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# Why is hot water poured to a drinking glass more likely to break the glass?

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###### 2009-09-24 17:06:39

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.

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## Related Questions

The expansion of the glass makes it break (the inside of the glass, which is in contact with the hot water, tries to expand more than the outside; the tension makes the glass break).

The outer side of the thick glass expands at a different rate from the inner side. This sets up a tension that is different from the other side. So it cracks. Most drinking glasses are fairly able to cope with hot water as they are not thick. Fairly good sense, as no one will buy drinking glass that cracks each time hot liquid is poured in and no manufacturer can afford such negative situations. Most glass bottles can handle hot water without cracking. Besides the cost of thick glass, it makes more sense to make bottles of a thickness that optimises both cold and hot storage. follow me on twitter @alpianilham

When you pour a really hot or really cold liquid into a glass, the sudden expansion or contraction will cause it to break. This is especially true with thicker glass because the temperature of the surface of the glass will differ from the temperature of the inside of the glass, making it more likely to crack. This difference in temperature doesn't affect thinner glass because the outer and inner temperatures are going to be more similar.

Because the heat of the water makes the particles in the glass vibrate too fast which results in breakage

Some glasses break when you pour boiling water in it. To avoid that make sure you read a label that comes with that glass saying it can withstand boiling water or not.

When materials are heated they expand, when the expansion is too quick in some materials such as amorphous silica (glass) the structure breaks.

He got a glass and poured out a drink of water for himself.

Originally, nobility feared that they might be poisoned. Therefore, they poured wine from glass to glass to ensure that no one present had placed poison in their glass of wine. Because it's the proper thing to do.

The inner glass layer expands when hot water is poured into it while the outer layer is still cool, hence the glass cracks

Because they make the glass less likely to break during extremes in temperature.

Yes, "He poured water into the glass." is a grammatically correct sentence as long as the first word is capitalized and there is a period at the end.

There are 8 ounces in an average drinking glass.

Why r u asking this question =| Well look at the name,drinking GLASSES That's why glass is used for drinking GLASS =]

You won't get HIV by drinking from someones glass.

A glass dropped on a concrete floor is more likely to break than if it was dropped on a wood floor because the concrete has no bend to it. A wood floor might help absorb some of the impact by bending slightly when the glass hit it.

you have to have a very high voice to break a glass and this is what you have to do to break a glass you can break a glass because a glass is very resonant and frequency. and you also can break a glass by holding your high voice for two or three seconds and then the glass breaks. no its impossible for just your plain high voice you have to have a high microphone (with speakers) to break a light wine glass.

No you can not get HIV or AIDS from drinking from an infected person glass.

the proper way of refilling a drinking glass is to pour the liquid into the side of the inside of the glass slowly.

Yes, porcelain can break glass. Glass can break porcelain, too. Both are brittle and can be broken by impact.

Very cheap or extremely thin glass can, yes - that's why modern heatproof glass was developed. Any glassware designed for kitchen use is safe from breakage if hot liquids are poured into it, but any glass might break if it becomes very hot, and then is suddenly plunged into cold water. Glass cracks because of the temperature difference between the inner and outer layer, glass is a poor conductor, so the inner layer expands faster than the outer layer, this stress is what causes the crack, so the thicker a glass is, the longer it takes for the heat to transfer to the outer layer, so the more likely it is to crack.

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