It’s “c. +1” because the Sodium is losing a proton, which has a positive chage
Methods Of Separating Mixtures
Handpicking.
Threshing.
Winnowing.
Sieving.
Evaporation.
Distillation.
Filtration or Sedimentation.
Separating Funnel.
Another name for chemical change would be chemical reaction.
Physical property is C.Density