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Bubbles are basically due to the dissolved air in the water.so when we boil the water,the air gets hotter & comes up in the form of bubbles.
ans2. Nice answer above, but wrong. Sorry.
Even previously boiled water will have bubbles near the heat source.
The bubbles are a few molecules of water, instantaneously (or nearly so) expanding into steam.
Steam occupies about 1600 times the volume of the original water - the molecule! [In an ambient atmosphere at stp. i.e. your kettle. (stp = standard temperature and pressure)]
So this expansion is very rapid, and according to the "equal reaction" phrase, an equal force is generated on the vessel as is exerted on the water around.
The actual expansion point seems to occur at a minor imperfection on the surface of the boiling vessel. Hence our use of bumping devices added to flasks when we are boiling chemicals - we deliberately supply discontinuities.
The same effect may be seen in a glass of soda or of sparkling wine. The dissolved bubbles will only exolve from a particular point. In this case there is not an explosive expansion.
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Will air bubbles appear if boiled water is reheated?
The bubbles are water vapour (ie steam) bubbles, not air. Therefore any heating of water back up to boiling point will renew the process of water vapour bubbles occurring.
How do bubbles form in boiling water?
When water boils, the heat converts some of the water to steam and each bubble is a steam bubble. Steam is a gas that is lighter than water, and so the bubbles rise to the surface of the water where the steam is released. As the steam cools in the air, it forms water vapor, and that is what we see. Most people call the vapor "steam", but steam is a transparent gas, like air.
When water is boiled in a pot it bubbles Is this the result of a chemical reaction Explain why or why not?
It is a physical change because it is evaporation. Physical changes can be undone. If it was a chemical reaction it would be permanent like burning wood.
Can I Substitute boiled water for distilled water?
No. They are not the same. Distilled water is only water. Boiled water will likely contain minerals.
Why small bubbles are formed on water before it boils?
Boiling is not as fine a process as it might seem. Evaporation increases gradually until boiling is reached. Boiling occurs when there is sufficient heat to immediately turn the water to its gaseous state. The bubbles you see forming at the bottom of a pot for example are water vapor having been boiled to gas and tend to form at the bottom because that is where it is hotter- near the heating source. You'll see steam coming off of heated water but the bubbles that are forming during boiling are water being turned to gas. Essentially the bubbles are a less intense form of boiling. As you get hotter water the bubbles will form more rapidly and will "boil" as you're more familiar with it.
What kind of water does not have air bubbles?
Boiled Water.
What is in the bubbles that you see when water is boiling?
If there are big bubbles that pop then it is boiled
Will air bubbles appear if boiled water is reheated?
The bubbles are water vapour (ie steam) bubbles, not air. Therefore any heating of water back up to boiling point will renew the process of water vapour bubbles occurring.
If water is boiled will it turn into water vapor or steam?
When you boil water, a lot of air-bubbles appears on the surface. it is the water turning into steam.
Why does bubbles ran away from each other when water is boiled?
Because they don't like each other. This is currently on unfriendable.com
Is boiled water distilled water?
No, boiled water is simply boiled. Distilled water is when the steam from the boiling is gathered and rebottled.
How do bubbles form in boiling water?
When water boils, the heat converts some of the water to steam and each bubble is a steam bubble. Steam is a gas that is lighter than water, and so the bubbles rise to the surface of the water where the steam is released. As the steam cools in the air, it forms water vapor, and that is what we see. Most people call the vapor "steam", but steam is a transparent gas, like air.
Which dissolves faster salt or water in boiled water?
Boiled water.
How does the water ripple or move without bubbles when boiled?
In the period immediately before vigorous boiling, there will be large thermal convection currents. These will be visible due to refractive differences in the water volume, and disturbances on the surface.
When water is boiled the water changes from?
When water is boiled it changes from liquid to a gas.
Do plants grow faster in salt water or boiled water or plain water?
boiled water
Why milk overflows when boiled and not water?
Let's note some observations. When water is boiled, the liquid water gains thermal energy, becomes steam, comes to the top as bubbles and burst to go into the atmosphere. Similarly, when milk is boiled, the water turns to steam bubbles which move to the surface of the milk in the form of bubbles. But they cannot burst to the atmosphere easily because of the layer of fat on milk. The bubbles moving to the top continue to push the fat layer due to their kinetic energy. They cannot burst since they the pressure inside the bubble is less than that of the outside. When the fat layer surpasses the vessel walls, it results in the overflowing of milk. If you boil the milk after once allowing it to boil over or removing the fat layer, the boiling will induce overflow with lesser intensity when compared to that with the the fat present. The lesser boiling over takes place because of the remaining fat in the milk. Water does not boil over because it does not have any top layer which prevents the bursting of gas bubbles.
