Multiple choice general knowledge

What is it that makes soda water fizz?

  1. Oxygen

  2. Hydrogen

  3. Nitrogen

  4. Carbon Dioxide
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The fizz in soda water comes from dissolved carbon dioxide (CO2) gas under pressure. When the pressure is released (by opening the bottle), the CO2 comes out of solution, forming bubbles. Oxygen, hydrogen, and nitrogen are not used in carbonated beverages. The carbonation process was discovered by Joseph Priestley in 1767.

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