Question

cohesion, adhesion and surface tension quick check

Answer 1

Sure! Here’s a quick overview of cohesion, adhesion, and surface tension:

### Cohesion
- **Definition**: Cohesion refers to the attraction between molecules of the same substance.
- **Example**: Water molecules are attracted to one another due to hydrogen bonding, which allows for phenomena like water droplets forming.

### Adhesion
- **Definition**: Adhesion is the attraction between molecules of different substances.
- **Example**: Water molecules adhere to glass, which is why water spreads out in a thin layer on the surface of glass or can climb up a narrow tube (capillary action).

### Surface Tension
- **Definition**: Surface tension is a property of liquids that describes how the surface of a liquid behaves like a stretched elastic membrane due to the cohesive forces between liquid molecules.
- **Example**: Insects, like water striders, can walk on water because of the high surface tension created by the cohesive forces among water molecules.

### Summary
- **Cohesion** = like molecules attracting to each other.
- **Adhesion** = different molecules attracting to each other.
- **Surface Tension** = a result of cohesion at the surface of a liquid.

Let me know if you need more detailed explanations or examples!