Question
Sometimes the metal lid on a glass jar has been screwed on so tightly that it is very difficult to open. Explain why holding the lid under hot running water often loosens it enough for easy opening.
Step 1
The lid is so tight that it is difficult to open. Show more…
Show all steps
Your feedback will help us improve your experience
Vysakh M and 67 other educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
A common trick for opening a stubborn lid on a jar is to run very hot water over the lid for a short time. Explain how this helps to loosen the lid.
Does it really help to run hot water over a tight metal lid on a glass jar before trying to open it? Explain your answer.
A common way of opening a tight lid on a glass jar is to place it under warm water. The thermal expansion of the metal lid is greater than that of the glass jar; thus, the space between the two expands and it is easier to open the jar. Will this work for a metal lid on a container of the same kind of metal?
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD