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IB Physics HL · B.3 Gas laws

Root-mean-square molecular speed for IB Physics HL

Root-mean-square molecular speed is mapped to B.3 Gas laws in the IB Physics HL pathway. Use this public guide to see exactly where the concept fits, what to master, and which GioPhysics resource continues the study sequence.

B · The particulate nature of matterSL + HLGuide 3 of 3

Where this fits

B.3 Gas laws

Curriculum
IB Physics HL
Theme or group
The particulate nature of matter
Current framework
First assessment 2025

The ideal gas equation and kinetic theory are in Chapter 40, with root-mean-square speeds in the molecular-speeds lesson.

Mastery checklist

Know what success looks like.

  1. 01

    Define the system and distinguish temperature, internal energy, and transferred energy.

  2. 02

    Connect the macroscopic process to a particle or molecular explanation.

  3. 03

    Use an energy balance with consistent signs, units, and process assumptions.

Exam lens

Build, apply, check.

B.3 Gas laws is identified as SL + HL in this curriculum map. Build the concept first, then practise selecting a model, showing working, and checking the final result.

Teaching sequence

B.3 Gas laws

This syllabus point maps to 3 ordered concept guides.

  1. 01The mole and the ideal-gas equation
  2. 02Kinetic theory and molecular pressure
  3. 03Root-mean-square molecular speedCurrent guide

Continue on GioPhysics

Choose the right next step.

The curriculum context stays public. Lesson and presentation access follows the existing GioPhysics membership rules.

LearnOpen the mapped lessonRoot-mean-square molecular speedTeachOpen the presentationClassroom sequence for this conceptPractiseOpen problem applicationsEasy through expert problem pathwaysPlanOpen the full curriculum mapIB Diploma Programme Physics