system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do little air bubbles collect on the side of a sealed water bottle when it's left in room temperature for a while?
gpt
Air can become dissolved in water. When the water sits still for long enough the air will come out of solution and stick to the inside of the bottle. This is made more obvious when you take a cold liquid and warm it up. Colder water can hold more gas than warm water can. So, as the water warms up the dissolved air will no longer be dissolved.