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Science Test
Kris
Question | Answer |
---|---|
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 |