When you boil a pot of water until it all boils off, what is the whitish, dusty residue that remains on the bottom of the pan?

Question

Is it just minerals/other impurities in the water?

In: Chemistry

Answer 1

Chemical deposits from the “hard Hoosier water.” I got sick and tired of cleaning my goose neck kettle once a week so I resorted to purchasing gallons of distilled water. Nary a chemical deposit to be found. And just recycle the jugs. Drink coffee and repeat.