Question
What is soda water? Why do bubbles occur when you unscrew the cap? What happens if you make the bottle hot?
Answer
Soda water is carbonated water that has been infused with carbon dioxide gas under pressure.
When you unscrew the cap of soda water, the pressure inside the bottle is released, causing the carbon dioxide gas dissolved in the water to come out of the solution and form bubbles.
If you heat up a bottle of soda water, the solubility of carbon dioxide in water decreases, causing the carbon dioxide gas to come out of the solution and form bubbles. This can cause the bottle to burst or foam over if the pressure inside the bottle exceeds its capacity.
