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Name Hour _ Date ATOHS :' You can becomemorefamiliarwith atomicstucture of somecommonsubstancesby comgletingthe chart befow. For each substance,you have been givenenoughinformationto fill in all the blanks, Remember: 1. The numberof protonsequalsthe numberof electrons. protons = electrons 2. Theatomicnumberegualsthe numberof protons. atomicnumber = protofls 3. The massnumberequalstfre numberof protonsplus numberof neutrons. massnumber= protons+ .neutrons 4. The massnumberminusthe atomicnumberequalsthe numberof neutrons. massnumber- atomicnumber= neutrons Element Syrnbol Atomic Mass Numberof number number protons Hefium He 2 4 Lithium Li 3 7 Zinc Zn 30 65 AI 13 o 11 14 N Au 12 35 17 26 Numberof Numberof eleqtrons neutrons 14 solid,gas or liquid Name: Hour: A T O MTCS T R U C T U B E : 1. What do each of the foltowingstandfor: Tungsten Answerthe followingquestionsabout the parts of the atom. What is the charge on an electron? Where is the neutron found? What is the charge of a Proton? Where are electrons f ound? In a neutral atom, the numberof protons equals the numberof What is the charge of a neutron? lsotopesof an elementdiffer by the numbersof that they have.