Atoms And Elements Flashcards
1
Q
Elements are made up of…
A
One type of atom
2
Q
Electron
A
-, in shells orbiting around the nucleus
3
Q
Proton
A
+, inside nucleus
4
Q
Neutron
A
Neutral, inside nucleus
5
Q
Proton number=
A
Atomic number
6
Q
Electron number =
A
Proton number
7
Q
First shell
A
2 electrons
8
Q
Second shell
A
8 electrons
9
Q
Third shell
A
8 electrons
10
Q
Mass number=
A
Neutron number + proton number
11
Q
Atoms are made up of…
A
Electrons, neutrons, and protons
