The Liquid State: Vapour Pressure, Surface Tension and Viscosity

Name: The Liquid State: Vapour Pressure, Surface Tension and Viscosity
Author: StemPy Lab

Why a puddle dries, why mountain water boils at a lower temperature and why honey pours slowly.

Vapour pressure and boiling with the Clausius-Clapeyron equation, surface tension and capillary rise, and viscosity with Stokes' law, each with its standard calculations.

3 lessons, about 1 h 45 min3 simulations10 problems9 practice questionsPython in every lesson

Course outline (3 lessons)

Lesson 1about 35 min
Vapour pressure and boiling
A puddle dries in the sun and a closed bottle of water does not lose a drop. Some molecules always escape from a liquid, and some always come back. The pressure of the escaped molecules in a closed space is the vapour pressure. A liquid boils when its vapour pressure equals the pressure above it.
1 simulation3 practice questions1 Python program3 problems1 Python lab
Read the lesson
Lesson 2about 35 min
Surface tension and capillary rise
A drop of water on a leaf keeps its round shape, and a needle can float on water. The surface of a liquid acts like a stretched skin. This pull is the surface tension. It makes drops round and pulls liquid up a thin tube, and the rise in the tube gives a way to measure it.
1 simulation3 practice questions1 Python program3 problems
Read the lesson
Lesson 3about 35 min
Viscosity and the flow of liquids
Honey pours slowly and water pours fast. The layers of a liquid rub against each other as it flows, and a thick liquid rubs more. This internal friction is the viscosity. We meet its unit, its link to the forces between molecules, and the three standard laws of flow in a tube and for a falling ball.
1 simulation3 practice questions1 Python program4 problems1 Python lab1 question set1 note
Read the lesson

JEE Advanced format15 questions · 55 min

Not started

Loading…