Question

in the example of separating salt from water using evaporation, what is left behind in the kettle? sand iron filings water salt crystals

Explanation:

When separating salt from water using evaporation, the water turns into vapor and escapes, leaving the non - volatile salt behind. So in the kettle, salt crystals will be left. Sand and iron filings are not part of the salt - water mixture in this example, and water evaporates, so they are not left behind.

Answer:

D. Salt crystals