would you see air bubbles? if so why? j aged 10
2007-01-10 23:17:15 · 11 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
You do see air bubbles, but they have nothing to do with oxygen from the H2O. They are formed because air is dissolved in the water at low temperatures. When the water temperature increases the air becomes gas again forming little air bubbles, which you can see. If you leave it for long enough the water will evapourate so you see the level of the water go down and you also see rings on the glass as the minerals dissolved in the water get left behind on the glass.
2007-01-10 23:53:35 · answer #1 · answered by Ellie 4 · 1⤊ 0⤋
If you didn't get an algae bloom(green slime) growing, then the water would evaporate (turn to gas) off, leaving a residue (bits that are left) of various soluble (dissolve in water - like the salt for your fish and chips would) salts that were dissolved in the tap water.
As with salts, at different temperatures & volumes (amounts) of water, different gases have more or less dissolved in the water, as there is eventually not enough water to keep this dissolved the gasses appear as tiny bubbles, and evaporate off.
2007-01-11 07:25:21 · answer #2 · answered by Daedalus 3 · 0⤊ 0⤋
Eventually you would see bubbles due to gases escaping because of the change in temperature. (Water from the tap is quite a bit cooler than room temperature, especially at this time of year if the heating is on)
2007-01-11 07:20:53 · answer #3 · answered by bonshui 6 · 0⤊ 0⤋
Well you might see a little precipitate, especially if you have hard water. The air bubbles that you may or may not see (they may be too small) is the water degassing CO2, which in turn raises the pH, and the minerals, including calcium, magnesium, and iron, all precipitate out.
Precipitate means to become "undissolved" simply put.
2007-01-11 07:22:11 · answer #4 · answered by just browsin 6 · 2⤊ 0⤋
yes you would see air bubbles, i think its because water is made of a hydrogen atom and two oxygen atoms, (H2O) the oxygen atoms stick together and create bubbles in the water and the hydrogen evaporate into the air so the water level would also recede. hope i have helped.
2007-01-11 07:22:18 · answer #5 · answered by kellythered 2 · 0⤊ 0⤋
it depends on what a while is. eventually things like dust and bacteria would get into the glass, assuming your water is in a glass, and it could become murky. chances are not much would happen to it except for the water evaporating into the air, in which case you would see less of it over time.
2007-01-11 07:22:55 · answer #6 · answered by prophetfxb 1 · 0⤊ 0⤋
Water contains Oxygen, which is needed to breath. The Oxygen starts to get together making bigger clumps of oxygen until you can see the Oxygen in the water. Since there is so little Oxygen, they just "cling" to the side of the glass until they have enough Oxygen to rise to the top.
2007-01-11 07:27:55 · answer #7 · answered by mitch_foulish 2 · 0⤊ 0⤋
i think the air bubbles come from the heat in the air, maybe it warms up the bottle a bit making the air bubbles.........thats my guess lol
2007-01-11 07:20:55 · answer #8 · answered by Anonymous · 0⤊ 1⤋
Is it something to do with limescale raising to the top of the glass? Or maybe skin molecules getting in the top of the water? lol sorry
2007-01-11 07:21:28 · answer #9 · answered by wragster 3 · 0⤊ 1⤋
An empty glass caused by evaporation
2007-01-11 07:20:13 · answer #10 · answered by James T. Kirk 2 · 0⤊ 0⤋