Question

30 which substance can be separated into its components by a physical process? a salt (nacl) b hydrogen gas c saltwater d gold

Explanation:

A physical process can separate components of a mixture. Salt (NaCl) is a compound, hydrogen gas is an element, and gold is an element. Saltwater is a mixture of salt and water. Evaporation, a physical process, can separate salt from water in salt - water.

Answer:

C. Saltwater