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Why a tightly fitting cork on a test tube is blown off if the test tube is heated?
Wiki User
∙ 14y ago
The air molecules inside the test tube have a higher mobility when heated (they move around more). The collisions between these air molecules create more pressure on the inside of the test tube (force/area, where the force is the result of the increasing collisons and the area is the internal wall of the test tube.) This may result in the pressure inside of the test tube to be greater than the outside atmospheric pressure on the cork (actually atmospheric pressure on the cork and the frictional force on the cork created by the mouth of the test tube). If the internal pressure becomes greater than the external pressure (plus frictional force) the cork will come loose of the test tube.
Wiki User
∙ 14y ago
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What is the density of a cork?
The density of a wooden cork stopper is about 0.25 grams per ml. This value can be important in experiments where a cork stopper is used.
Is a cork a insulator?
Cork does not have the "free electrons" that are necassary for current flow. In other words, cork holds onto its electrons better than an object such as metal does.
Which has less density a cork or water?
A cork is less denser than water because cork is floating on water so it will have less density than water
Is cork a good conductor of heat?
Cork can be used in a lot of ways. Because it floats a magnetized needle placed on top of a piece of cork will act as a compass. This simple device can also respond to a permanent magnet and show action at a distance. Cork can also be used to seal a flask against low pressure leakage.
A cork floats on the water as a wave passes by What happens to the cork Will the cork's vibrational frequency be related to the water wave's frequency and if so how?
The cork will move up and down with the wave, since the wave is a transverse wave. I would think that the frequency should be the same as the wave.
What would happen to a bottle with a cork when heated up?
Because the air inside the bottle push out the wooden cork.
How do you make a clarinets cork smaller?
if your clarinet is having trouble fitting together try some cork grease!
What is underneath a hard cricket ball?
A core of cork, that is layered with a tightly wound string
What kinds of accessories can be used on cork boards?
The kind of accessories that can be used on cork boards are rubber and concrete. Cork board is a kind of sheet that is created from cork, it uses the pieces of cork that have been heated up and compressed into one.
What hazards are associated with heating a liquid in a test tube that is tightly closed with a cork?
creates pressure
How do you remove male pipe threads broken off on the inside of a female pipe fitting?
Use a pair of plyers and two small pieces of cork to grab the threaded pipe while you rotate the female fitting. Also, if you don't need the threaded piece anymore, you can use a whole cork inserted into the threaded pipe with a bit of apoxy or super glue.
Does the flask contain the same more or fewer gas molecules compared to before it was heated?
The same if it was closed (i.e cork). If it was open, it would be less, as gas usually expands as it is heated, and it depends on the amount of heat, the pressure, temperature etc.
What is the origin of cork?
Cork comes from a cork tree :]
How do you make cork?
cork comes from a cork tree
What is the physical properties of a cricketball?
Physical composition: 1) core of cork; 2) tightly-wound string; 3) leather. Weight: between 155.9 and 163.0 grammes. Colour: usually red or white.
What does cork mean and what is cork?
cork is a type of color like brownish
What does cork mean in numbers?
'cork' is the bark of the cork oak tree.
