Why does hand sanitizer feel cold? #shorts #science
Interactive Video
•
Science, Physics, Chemistry
•
11th Grade - University
•
Hard
Wayground Content
FREE Resource
The video explains how isopropyl alcohol, found in products like hand sanitizer, causes a cooling sensation on the skin. This occurs because alcohol evaporates quickly, transferring heat from the body to the alcohol. The weak molecular interactions in alcohol allow it to evaporate with minimal energy, taking body heat with it and leaving the skin feeling cold. This process is efficient, so there's no need to wash off the alcohol.
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2 questions
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1.
OPEN ENDED QUESTION
3 mins • 1 pt
What role does body heat play in the evaporation of alcohol?
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2.
OPEN ENDED QUESTION
3 mins • 1 pt
Why is it unnecessary to wash off hand sanitizer after using it?
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