This ex­per­i­ment is good be­cause you not only study a chem­i­cal process, but get a re­ward – a glass of re­fresh­ing soda!

Reagents and equip­ment:
* lemon;
* bak­ing soda;
* sug­ar;
* glass;
* wa­ter.

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!

Pro­cess­es 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.

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