Atomic Structure In Periodic Table Flashcards
1
Q
Atom
A
Smallest unit of matter that has the same properties of an electron
2
Q
Proton
A
Positively charged subatomic particle in the nucleus +1
3
Q
Electrons
A
Negatively charged subatomic particle outside of the nucleus
4
Q
Nucleus
A
Center of an atom has protons and neutrons
5
Q
Atomic number
A
Number of protons identifies and atom
6
Q
Mass number
A
Number of protons and neutron
7
Q
Group
A
Column on the periodic table has the same number of valance electrons
8
Q
Period
A
Row on the periodic table
9
Q
Balanced electrons
A
Electrons in the outermost energy shell they determine reactively
