State variables and SI units
State variables and SI units
A gas is described by pressure ppp, volume VVV, temperature TTT, and amount of substance nnn. Pressure comes from molecules colliding with the container walls.
Step-by-step lessons on Edexcel A Level Physics Ideal gases. Each one builds up to exam-style questions. Physics is one of the most mathematically demanding A Levels -- at least 40% of the marks across the three papers require maths skills at Level 2 (GCSE) standard or above, so build calculation and graph-handling fluency alongside the conceptual content from the start.