Structure of the Periodic Table: The periodic table has 7 horizontal rows which are called periods and 18 vertical columns which are called groups. Please note that there...
Periodic Classification: The arrangement in which the substances of the same properties reappear again at regular interval based upon some fundamental properties is called Periodic classification or Periodical...
Elements A chemical element is a pure chemical substance consisting of one type of atom distinguished by its atomic number, the number of protons in its nucleus. They...
Chemical Reactions Chemical reactions are happening around us all the time and even in our body. Respiration and digestion in all living organisms, rusting of iron, cooking of...
Atomic Number: Each element is characterized by an atomic number denoted by Z, which is number of the protons. Proton is positively charged and neutrons are charge less,...
Law of Conservation of Mass The law of Conservation of Mass states that matter can neither be created nor destroyed. This law was the result of exact measurement...
Matter can exist in at least four fundamental states viz. solid, liquid, gas and plasma. There are other states also but they don’t exist in our natural environment....
