Step-by-step in­struc­tions 

Sprin­kle a tea­spoon of bak­ing soda into the glass, add sug­ar to taste, squeeze a lemon and add wa­ter. The soda is ready!

Process de­scrip­tion

Lemon juice con­tains fruit acids. When they re­act with bak­ing soda, car­bon diox­ide forms. It dis­solves poor­ly in wa­ter, and so it is re­leased in the form of bub­bles. So our drink be­comes fizzy.