Identify the true statements about surface tension.
Homework Answers
The property of liquid that is caused due to the attraction of particle which makes the liquid surface like thin film is represented as surface tension.
Surface tension is caused due to some intermolecular force like van der Waals force which makes the liquid particle to join together on the surface.
Surface tension – The bulk physical property of the liquid. The intermolecular forces exert on the surface of molecules.
Surface tension of a liquid is directly proportional to the intermolecular forces.
Examples for surface tension:
Shape of drops while using dropper
Walking of insects on the surface of water
Paper clip or needle floating on surface of water
The incorrect statements are as follows:
oMercury has a lower surface tension than water.
oSurface tension increases as the temperature of the liquid rises.
The true statements are as follows:
• Molecules along the surface of a liquid behave differently than those in the bulk liquid.
• Cohesive forces attract the molecules of the liquid to one another.
• Water forming a droplet as it falls from a faucet is a primary example of surface tension.
Ans:The true statements about surface tension is marked with a tick mark as follows:
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Identify whether the given statements about climate change and economic growth are true or false by dragging and dropping the relevant word into the bins provided. Poorer countries have historically been responsible for the bulk of world carbon Trhe emissions because of poor technology and environmental regulations. Air and water quality in developed countries is generally much better todayTrue than it was several decades ago. Tackling climate change issues is likely to only modestly dent long-term economic growth. Carbon emissions...
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