Create a mind map with pictures on the different applications of thermal expansion of solids, liquids and gases.

When matter is heated, its particles gain energy, which is exerted as kinetic energy.

In solids, the particles vibrate harder and faster, creating more space between the particles, causing them to expand. This is most visible in metals. This process is thermal expansion.

In liquids, the particles move around faster, weakening the intermolecular forces of attractions, and are thus held less closely together. The liquid expands. If you want, you can test this out yourself, by measuring and comparing the volume of the same mass of water, before and after heating. A common example is the traditional thermometer – as the bulb of the thermometer heats up, the heat is conducted to the liquid. This causes the liquid to expand, forcing it to rise up the thermometer:

the ideal gas law equation is as follows

pv = nrt

where p - pressure

v - volume

n - number of moles

r - universal gas constant

t - temperature

so if the pressure, volume and temperature are already known

we are left with n and r

since r is the universal gas constant that has a known fixed value then r too is known

so we are left with 'n'

once we know temperature volume and pressure

we can find the number of moles of gas present using the ideal gas law equation

this is not my own answer, this is an answer for the same question by the user blahblahmali. i do not claim ownership of this account.