Atomic Structure Flashcards
1
Q
The rows are known as…
A
Periods
2
Q
Elements of the same period have the same number of
A
Electron shells
3
Q
The columns are known as…
A
Groups
4
Q
Elements with the same group have the same number of…
A
Electrons in the outer shell
5
Q
An element is…
A
A substance that cannot be broken down into anything simpler
6
Q
A compound is…
A
Two or more different elements chemically bonded together
7
Q
Molecules are…
A
Two or more atoms bonded together (they don’t have to be different)
8
Q
Elements such as O2 and Br2 are…
A
Diatomic molecules
9
Q
Mass number is…
A
The number of neutrons plus the number of protons
10
Q
The atomic number is…
A
The number of protons
11
Q
Isotopes are…
A
Atoms with different numbers of neutrons e.g. Chlorine
