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When temperatures changes this can cause the molecules in an object to contract [ at low temperatures ] or to expand [ high temperatures ] . Glass is a fragile object and if the molecules in glass contract or expand quickly this can cause the glass to break . [SRM] .
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∙ 12y ago
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Why is hot water poured to a drinking glass more likely to break the glass?
The hot water will increase the temperature of the glass and cause the inside of the gas to expand faster than the outside.This will exert a force on the glass and the glass may crack.
What would cause a glass table to break on its own?
Severe changes in temperatures can shatter glass which often happens in car windshields. If there is a chip or crack in the glass and water penetrates it and freezes it can shatter glass especially if it is tempered. Heating can expand the tables frame and crush the glass but other than an object falling or direct pressure...ghosts?
Why does an empty glass cracks when you pour very hot water into it but does not crack if there is a metal spoon in it?
It will crack because like clay in a hot oven, if all the spots are not covered correctly, it will have a chance of cracking, but when the hot water gets into the crack, it will start to make it bigger. If the expansion is uneven, the glass will break and I don't understand why it won't break with a metal spoon.
How fast does glass break?
Glass does not typically "break" at any temperature. If you want to be technical, the melting point of glass is 2600-2900 °F. Now, another important and relevant fact is that when things are hot, they grow very slightly larger due to their molecular composition. When something is very hot and is suddenly made much cooler, it will quickly shrink back to normal. When fragile things like glass are cooled down too fast, the shape change is enough to crack or break them.
Would a common mercury thermometer be feasible if glass and mercury expanded at the same rates for changes in temperature?
no
Why should you never pour hot liquids into a drinking glass?
Rapid temperature changes can cause glass to crack. For the same reason you should never wash a hot glass with cold water.
Why is hot water poured to a drinking glass more likely to break the glass?
The hot water will increase the temperature of the glass and cause the inside of the gas to expand faster than the outside.This will exert a force on the glass and the glass may crack.
What causes glass door to crack without something hitting it?
Ive seen this happen when dramatic changes in temperature happen e.g. its hot outside and you get cold water the window..
Why is pyrex not breakable?
Pyrex is made from glass that withstands high heat and temperature changes. Though not easily broken, it is not totally unbreakable. It just does not shatter when broken or break as easily as other glass.
What would cause a glass table to break on its own?
Severe changes in temperatures can shatter glass which often happens in car windshields. If there is a chip or crack in the glass and water penetrates it and freezes it can shatter glass especially if it is tempered. Heating can expand the tables frame and crush the glass but other than an object falling or direct pressure...ghosts?
Why would it be easy to crack a glass bottle when filled with water and subjected to a flame?
The temperature contrasts would cause differential expansion of the bottle which, being brittle, would cause the glass to crack.
Why glass suddenly break or crack?
Can be a few reasons: 1 - Uneven surface/flooring 2 - Brittle and old glass or silicone 3 - Pistol and mantis shrimp have been known to crack thin glass aquariums 4 - Brute force
Does a glass tumbler containing hot water crack if you cool it by pouring cold water on it?
Yes it does due to the rapid temperature drop on the glass.
Why can't you operate a lava lamp on a glass surface?
Glass melts at between 900 degrees F and 1650 degrees F while the lamp operates at an estimated 100-130 degrees F, however, differential temperature changes, especially rapid changes in temperature may cause a glass surface to crack. The lamp is made of glass, and the bottom of the lamp usually has a felt pad, so there is no mechanical reason why the lamp may not be used on a glass surface except it may slip, and the manufacturer's instructions specifically state DO NOT operate the lamp on glass surfaces.
Can sliding glass doors be repaired or is it better to replace?
Sliding glass door can be repaired. If it is a mechanism issue or a small crack then you will want to look into repair. If it is a large crack or break in the glass or you have multiple or repeated issues then you may want to consider having it replaced.
Why is it necessary to use only one direction in cutting a glass tubing?
Cutting in one direction in glass tubing will reduce the places the glass will crack and break. Cutting in multiple directions greatly increases the chance of the glass tubing completely shattering when you break it off.
Can the glass break while glass blowing them?
Yes, the glass during glass blowing can break if the worker isn't careful. Whether it breaks depends on many factors, such as temperature of the material, how thinly the glass is blown, and skill of the glass blower.
