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Understanding Physical Properties and Atomic Structure in Pure Substances and Mixtures

This insightful overview explores the nature of pure substances and mixtures, categorizing examples such as cement, smoke, blood, and acid rain. It delves into Dalton's Atomic Theory, explaining atoms as the smallest particles that define elements. The text elaborates on atomic models, from Thomson's Plum Pudding to Rutherford's Planetary Model and Bohr's Atomic Model, highlighting the roles of protons, neutrons, and electrons. This foundational knowledge is crucial for understanding matter’s composition and behavior in chemistry.

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Understanding Physical Properties and Atomic Structure in Pure Substances and Mixtures

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Presentation Transcript

  1. Physical Properties 1 2 3 4

  2. Pure Substanceor Mixture

  3. What Type of Mixture? Cement

  4. What Type of Mixture?

  5. What type of Mixture? Smoke Blood

  6. What Type of Mixture?

  7. Acid Rain

  8. Dalton’s Atomic Theory element is made up of ATOM… the smallest particle in matter Atomic Models Thompson’s – Plum Pudding atoms contain negatively charged ELECTRONS Rutherfored’s – Planetary Model atom is like solar system with NUCLEUS in centre Bohr’s – Atomic Model atom is like solar system … electrons move in a fixed orbit Electron Cloud electrons form a cloud around the nucleus

  9. The Atom • ATOM – smallest particles of an element that have the properties of the element • NUCLEUS – dense region at centre of atom and contains → PROTONS– positively charged → NEUTRONS– neutrally charged • ELECTRONS – negatively charged particles located around the nucleus

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