What's the difference between limes and lemons?

Limes are green. Lemons are yellow. That's where my knowledge ends.

Calcium hydroxide

calcium carbonate

Lime water is the common name for saturated calcium hydroxide solution. Its chemical formula is Ca(OH)2. while calcium carbonate CaCO3 is called lime stone

Lime water is the common name for saturated calcium hydroxide solution. Its chemical formula is Ca(OH)2