<span>A PRECIPITATE is a solid that forms inside of a mixture. When we add lemon juice to milk, the lemon juice causes lumps to form inside of the milk. SOLID lumps. We call them "curds." So, we end up with SOLID curds, formed inside of liquid whey.
Alkali metal hydroxides can be used to test the identity of metals in certain salts. The colour of the precipitate will help identify the metal : Calcium hydroxide is soluble; no precipitate is formed.
