Physical Properties. 1. 2. 3. 4. Pure Substance or Mixture. What Type of Mixture?. Cement. What Type of Mixture?. What type of Mixture?. Smoke. Blood. What Type of Mixture?. Acid Rain. Dalton’s Atomic Theory element is made up of ATOM… the smallest particle in matter.
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element is made up of ATOM… the smallest particle in matterAtomic 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
electrons form a cloud around the nucleus
→ PROTONS– positively charged
→ NEUTRONS– neutrally charged