Atom Structure + Periodic Table Vocab Flashcards
1
Q
Atom
A
Smallest unit of matter that has the same properties of an element
2
Q
Protons
A
Positively charge subtomic particle in the nucleus +1
3
Q
Neutron
A
Neutral subtomic particle in the nucleus 0
4
Q
Electrons
A
Negatively charged subtomic particle outside of the nucleus -1
5
Q
Nucleus
A
The center of a atom, has protons plus neutrons
6
Q
Atomic number
A
Number of protons, identities of an atom
7
Q
Mass number
A
Number of protons plus number of neutrons
8
Q
Group
A
Column on the periodic table, has the same number of valence electrons
9
Q
Period
A
The rows on a periodic table
10
Q
Valence electron
A
Electrons and the outer most energy shell they determine reactivity
