2: Pour half a bottle of cold boiled water into a transparent glass bottle and put a spoonful of sugar. Stir it with chopsticks.
3: Pour baking soda into the glass bottle. Stir with chopsticks and drop two drops of fruit essence into the glass bottle.
4: Pour in citric acid, immediately cover the bottle cap, and a bottle of soda is ready.
The practice of marble soda:
Make soda water to understand the influence of pressure on gas solubility.
Equipment:
Pinball soda bottle 1 cup 1 cubic 2
Baking soda tablets 3 vinegar 40ml boiling water 160ml.
Steps:
1. Put 2 cubes of sugar into a cup, add 160ml of water and 40ml of vinegar, stir until the sugar is dissolved, and then pour in marble soda.
2. Take 3 pieces of baking soda and put it in a marble soda bottle. Press the bottle mouth with your thumb immediately. Shake it a few times and turn the marble soda bottle upside down so that it won't leak.
3. When the thumb feels flatulence, release the thumb and the marble will block the bottle mouth.
After the baking soda is dissolved for about half an hour, you can press the marbles down and knock Sue out for seasoning.