Question: What does the term \'surface tension\' refer to?
Options:
Force per unit area
Energy required to increase surface area
Weight of a fluid
Density of a liquid
Correct Answer: Energy required to increase surface area
Solution:
Surface tension is the energy required to increase the surface area of a liquid due to intermolecular forces.
What does the term 'surface tension' refer to?
Practice Questions
Q1
What does the term 'surface tension' refer to?
Force per unit area
Energy required to increase surface area
Weight of a fluid
Density of a liquid
Questions & Step-by-Step Solutions
What does the term 'surface tension' refer to?
Step 1: Understand that liquids are made up of tiny particles called molecules.
Step 2: Know that these molecules are attracted to each other due to forces called intermolecular forces.
Step 3: Realize that at the surface of a liquid, molecules are pulled inward by other molecules, creating a 'skin' on the surface.
Step 4: Recognize that surface tension is the energy needed to stretch or increase the surface area of this liquid.
Step 5: Conclude that surface tension helps explain why some objects can float on water and why water forms droplets.
Surface Tension – Surface tension refers to the cohesive forces between liquid molecules at the surface, which creates a 'film' that resists external force.
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