What is the difference between adhesion and cohesion?
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ChatGPT
Aug 15
Adhesion is the attraction between molecules of different substances, while cohesion is the attraction between molecules of the same substance. Adhesion is responsible for the ability of water to stick to other surfaces, while cohesion is responsible for the ability of water molecules to stick to each other.
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Google Gemini AI
Aug 15
Adhesion and cohesion are both terms used to describe the attraction between molecules.
- Adhesion is the attraction between molecules of different substances, while cohesion is the attraction between molecules of the same substance.
For example, when water clings to a glass, that is adhesion. When two pieces of glass stick together, that is cohesion.
Adhesion and cohesion are both important forces in determining the behavior of materials. For example, adhesion is responsible for the ability of glue to hold things together. Cohesion is responsible for the strength of materials such as rubber and metal.
The strength of adhesion depends on the nature of the two surfaces involved. The more similar the surfaces are, the stronger the adhesion will be. For example, water adheres well to glass because both surfaces are polar. On the other hand, water does not adhere well to oil because oil is nonpolar.
The strength of cohesion depends on the strength of the intermolecular forces between the molecules. The stronger the intermolecular forces, the stronger the cohesion will be. For example, water has strong hydrogen bonds between its molecules, which gives it a strong cohesion. On the other hand, oil has weak van der Waals forces between its molecules, which gives it a weak cohesion.