In the presence of water, white anhydrous copper sulfate turns blue. 💧
With other transparent liquids that do not contain water, it remains white.
All beverages contain water. 🥤💧
Most foods contain hidden water. 🍎🥦💧
We need 2.5 liters of water per day: 💦
* 1 liter is provided by food.
** 1.5 liters is provided by beverages.
💡 Ready to test your knowledge?