Periodic Table Flashcards
1
Q
Do the groups go up and down or side to side
A
Up and down (columns)
2
Q
Do periods go up and down or side to side
A
Side to side (rows)
3
Q
What do elements in the same group have in common
A
- Similar properties (react in the same way in the presence of certain substances)
- Number of valence electrons
4
Q
What do elements in the same period have in common
A
- Same number of electron shells
5
Q
What three things make up an atom
A
- Protons
- Neutrons
- Electrons
6
Q
What is in the nucleus of an atom
A
- Protons
- Neutrons
7
Q
What is in the shells surrounding the nucleus of an atom
A
- Electrons
8
Q
How many electrons can go in each shell?
A
Shell 1: 2 electrons
Shell 2: 8 electrons
Shell 3: 8 electrons
Shell 4: 2 electrons
