ause the boigraphical heat which is being given off which can not escape from the jar because they are designed to be sealed as tight as the owner wants them to be!
no it forms on the inside
put the liquid in a cup(jar, glass, etc.) on a balance then take the liquid out and measure the cupthen subtract the mass of the cup from the cup + liquid
It has nowhere to evaporate to. Evaporation is dispersion of molecules.
Potassium metal at room temperature is a soft silvery colour, and oxidizes rapidly in contact with the air. It is usually kept in a glass jar, under a hydrocarbon liquid such as kerosene. It is about the texture of stiff modelling clay. When in contact with water it reacts with vigour, and will ignite the hydrogen released in the reaction with water.
its based on what kind of jar it is in and and if u put the same amount of hot or cold water in it
The heat causes the metal lid to expand, making it slightly bigger.
im guessing it makes the metal lid expand and loosen
It can change the size of a metal cap ___ & ___ it can loosen any sticky stuff on the threads.
The main difference between a mason jar and a kilner jar is the top. A kilner jar has a rubber-sealed screw top, while a mason jar has a disc-shaped metal lid and an outer metal part that screws around it.
There are several purposes of the lid and rim on home canning jars. The 2-piece closure allows air to escape from the jar during processing. The air is pushed out of the jar by steam building up in the jar during the hot water bath method and from pressure in a pressure canner. During the canning process the air escapes under the lid. This is supposed to happen. If improper headspace is left in the jar it can cause liquid to escape from the jar when the air is vented. Check your recipes closely for headspace and measure each jar when filling.
Often, lids are made of metals which are great conductors of electromagnetic waves (including heat). When warm water is applied to a "difficult" lid, excitement of the atoms in the metal occurs (very slight) which causes a slight expansion. This expansion helps the lid to be moved from it's grip on the jar or bottle. This is also found in plastics. Although not through expansions. The heat from the warm water literally softens the plastic.
You can try heating the metal lid to expand it and make it easier to open the jar. Alternatively, you can cool the metal lid to contract it, which may also help loosen its grip on the jar.
condensation
Metal Hurlant Chronicles - 2012 Whisky in the Jar was released on: USA: May 2014
Short answer: This is normally done when a lid is too tight to unscrew. Placing the lid in warm or hot water loosens the lid a little so someone can get to the contents of the jar easier. Long answer: Metal reacts to heat at a lower temperature than glass does. When a metal lid is placed in warm or hot water, the lid expands outwardly from its center. This will cause the lid to loosen its grip on the jar making it easier for a user to unscrew the lid. It's simple science and a neat trick.
The lid will expand and loosen the grip on the jar.
senior chemistry textbook? im on that question!