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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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Physical Properties 1 2 3 4
What Type of Mixture? Cement
What type of Mixture? Smoke Blood
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
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