Atomic mass. Which is the number of protons and neutrons combined.
Sugar and water are made with tiny particles. They are both made from molecules and atoms.
Magnesium has 22 electrons and 24 protons
Tt. i’m not fully sure but dominant traits usually always overpower recessive so i’m pretty sure in order for a recessive trait to show both parents need to give the recessive trait in order for it to show. i mean it’s in the words dominant and recessive