We can do many interesting chemical tests in our class. Today, we will use CO2 to blow up a balloon! Mixing baking soda(小苏打) with vinegar(醋) together can give off the CO2
What you'll need
1)A balloon 2)About 40 ml of water 3)A soft drink bottle 4)Vinegar
5)A teaspoon of baking soda Instructions
Instructions
●Before you begin, make sure that you pull the balloon long to make it as easy as possible to blow up.
●Put the 40 ml of water into the soft drink bottle.
●Add the baking soda and mix it with water.
●Put the vinegar in and quickly put the balloon over the mouth of the bottle.
What's happening?
If all goes well then the balloon should become bigger and bigger! Adding the vinegar to the baking soda creates a chemical effect. The baking soda is a base(碱), while the vinegar is an acid(酸). When the two are mixed, they'll create CO2. The gas rises up and runs away through the soft drink bottle. However, it doesn't get away from the balloon, pushing it outwards and blowing it up.
