Transcription of G. C. E. (Advanced Level) CHEMISTRY
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I G. C. E. (Advanced Level) CHEMISTRY Grade 12 Resource Book Unit 4: Gaseous State of Matter Unit 5: Energetics Department of Science Faculty of Science and Technology National Institute of Education ii CHEMISTRY Resource Book Grade 12 National Institute of Education First Print 2018 Department of Science Faculty of Science and Technology National Institute of Education Sri Lanka Published by: Press National Institute of Education Maharagama Sri Lanka iii Message from the Director General The National Institute of Education takes opportune steps from time to time for the development of quality in education. Preparation of supplementary resource books for respective subjects is one such initiative. Supplementary resource books have been composed by a team of curriculum developers of the National Institute of Education, subject experts from the national universities and experienced teachers from the school system.
G.C.E. (A/L) CHEMIST RY : UNIT 4 Gaseous state of matter 3 Three states of matter differ based on arrangement and move ment of particles . The inter - particle distance is highest in gaseous state and low est in solids. In liquid state, particles are relatively closer compared to gaseous state, yet not too close compared to the solid state.
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