Me
look at the picture linked

Halogen--Florine

Chalogen-- Oxygen

Alkali Metal-- Sodium

Boron -- Metalloid (atomic symbol B)

Lanthanide series-- (Number 57-71 on periodic Table) Example: Cerium #58

Alkaline Earth Metal--Magnesium

Transition Metal-- Gold, Iron, Silver. Etc... (Middle section of a period table)

Nobel Gas--Helium

answers: to make sure that all of the broken pieces of tablet were added to the water, to allow for fair comparison of all three trials, with different particle sizes to avoid experimental error

because of all the things that happen around the us, many people get into arguments which sadly could get physical, but we should actually make a change for that.