Reaction 3-Cupric Hydroxide to Cupric Oxide

Cu(OH)2(s) --> CuO(s) + H2O(l)

Add distilled water until it reaches 100 ml in the beaker. Heat mixture until it turns black-ish. Filter it.

Thanks for being precise, Anna!

Anna added the perfect amount of distilled water by bringing the meniscus up to the 100 ml line on the beaker!

It changed colors!

We love chemistry!