How to make a model of a soda acid fire extinguisher?

To make a model of a soda acid fire extinguisher, you'll need a clear plastic bottle, baking soda, vinegar, and a small balloon. Fill the bottle with a few tablespoons of vinegar, then place a few teaspoons of baking soda inside the balloon without letting it fall into the bottle. Secure the balloon over the bottle's opening without letting the baking soda spill in. When ready to demonstrate, release the baking soda into the vinegar, which will create carbon dioxide gas and build pressure, simulating how the extinguisher works.