I think it's covalent...? Hope that helps.
A heat because heat is the transfer of energy.
No technically without buying anything your hair will not grow .
Answer:
You can separate a mixture of sand, salt and water by decantation and evaporation. Decantation will separate sand from salt and water. Sand remains in the original vessel, whereas salt and water is transfered to new vessel. Evaporation will separate salt from water.
