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INDEX of notes on the 'states of matter'

Physical properties of gases, liquids and solids - application of the particle model to explain properties of the three states of matter

[Author © Dr WP Brown PhD: Doc Brown's chemistry exam revision notes on states of matter - physical properties of gases, liquids and solids, suitable for students of UK GCSE level and international IGCSE/O level chemistry courses, ~US grades 9-10 chemistry notes [page updated Nov 28th 2025]

These notes to NOT cover materials like liquid crystals which are a specific physical state exhibiting the properties of a both a solid crystal and a liquid fluid.

These notes describe using kinetic particle models to describe and explain the properties of gases, liquids and solids and state changes between - comparing structure and properties of gases liquids and solids and relevant P-V-T calculations.


extra advanced notes on gas laws, ideal and non-ideal gasesDoc Brown's chemistry revision notes: basic school chemistry science GCSE chemistry, IGCSE  chemistry, O level advanced A level and  ~US grades 8, 9, 10, 11 and 12 K12 honors school or college science courses or equivalent for ~14-16 year old science students for national examinations in chemistry.


Index for 'states of matter' pages on the properties of gases. liquids & solids

Sections for GCSE level chemistry students (~US grades 9-10)

1. Introduction: Three states of matter, particle pictures of elements, compounds and mixtures

2. Three states of matter - what can we expect from particle models and are there limitations?

3. A kinetic particle model of a gas, properties, pressure and the effect of temperature change

4. What is diffusion? Particle model and examples of demonstrating diffusion in gases

5. Kinetic particle model of a liquid and properties explained, 2nd mention of Brownian motion (see 3)

6. Particle model of a liquid and diffusion experiments and associated phenomena

7. Particle model of a solid and explaining the properties of solids, links to physics density notes

8. Physical state changes - a summary diagram for gas <==> liquid <==> solid changes

9. Evaporation and boiling - explained using particle model and energy changes

10. Condensation and distillation - explained using particle model and energy changes

11. Melting and freezing state changes explained using the particle model and energy changes

12. The special case of sublimation - examples described and explained using particle model

13. Cooling and heating curves explained - state changes and relative latent heat energy changes

14. Comparison of latent heat changes in physical state changes for different types of structures

15. The particle model explaining dissolving solids and solution formation

16. The particle model and miscible liquids, immiscible liquids and using a separating funnel

17. Ideal gases, their theoretical behaviour, gas laws and the Kelvin scale of temperature

18. Particle model of a gas relate to gas pressure-volume calculations using Boyle's Law

19. Particle model of a gas relate to gas pressure-volume-temperature calculations using Charles's & Gay-Lussac Law

20. The combined gas law equation - more complicated calculations involving P-V-T

See also Reacting gas volume ratios, Avogadro's Law & Gay–Lussac's Law Calculations

and GCSE (~US grades 8-10) level multiple choice QUIZ on states of matter: gases, liquids & solids

Extra sections for advanced level chemistry students

(UK A level and US grade 11-12 K12 honors students should be completely familiar with 1-20)

21. Experiment to determine the molecular mass of a volatile liquid, PV = nRT calculations

22. Dalton's law of partial pressures and calculations

23. Graham's Law of Diffusion, demonstration experiments and relative diffusion rate calculations

24. Non–ideal real gas behaviour and Van der Waals Equation of State


Where next? and other associated pages

All my UK GCSE (~US grade 8-10) level chemistry revision notes

All my UK advanced level (~US grades 11-12) pre-university chemistry revision notes

This is a BIG website, you need to take time to explore it [SEARCH BOX]

Email doc brown - comment? query?


Some easy basic exercises from UK KS3 basic science quizzes  (~US grades 6-8)

"QUIZ on the particle model of solids, liquids and gases"

Multiple Choice Questions for KS3 Science  revision on gases, liquids and solids – particle models, properties, explaining the differences between them.

 Four handy linked online word–fill worksheets

on gases. liquids and solids wf1 wf2 * wf3 * wf4

The BIG hard crossword puzzle OR the smaller EASIER

The crossword and word–fill ANSWERS

3 linked online matching pair quizzes States of matter 1  *  States 2 mp  *  States 3 mp

extra advanced notes on gas laws, ideal and non-ideal gasesWebsite content © Dr Phil Brown 2000+. All copyrights reserved on Doc Brown's Chemistry revision notes, images, quizzes, worksheets etc. Copying of website material is NOT permitted. GCSE level and advanced pre-university level revision notes. Detailed notes on the states of matter and their properties. Based on the syllabus-specifications for students taking the IGCSE/GCSE level physics examinations summary revision notes and key points about INDEX of states of matter (g-l-s) pages, for students taking the WJEC gcse physics, CCEA gcse for students taking the WJEC gcse chemistry/physics, CCEA gcse chemistry/physics, CIE igcse chemistry/physics, AQA igcse/gcse physics, Edexcel gcse chemistry/physics, OCR 21st century chemistry/physics, OCR gateway chemistry/physics or any other GCSE or IGCSE level chemistry/physics exams e.g. US grade 9-10 physics coursesphysics, CIE igcse physics, AQA igcse/gcse physics, Edexcel gcse physics, OCR 21st century physics, OCR gateway physics or any other GCSE or IGCSE level physics exams e.g. US grade 9-10 physics courses

INDEX of all my notes on the states of matter

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