Question 1 Report
Which of the following explains the concave meniscus of water in a glass tube?
The concave meniscus of water in a glass tube is caused by the difference in the attractive forces between the water molecules and the glass. The glass attracts the water molecules, which creates an adhesive force, but the water molecules also attract each other, creating a cohesive force. In the case of a concave meniscus, the adhesive force between the water and the glass is greater than the cohesive force between the water molecules. This causes the water at the edges of the meniscus to be pulled up towards the glass, creating a concave shape. Therefore, the answer is: - The adhesion between water and glass is greater than the cohesion between water molecules.