Physical properties
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Physical Properties PowerPoint PPT Presentation


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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

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Physical properties

Physical Properties

1

2

3

4


Pure substance or mixture

Pure Substanceor Mixture


What type of mixture

What Type of Mixture?

Cement


What type of mixture1

What Type of Mixture?


What type of mixture2

What type of Mixture?

Smoke

Blood


What type of mixture3

What Type of Mixture?


Acid rain

Acid Rain


Atomic models

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

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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