COHESIVE CHEMISTRY
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Understanding the rules

24/2/2023

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5 min read - Nature of Science
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Understanding the nature of rules in chemistry is important for IB students. I think the following ideas are important in ensuring a teacher or student is able to frame the role of a rule or principle in chemistry.
  • They are founded in the identification of patterns in empirical evidence.
  • They are likely to have exceptions.
  • They describe what but do not explain why.
These points are highlighted in two specific examples below:
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Some of the rules and principles we come across in the IB course:
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  • Home
    • How to use these resources
    • List of resources
    • Helpful external resources
  • Topics
    • Course structure
    • Measurement in chemistry
    • Structure 1 - Models of the particulate nature of matter
    • Structure 2 - Models of bonding and structure
    • Structure 3 - Classification of matter
    • Reactivity 1 - What drives chemical reactions?
    • Reactivity 2 - How much, how far, how fast?
    • Reactivity 3 - What are the mechanism of chemical change?
    • Internal assessment >
      • Official IA resources
      • IA practice A: The density of water
      • IA practice B: Empirical formula of hydrated copper(II) sulfate
      • IA practice C: Standard solutions and titrations
      • IA practice D: Enthalpy change of combustion
      • IA practice E: Full IA
    • Core concepts
    • Revision
  • NOS and TOK
  • Newsletter
  • Podcast