A-Level Biology OCR A
Water Molecules Glass Explain Level Shape Adhesion Stick
| Front |
Explain why water can dome above the level of the glass container it is in? Explain the shape it makes. |
| Back |
The meniscus:- Glass is made up of polar molecules to which water molecules are attracted to (hydrophilic) - adhesion
- While the water is in the container, some molecules touch glass which is above the level of water and they stick to it - adhesion
- Other molecules stick to that molecule due to cohesion and stay like that while the original molecule is stuck to the glass, resulting in a concave meniscus shape
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A-Level Biology OCR A