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unit 3 lessons 1/2
Question | Answer |
---|---|
atom | the smallest unit of protons an element that maintains the properties of that element |
electron | a subatomic partials that has a negative charge |
nucleus | |
proton | |
neutron | |
electron cloud | |
atomic number | |
mass number | |
periodic table | |
chemical symbol | |
average atomic mass | |
metal | |
nonmetal | |
metalloid | |
group | |
period |