Room Temperature Water Particle Diagram

So just to understand what s going on here is that on this axis i have pressure.

Room temperature water particle diagram.

Which particle diagram represents molecules of only one compound in the gaseous phase. On the x axis i have temperature and at any given point this diagram will tell you whether you re dealing with a solid so solid will be here a liquid will be here or a gas. The temperature of a system depends on the average kinetic energy of its particles. This depends on the strength of forces between particles and the ambient air pressure.

This is the phase diagram for a typical pure substance. This higher the pressure the higher the boiling point as the pressure forces the particles to stay together for longer. Water for example evaporates from an open container at room temperature 20 o c even though the boiling point of water is 100 o c. The temperature at which something boils is known as boiling point.

We can explain this with the diagram in the figure below. As the liquid boils the temperature of the liquid remains at 100 c. This graph is part of a heating curve for water. This is the phase diagram for water.

The temperature probe is connected to a vernier computer interface and a graph of temperature versus time is displayed on a computer monitor or pc. In the cases we ll be looking at on this page the phases will simply be the solid liquid or vapour gas states of a pure substance. A phase diagram lets you work out exactly what phases are present at any given temperature and pressure.