Atomicstrudture Periodic Table Vocab Flashcards
1
Q
Atom
A
Smallest units of matter that has properties of elements!
2
Q
Protons
A
Positively charged subatomic particles in the nucleus (+1)
3
Q
Neutrons
A
Neutral,subatomic particles in the nucleus(0)
4
Q
Electrons
A
Negatively charge subatomic particles outside of the nucleusparticles (+1)
5
Q
Atomic numbers
A
Numbers of Protons identifies an atom!
6
Q
Mass numbers
A
Numbers of protons and numbers of the neutrons!
7
Q
Group
A
Column of the period table has the same numbers of valence electrons!
8
Q
Period
A
Row on the period table!
9
Q
Valence electrons
A
Electrons in the outmost energy shell! They determin reactivity!
