Homework
for Physics and Chemistry:
Sodium
is in group 1 and in period 3. Chlorine is in group 7 and in period 3, such as
Sodium. This could be the reason of why they react. Aluminium isin group 3, in
period 3 too. Oxygen is in group 6, in period 2.Boron is in group 3, in period
2 as well. Sulfur is in group 6, in period 3. Copper isn’t in a group. Potassium is in group 1, in period 4. Bromine
is in group 7, in period 4. Iron is a metal, so it doesn’t have any group.
Iodine is in group 7, in period 6.
Conclusion:
All of
the molecules which have two different elements dissolve in water. All of the
molecules which have more than 2 different elements don’t dissolve in water. Every
molecule which has only one element, or an element in group 1, doesn’t dissolve
with any organic substances.
