Do the groups go up and down or side to side
Up and down (columns)
Do periods go up and down or side to side
Side to side (rows)
What do elements in the same group have in common
What do elements in the same period have in common
What three things make up an atom
What is in the nucleus of an atom
- Neutrons
What is in the shells surrounding the nucleus of an atom
How many electrons can go in each shell?
Shell 1: 2 electrons
Shell 2: 8 electrons
Shell 3: 8 electrons
Shell 4: 2 electrons