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Both the materials of the lid and the container will expand with heat, like that provided by hot water. However, different materials expand at different rates. If you use a glass container with a tin lid, heating it with water will make the tin expand more than the glass, thus the lid becomes loser (has less contact with the glass) and it is easier to remove.
If it was the other way around, glass lid and tin container, heat would only worsen the situation, but you could do the reverse: cool the container so it becomes smaller than it was.
Other combinations that would work are lids made of plastic with containers made of metal or glass.
Wiki User
∙ 13y ago
Wiki User
∙ 12y agoWhen a object is heated, the particles (molecules and atoms) spread out and move faster resulting in the OBJECT expanding, the particles do not expand. The opposite happens when the object is cooled. So when you put the lid under the hot water and heat it, it expands, making it easier to take it off.
Wiki User
∙ 15y agoThis is because the steel lid expands more quickly than the glass when it is heated and because steel lid heats up more quickly than the glass. As the steel expands when it is heated and glass expands far less it comes away from the glass and makes opening the jar easier.
Wiki User
∙ 14y agoyes as a matter infact it would because heat makes things expand so there for when you put a jar under warm water the lid will expand just enough for you to be able to open it eaiser it may take a coulple tries but after five attempts or so it probably wont work. it will take about 30-45 seconds under the hat water though at a time
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How does placing the lid of a jar under hot water help loosen it?
im guessing it makes the metal lid expand and loosen
Why does placing a jar under warm running water help loosen the lid?
There are two ways that putting a jar under warm water helps loosen the lid. When heated, materials expand. So the air in the jar could expand, reducing any internal suction. Secondly, the metal cap could expand so as to not have as much friction with the rest of the jar.
Which metal is kept under water?
I dont think there is a metal stored under water because they react with water and instead are stored in kerosene or oil. Water often corrodes the metal producing rust so i cant think of any metal that would be stored under water.
Why is it possible to loosen screw top bottles by dipping the cap briefly in hot water?
The hot water will cause the metal screw cap to expand and loosen its grip. If the bottle is straight from the fridge and is very cold, don't dip more than the metal cap briefly into the hot water. Very cold glass can shatter if in sudden contact with hot water.
Do aligators have gills?
No, when alligators go under water, they are holding their breath.
How do you make diamond earrings shine?
Your earrings may need cleaning. You can clean diamonds by soaking them in warm, soapy water to loosen the dirt, then you may brush them carefully to remove the dirt, taking care not to loosen the diamond in the setting, and rinsing them under running water. Alternatively, you can blast the jewelery with forceful steam to clean them. NB: Harsh chemicals may affect the metal in the setting.
Holding your breath under water?
Holding your breath underwater is when your head/face is underwater and you do not breath.
How long can an dolphin stay under water with holding its breath?
30 minutes.
How come hot water makes opening a jar easier?
It can change the size of a metal cap ___ & ___ it can loosen any sticky stuff on the threads.
Is potassium metal preserved under water?
No. Potassium will react violently on contact with water. Potassium is stored under oil to protect it from air and water.
Can toddlers swim?
No, however young babies are capable of holding their breath under water.
What is an easy way to open a jar when its stuck?
Run it under really hot water and it should loosen the tightness:)-Mountainmangeetar
