Mystery #4Tier 2gases / states
Why does a fizzy drink go flat?
A freshly opened fizzy drink is alive with bubbles — but leave it out for a few hours and it turns into dull, flat sugar-water. Nothing was added or spilled. So where did all the fizz go?
Your guess
What's your hunch — where do the bubbles go when a fizzy drink goes flat?
Make a guess to unlock the hints and the answer.