Atomic Structure + Periodic Table Flashcards
1
Q
Atom
A
Smallest unit of matter that has the properties of an element!
2
Q
Protons
A
Positively charged subatomic particle in the nucleus (+1)!
3
Q
Neutron
A
Neutral subatomic particle in the nucleus (0)!
4
Q
Electrons
A
Negatively charged subatomic particle outside the nucleus (-1)!
5
Q
Nucleus
A
Center of an atom, has protons + neutrons!
6
Q
Atomic Number
A
Number of protons + number of neutrons!
7
Q
Group
A
Column of the periodic table, has the same number of valence electrons!
8
Q
Period
A
Row on the periodic table!
9
Q
Valence Electrons
A
Electrons in the outermost energy shell! They determine reactivity!
10
Q
Mass Number
A
Number of protons + number of neutrons!
