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what is an element?
A substance that can not be broken down into other substances
How many elements are there in the periodic table?
118 Elements
Cl is the symbol for?
Chlorine
Fe is the symbol for?
Iron
Au is the symbol for?
Gold
W is the symbol for?
Tungsten
N is the symbol for?
Nitrogen
He is the symbol for?
Helium
elements of the same properties are arranged in the periodic table in the same ............
group
Positively charged particles inside the nucleus are called ..................
protons
negatively charged particles arpund the nucleus are called .............
electrons
neutral particles inside the nucleus are called ......................
neutrons
which is smaller an atom or a cell?
an atom
which one is having a smaller nucleus? (atom or cell)
an atom
