Atomic Structure And Periodic Table Vocab Flashcards
1
Q
Atom
A
The smallest unit of matter that has the properties of an element
2
Q
Proton
A
positively charged subretonie pachele in the nucleus (+/)
3
Q
Neutron
A
neutral Subatonie partiele in the nucleus
4
Q
Electron
A
negatvely charged subatomic partele outside the nucleus (-1)
5
Q
Nucleus
A
center of an atom, has protons a neutrons
6
Q
Atomic number
A
- number of protons in an atom, identifies the atom
7
Q
Mass number
A
the number proton + nentrons
8
Q
Group
A
group-coulum on the periodic table, nas the some number uf valence elecross
9
Q
Period
A
nov on the perodic table
10
Q
Valence electrons
A
electrons in the determine outermat energy shell.
