something else? Explain. I need help with this question. It's for science.
2007-03-13 10:35:32 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
water can hold more gas at colder temperatures than it can a warmer temps. when you pour a glass of cold water and let it sit out, the water warms up and cannot hold as much gas so it starts slowly releasing it. the bubbles you see are this gas clinging to imperfections and microscopic scratches on the glass's surface.
2007-03-13 10:50:13 · answer #1 · answered by Tom B 4 · 0⤊ 0⤋
The above answers have the right idea. But the reason why bubbles start to form when tap water is left out is because of two likely reasons:
1. Oxygen saturation is lowered as the temperature rises. This means that as water is heated, its capacity for holding oxygen drops. Many fish ponds are literally ruined because of heat; heat reduces O2 levels, and causes fish to die for lack of oxygen (fish breathe in water but they also need the O2 that is in water).
2. It may also be the case that saturation with O2 is higher in water from an underground well where pressure is higher; as the atmospheric pressure is reduced, more O2 seeps out of the water.
2007-03-13 17:48:00 · answer #2 · answered by bloggerdude2005 5 · 0⤊ 0⤋
water can begone oxygenated, thats how fish breath, it's just like your coke only that has CO2 instead of air, the bubles come out and replenish the same way. Basically when water is presurised with air it will absorb the gas inside in minute ammounts, then like a cloud the small pieces get together eventually and for the air pocket you see.I'ts not vapor though, it's just atmosphere.
2007-03-13 17:40:57 · answer #3 · answered by Justin H 4 · 0⤊ 0⤋
it's just 'air' plain old air... in the faucet, there is an aerator (sp?) that blends air with the water... those bubbles are just the air leaving the water.
example... why does regular cold water freeze with bubbles yet boiled water freezes clear.. the boiling removes all the air within the liquid.
I originally asked the ice cube question in physics in high school and the teacher was unable to answer... after much pondering, that is what makes the most sense.
2007-03-13 17:40:51 · answer #4 · answered by bilko_ca 5 · 0⤊ 0⤋
I THINK THEY ARE ASKING IF IT IS WATER VAPOR NOT HOW IT GOT THERE AND WHY YOUY THINK ITS WATER VAPOR
2007-03-13 18:07:52 · answer #5 · answered by ltlbpv 2 · 0⤊ 0⤋