atoms can be protons-positive, electrons-negative and nuetrons-nuetral.
atoms make up all matter.
what are some facts about atom's
info's and ideas?
2 answers
http://www.historyforkids.org/scienceforkids/chemistry/atoms/
http://www.chem4kids.com/files/atom_intro.html
http://www.chem4kids.com/files/atom_intro.html