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For all uninformed people and glassware users Answered

Because it wasn't instructable material, but needed to be said, i put it up as a thread now this can happen to anyone... ok only amatures but still, and maybe non-amatures *cough cough*. What not to do with glassware: First of all after heating glassware do not-- Cool it quickly Put pressure on it Touch it when boiling or heating liquids do not-- Cap you container Insert anything that may block the gas escape Now i know you thinking that this is common sense which for some people is true but i don't need the next generation of destructible chemists with sliced up faces and hands (*coMugh coEugh*) It can happen to non amatures who just got accidentally careless, i just had a test tube with water, potassium perchlorate, sodium hydroxide, iron, iron oxide, and a little bit of ethyl alcohol blow up on me and yes you can call me an idiot

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Tombini
Tombini

12 years ago

I remember me and my dad heating up marbles to red hot using an LPG torch, rhen dropping them in water... Nice bang

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its a lion
its a lion

13 years ago

yep, i have seen glass shatter from heating and then running cold water on it in person. that was a fun day in chem class... this holds true for clay too. i would assume metal as well, however i have never seen it crack after heating and then running cold water on it in person.

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ninjaimasta
ninjaimasta

Reply 13 years ago

i think the rapid super-heating and immediate cooling (done several times or more) doesnt crack the metal but it makes it more brittle, please correct me if i am wrong

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Tombini
Tombini

Reply 12 years ago

I can't remember which but it is called tempering or annealing... Used in industry

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Kiteman
Kiteman

Reply 13 years ago

It depends on the metal, how much the temperature changes and how quickly - some metals are made stronger by heating and cooling.

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Goodhart
Goodhart

Reply 13 years ago

Some clays and porcelain will do this. Most metals are a little more pliable and less subject to cracking (except under extreme conditions; don't heat metal to cherry red then plunge it into liquid nitrogen for instance). High carbon steel is a little less forgiving though.

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westfw
westfw

12 years ago

People like you are the reason science classes have been dumbed-down to the point that ... Arrgh, never mind.

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skunkbait
skunkbait

Reply 12 years ago

My grandfather volunteered at a highschool as an engineering tutor after he retired. Some kid thought it'd be cool to steal a block of metallic-sodium (about the size of a "hotel" bar of soar). He stuck it in his back pocket and would've gotten away with it. But then it got moist and WHOOSSHHHH!!! They took him to the hospital with serious burns to his back side. ... Talk about getting "justice in the end"!!!!

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lobo_pal
lobo_pal

Reply 12 years ago

Sweet.

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Goodhart
Goodhart

13 years ago

Some other things....it is best not to heat glassware directly on an electric element (they have wire standoffs to keep the heat even). Do not heat a "no heat" test tube (I watched the bottom drop out of one I was heating....it cut right around where the liquid level was *sigh*. Never put a cap on any glassware containing a chemical reaction either. And the most obvious one: don't "toss" a beaker to someone....they will miss it and then it becomes kind of useless :-)

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iman
iman

13 years ago

Idiot !!!! lol just kidding

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cowgomoo
cowgomoo

Reply 13 years ago

hahahahhaha your hilarious good job, your a comedian (sarcasm)