their goals.