Every time I boil a kettle for tea/coffee for my fellow slaves where I work something has been perplexing me.
The bubbles when it boils appear to come from the bottom of the kettle or the
water itself.
1) Whats in the bubbles?
2) Does this mean the boiled water is depleted of whatever element/s that make up the bubbles.?
3) Why doesn't the volume of water go down much more than just the amount due to the steam (lots of bubbles= lots of volume?).
Thanks to anyone who is bored enough to reply.