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Environmental
Day 4: Behaviour of gases - The Ideal Gas Law

1. The amount of pressure exerted by gases is determined by:
a. temperature of the gas.
b. the density of the gas.
2. The relationship between the pressure applied by the gas, its temperature and density is called the ideal gas law.

pressure = temperature x density x gas constant

3. Temperature and density are called the variables because they vary (change).

Summary

The pressure applied by any gas depends on its temperature and density. An increase in pressure can result from an increase temperature and density.

Whizzkid Section

The Ideal Gas Law can be written as:

p = ρRT

where p = pressure,
ρ = density,
R = gas constant,
T = temperature