MadSci Network: Physics

Re: why can water not be compressed?

Date: Mon Mar 12 14:17:35 2001
Posted By: Tony Gaglierd, Faculty, Natural Science and Engineering Technology, Point Park College
Area of science: Physics
ID: 983361035.Ph

Bill you asked "why can water not be compressed"?

Matter in all forms is composed of extremely small particles called 
molecules. In the gas state the space that the molecules of a gas occupy 
is less than 1% of the space the gas occupies.

In a liquid the molecules occupy about 70% of the space occupied by the 

Particles of matter are in constant motion. In a solid,this motion is 
restricted to a very small space. In liquids the particles have a more 
random motion but are restricted to a kind of rolling over each other.

In a gas,the particles are in contentious random straight line motion.

The decreased volume and increased intermolecular interaction in liquids 
is the reason a liquid expands and contracts only very slightly.

When pressure is applied to a confined liquid there is little space for 
the molecules to move, since the molecules are so close together to start 
with the force is transmitted through the liquid with minimal compaction 
or compression of the fluid.

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