If I fill glass jar with tap water and let it stay, small bubbles will appear on the side of jar after a while.
I am wondering what processes create those bubbles and what conditions require to meet?
- Water impurities, i.e. dissolved salts, minerals. I.e. distilled water shall not have it.
- Water pressure. I.e. if I fill and close jar with the same water under higher pressure, air pressure of dissolved molecules of air will not be sufficient to create bubbles.
- Surface tension. If, instead of water I will use another liquid with higher surface tension - bubbles will not be formed. Then how to calculate "threshold" tension number?
- Air composition. Molecules of dissolved gas that has higher hydrophobic properties will form gas bubbles faster.
Anything else I did not mention.