Group 6 The mighty Atom

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Chapter 9: The Mighty Atom : 

Chapter 9: The Mighty Atom Hoda El Askalany Dalia Ibrahim Mosheera El Zawahry Rym Khalil Supervised by Dr. Hoda Mostafa

Slide 3: 

“All things are made of atoms” -Richard Feynman

Slide 8: 

How is it that atom could create live, breathing, reproducing organisms? ..And how did this significant theory come to existence?

Timeline : 

Timeline

Slide 10: 

Scientific Method and Checklist: 1. Empirical 2. Testable 3. Repeatable 4. Falsifiable 5. Unbiased

Recipe for a Theory : 

Recipe for a Theory Characteristic of a scientist: 1. Tenacious 2. Undogmatic 3. Unbiased 4. Open minded 5. Looks at situations from many angles. 6. Honest in the collection, analysis and demonstration of data.

Slide 12: 

Propagation of ideas

Slide 13: 

For example: One scientist comes up with an under developed hypothesis (Idea on an atom) Another scientist develops it more and/or falsifies the hypothesis in order to come up with a modified theory

Slide 14: 

Albert Einstein Regarding the atomic theory, Einstein was the ‘pebble’ in the propagation of ideas. He was the first to implement the existence of the ‘atom’ but never cared to develop it. He was too busy with developing ‘the theory of relativity’.

“ The root of all matter are exceedingly tiny, irreducible particles” : 

“ The root of all matter are exceedingly tiny, irreducible particles” A lightly educated- English quacker. Born in 1766. He developed the atomic theory. Attempted a formation of a periodic table but some hypothesis were falsified.

Slide 16: 

John Dalton first stated that hydrogen’s mass is 1 while oxygen’s mass is 7. This statement was falsified as oxygen was proved to have a mass of 16 instead of 7. 16g 7 g

Empirical Evidence : 

Empirical Evidence Touch See Smell Taste Hear

Slide 18: 

“Atoms cannot be perceived by senses, they are things of thought.” Ernst Mach

Ernest Rutherford : 

Ernest Rutherford First real hero of the atomic age.

Slide 20: 

What aided the development of Rutherford’s theory, J.J Thompson discovered the electron and Nagoaka the Japanese physicist illustrated a sample image of what was perceived.

Two problems appeared: : 

Two problems appeared: 1st Problem :- No electron should be able to orbit the nucleus without crashing 2nd Problem:- How proton with their positive charges could bundle together inside the nucleus without blowing themselves and the atom apart.

Slide 23: 

Neils Bohr He explained how electrons could keep from falling into the nucleus by occupying only well-defined orbits : introducing the idea of “Quantum leap”.

Slide 24: 

In conclusion

Slide 26: 

Thank You 