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  1. Chemistry | Definition, Topics, Types, History, & Facts

  2. Chemistry library | Science | Khan Academy

  3. Chemistry - Wikipedia

  4. High school chemistry | Science | Khan Academy

  5. Concept and branches of chemistry | Britannica

  6. 1.1: What is Chemistry? - Chemistry LibreTexts

  7. Atoms, compounds, and ions | Chemistry library - Khan Academy

  8. What is chemistry? | New Scientist

  9. 1: What Is Chemistry? - Chemistry LibreTexts

  10. Chemistry - Latest research and news | Nature