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Science Test

Kris

QuestionAnswer
the simplest pure substance element
smallest unit of element, has all characteristics of that element atom
dense center, +charge due to protons, 99.9% of mass of atom contains (protons and neutrons) nucleus
surronds, nucleus, - charge due to (electrons) electron cloud
+charge, located in nucleus, mass = 1 amu (Atomic Mass Unit) proton
no charge, located in nucleus, mass =1 amu neutron
charge(neg), located in electron cloud on orbitals/energy levels, almost no mass electron