drsckng3 Posted December 21, 2007 Share Posted December 21, 2007 If I wanted to open the jar of jam but the lid was too tightly capped I would pour very hot water on the metal lid, and I could open it easily, why does it work? If the lid is made of plastic, would pouring very hot water on this plastic lid work just as well, ? why is it so? Link to comment Share on other sites More sharing options...
Cap'n Refsmmat Posted December 21, 2007 Share Posted December 21, 2007 Remember, heat makes things expand -- if the lid expands, it doesn't fit as tightly on the jar. Link to comment Share on other sites More sharing options...
insane_alien Posted December 21, 2007 Share Posted December 21, 2007 more specifically, the lid expands more than the jar which makes it looser. Link to comment Share on other sites More sharing options...
MrMongoose Posted December 21, 2007 Share Posted December 21, 2007 Did you not already ask this in the homework help section and get a perfectly adequate answer? Link to comment Share on other sites More sharing options...
swansont Posted December 21, 2007 Share Posted December 21, 2007 Yes. I'll close this and copy the relevant answers to the other. Link to comment Share on other sites More sharing options...
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