Y means families and are vertical (alkaline, alkaline earthmetals, halogens, transition metals, noble gases, etc)
x means periods andare horizontal (1,2,3,4,5)
Convection, a and b dont have to do with water and condensation has nothing to do with deep water, its only a little bit of water
Answer:
The Law of Conservation of Mass dates from Antoine Lavoisier's 1789 discovery that mass is neither created nor destroyed in chemical reactions. In other words, the mass of any one element at the beginning of a reaction will equal the mass of that element at the end of the reaction.
Hope it's helpful to you
