Atomic Structures Plus Periodic Table Vocab Flashcards
1
Q
Atom
A
Smalect hit of matta that bas the prperties of an element
2
Q
Protons
A
Positively charged Sabaton particles in the nucleus +1
3
Q
Neutron
A
Neutral somatic particles in the nucleus zero
4
Q
Electrons
A
Negatively charged subatomic particle outside the nuclas - 1)
5
Q
Nucleus
A
Center of the atom has protons plus neutrons
6
Q
Atomic number
A
Number of protons identifies an atom
7
Q
Mass number
A
Number of protons plus number of neutrons
8
Q
Group
A
Column on the periodic table that has the same number of valence electrons
9
Q
Period
A
Row on the periodic table
10
Q
Valence electrons
A
Electron in the outer most energy shell they determine reactivity
