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The air inside the tin will expand when heated causing great pressure on the inside of the can. If the pressure inside the can is greater that the force holding the lid on, then the pressure will force the lid to pop off off the can. have to heat it then and go crazy
Wiki User
∙ 13y ago
Wiki User
∙ 10y agoMost nornal everyday materials expand when they get hotter. So when the
temperature of a jar lid increases, it expands slightly.
So far, that's no big deal. BUT ... glass expands less than metal does when
both of their temperatures increase. So when you run hot water on both the
lid and the top of the jar, the lid expands more than the top of the glass jar
does, and it becomes easier to get the lid off.
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Why do tin cans get crushed if cooled after heated and closing is mouth?
Assuming the can can be sealed. When the can is heated the air inside it expands. If the can is then sealed and allowed to cool the air inside contracts which causes the pressure inside to drop. Because the outside air pressure is now greater it crushes the can.
If a tin is filled with hot water and sealed then covered with cold water What causes the tin to become dented?
The outside air pressure dents the tin. The water or air inside a sealed metal container will contract when cooled from the outside (by conduction through the can). When it was sealed, the pressure on the inside was the same as on the outside. But the contraction reduces the pressure on the inside, causing the external air pressure to squeeze the can, and possibly cave it in. This is widely demonstrated in another experiment using dry ice. A sealed gasoline can of about a gallon (4 liters) is placed on a dry-ice bed and cooled until the outside air pressure crushes the can.
Where is the fulcrum on a diagram of a screwdiver opening a paint can?
Very close to the tip of the screwdriver. The lip of the tin that the screwdriver presses down against is the fulcrum. The load is the tin lid, under the lip of which the tip of the screwdriver sits.
How did tin get its name?
From the Anglo-Saxon word tin. Tin's atomic symbol comes from the Latin word for tin, stannum
Are tin whistles made with tin?
Well tin whistle today are now made with nickel,brass,silver,or wood. It's not made with tin. The tin whistle is named so because before it was made with tin-plated steel.
Who is called tin lid in your family?
The tin lid in your family is your kid :)
Why do tin cans get crushed if cooled after heated and closing is mouth?
Assuming the can can be sealed. When the can is heated the air inside it expands. If the can is then sealed and allowed to cool the air inside contracts which causes the pressure inside to drop. Because the outside air pressure is now greater it crushes the can.
What happens if coke tin is filled with water and heated on hot plate then placed in cold water?
it'll get crushed due to air pressure
Why did the fish tin lid?
Because the Ice-Cream had no bones. HaHaHaHa...
Why does canned food does not decay unless the tin is damaged or opened?
Simply because the can is heated while it's being sealed. This removes all the remaining air inside - keeping the produce fresh for long periods of time.
What is coffee-can lid?
A coffee can lid is just that, a lid that cap a tin of coffee grounds or beans. In older cans and more high quality grades of coffee, the can and lid are made entirely of metal. Modern convenience and mass production usually sees coffee can lids now made of plastic, much like a peanut tin lid, complete with a peel-back metal seal.
When was coffee first sold in sealed tin cans in US?
1879
Do anchovies in a unopened tin spoil?
No it won't because it is vacuum sealed
Why can you loosen a metal lid by holding it under hot water?
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.
Why is it important to store firework in a closed tin box?
because da lid is on der!
How many moles of tin metal will be produced when 0.74 moles of tin IV oxide is heated?
The formula for tin (IV) oxide is SnO2. This formula shows that each formula unit contains exactly one tin atom. Therefore, if 0.74 mole of tin (IV) oxide is heated sufficiently to cause complete disproportionation of the compound to its constituent elements, 0.74 moles of tin metal will be produced.
What happens when tin combines with steel?
You get Tin Steel Mix
