Student listening skills improve my class, daily shortcut notes providing  each and every minute active learning and skills I will give better understanding good knowledge enthusiasts and news things I will give best of my knowledge in front of students thank to all . State board and cbse isc, igse, meet, jee also teach and student daily attend any one of class in the evening to improve yourself  example one explanation of chemistry content what is atom in the small question understand to all atom is the smallest particles of elements electron, proton, and neutron, electron revolve around the nucleus part  charge of electron - and charge of proton  positive and charge of neutron no charge electron is discovered by j. J Thomson, proton is discovered by Goldstein neutron is discovered by James Chadwick. Let us considered to  atom is the smallest particles of an elements that can take part in a chemical reaction.