number of protons is atomic number
Number of protons can change
Proton and electrons are attracted to each other
No electric charge
Slightly larger mass than proton
Both one Neutron and proton together are atomic mass unit.
made of neutron and proton
circled by electron
Headquarters of a cell
Each of two or more forms of the same element with a different number of neutrons.
He thought that if you kept cutting a piece of wood in half you will reach the end and get an atom and as he said it "Atomos"