Atomic Structure + Periodic Table Flashcards
1
Q
Atom
A
The smallest unit of matter that has the properties of an element
2
Q
Proton
A
Positivity charge subatomic particles in the nucleus (+1)
3
Q
Neutron
A
Neutral subatomic particle in the nucleus (0)
4
Q
Electron
A
Negative charge subatomic particle that is outside of the nucleus (-1)
5
Q
Nucleus
A
Center of the atom has protons+ neutrons
6
Q
Atomic number
A
Numbers of protons in an atom identifies the atom
7
Q
Mass number
A
The number of protons + neutrons
8
Q
Group
A
The Column of the periodic table, has the same number of Valence electrons
9
Q
Period
A
The row on the periodic table
10
Q
Valence electrons
A
The electrons in the outermost energy shell determine reactivity
