Situation:
From the evaporation setup. The seawater is transfer to the improvised aluminum foil (alternative for evaporating dish) which is shaped like a bowl. Heat is applied to the seawater until all the liquid has evaporated. Then cool using the hand lens, the solid that is left is examined.

Questions:
B1. What physical method is used to separate mixture in the above setup?
B2. What do you call the solid that was left after all the liquid has evaporated?
B3. From the situation, What solid component can be derived from seawater mixture?

BRAINLIEST​