Adhesion by Elise Strobel https://padlet.com/56038/7ppuvrfs1zys en-us 2017-12-21 14:35:12 UTC 2025-03-01 21:54:50 UTC hello@padlet.com Surface Tension 56038 https://padlet.com/56038/7ppuvrfs1zys/wish/217711858 Definition:the tension of the surface film of a liquid caused by the attraction of the particles in the surface layer by the bulk of the liquid, which tends to minimize surface area.

Real world application: Surface tension allows bugs to float on water.


Human and global Impact:
Without surface tension there wouldn't be cohesion between water molecules to hold them together allowing it to resist an external source. Without this, objects couldn't not float and rise above water.

Relationship to chemistry:
Surface tension is equal to the amount of force per unit needed to expand the surface of a liquid. Different chemicals like laundry detergent can make the surface tension of a liquid smaller. This would cause objects that usually float on water to sink.

Relationship to water cycle:
]]> 2017-12-21 14:37:24 UTC https://padlet.com/56038/7ppuvrfs1zys/wish/217711858 Adhesion 56038 https://padlet.com/56038/7ppuvrfs1zys/wish/217712216 Definition: The tendency of dissimilar particles or surfaces to cling to each other.


What is the human and global impact on Adhesion?
When adhesion and cohesion work together they can transport water to different plants and organisms. Without adhesion, water wouldn't stick to anything like trees and plants that need to absorb it to stay alive

Relationship to chemistry
A chemical adhesion happens when two materials form a compound at the joint. Then these molecules can bond together which causes water to stick to other surfaces.


Real world example:
When you get out of the pool the water sticks to you and than is an example of Adhesion.

Another is after it rains the water sticks to the grass and spider webs.

Relationship to the water cycle:
When rain falls from the sky it lands on plants and organisms and sticks to them. This creates things like morning dew and rain droplets that fall from the trees in the morning. This provides water for different plants and without it rain would just land on the ground to be absorbed.

]]> 2017-12-21 14:38:38 UTC https://padlet.com/56038/7ppuvrfs1zys/wish/217712216 Our Demonstrations https://padlet.com/56038/7ppuvrfs1zys/wish/217855915 In our surface tension experiment you can see that the water molecules attract to each other causing surface tension which creates an elastic like surface layer. Without this the water would fall straight through and push off the note card. In our adhesion experiment, you can see that the water molecules stick to the rope and are able to transfer down to the other cup. Without adhesion the water would just fall out of the cup and not transfer down the rope. ]]> 2017-12-22 14:06:12 UTC https://padlet.com/56038/7ppuvrfs1zys/wish/217855915 https://padlet.com/56038/7ppuvrfs1zys/wish/217861304 2017-12-22 14:47:00 UTC https://padlet.com/56038/7ppuvrfs1zys/wish/217861304