nucleus Flashcards
1
Q
nucleus
A
made up of protons and neutrons
2
Q
proton
A
a subatomic particle with a positive charge
3
Q
neutron
A
subatomic particle with no charge
4
Q
electron
A
subatomic particle with negative charge
5
Q
orbital
A
high chance of electrons in an atom
6
Q
valence electron
A
electron that is located outermost shell of an atom
7
Q
periodic law
A
repeating chemical and physical properties of elements will change patterns with their atomic number
8
Q
period
A
horizontal
9
Q
group
A
vertical column
10
Q
group
A
vertical column
11
Q
ion
A
atom or group of atoms that has - or + electrons
12
Q
atomic number
A
number of protons in the nucleus
13
Q
mass number
A
sum of the # of protons and neutrons in the nucleus
14
Q
isotope
A
same number of protons, different neutrons
15
Q
atomic mass unit
A
a unit of mass that describes the mads of an atom or molecule
