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When water in a glass tube is heated the level of water in the tube?
Wiki User
∙ 13y ago
Falls and then rises
Wiki User
∙ 13y ago
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Does liquid water rise higher in a narrow tube or a wide tube?
Rise or fall of liquid in a small passage or tube. When a glass tube of small internal diameter is inserted into water, the surface water molecules are attracted to the glass and the water level in the tube rises. The narrower the tube, the higher the water rises. The water is said to "wet" the tube. Water will also be drawn into the fibres of a towel, even if the towel is in a horizontal position. Conversely, if a glass tube is inserted into mercury, the level of the liquid in the tube falls. The mercury does not wet the tube. Capillarity is caused by the difference in attraction of the liquid molecules to each other and the attraction of the liquid molecules to those of the tube.
Why do we heat the test tube in a water bath and not directly over a flame?
so they dont explode Because of the thickness of the glass. Glass that is thin, as in test tubes expand with heat rather quickly and this makes them very fragile. The water bath heats them up slowly.
How does a percolator produce coffee?
It doesn't, coffee is grown. The way a percolator works is by the change in the density of water when it is heated. Water is placed in the percolator then the riser tube is placed in and the filter cup with ground coffee in it is placed on the top of the tube, ABOVE the top surface of the water. The water is heated at the bottom of the pot, this hot water rises and is directed up the tube, cold water replaces it at the bottom of the pot, this cold water as the density is much higher forces the hot water up the tube where it overflows into the filter basket and percolates back down through the coffee grounds, then back to the pot to be cycled through again. The percolation slows down as the temperatures in the pot equalize, or the water level is lowered.
If heating continues the water in the glass tube will most likely?
turn into a solid
When heated what happens to ammonium chloride mixed with water in the tube?
nothing happens. it becomes an aqueous solution of ammonium chloride
How do you know when to bend the glass tube?
When the heated glass first begins to sag.
How far above the lowest permisseble water level is the bottom of the gauge glass in a fire tube and water tube boiler?
3inces
What is the effect of breakage of glass tube of water level indicator?
Having the glass tube breaking all the time effects production and creates loss time for the any production unit.
What is the effect of breakage of of glass tube of water level indicator?
Having the glass tube breaking all the time effects production and creates loss time for the any production unit.
Why does the water level of the liquid in the test tube drop a little first before rising when putting the test tube into the cup of warm water?
The glass expands first, increasing its capacity and lowering the water level. Then water then expands increasing its volume and thereby raising the water level.
What is a glass tube?
Maybe a tube made of glass?Is there something more to this question I don't get?
How do scientists form glass parts that they need from glass tubes?
By pulling on both ends of heated glass. The more they pull, the smaller the diameter of the resulting glass tube or capillary.
Why does water in a glass tube contracts first then expand when heated?
glass is a bad counductor of heat, so at first the glass flasks expands and its volume inside increases. the liquid which has not started to expand yet, drops to fill the extra volume inside
Does liquid water rise higher in a narrow tube or a wide tube?
Rise or fall of liquid in a small passage or tube. When a glass tube of small internal diameter is inserted into water, the surface water molecules are attracted to the glass and the water level in the tube rises. The narrower the tube, the higher the water rises. The water is said to "wet" the tube. Water will also be drawn into the fibres of a towel, even if the towel is in a horizontal position. Conversely, if a glass tube is inserted into mercury, the level of the liquid in the tube falls. The mercury does not wet the tube. Capillarity is caused by the difference in attraction of the liquid molecules to each other and the attraction of the liquid molecules to those of the tube.
Water will move higher in a narrow glass tube than in a wide glass tube because of?
It is because of Capillary action, the adhesive forces for water are effective in narrow tube, in a wide tube the weight of water resists the upwards movement of water.
When a mercury therometer is heated the mercury expands and rises in the thin tube of glass What does this indicate about the relative rates of expansion for mercury and glass?
It indicates that the mercury expands much faster in reaction to change in temp. If the glass expanded at the same rate as the mercury does, the level of mercury would not change.
Why the glass apparatus may break when it washed immediately after heating?
This is mainly due to the difference in temperature. Once glass (let's take a test tube for example) has been heated, the glass itself assumes this temperature also. If you pour or immerse this heated test tube in cold water, it causes the glass to contract; this contraction causes the glass to crack and of course shatter. Glass as you're aware isn't very flexible or elastic and instead is brittle so this happens fairly easily with standard laboratory equipment. Hope this answers your question.
