Download His question about the Atomic Theory - UDChemistry

By: MaryKate McInerney
&
Grace Schwabenland
Democritus
 460- 370 B.C.(Greece)
 Known as the father of “modern science”
 Later discovered that eventually the smallest piece will
be obtained.
 One of the first to propose the existence of a particle.
Democritus (Atomic Theory)
 His question about the Atomic Theory- “Could matter
be divided into smaller and smaller pieces forever, or was
there a limit to the number of times a piece of matter could
be divided?
 His Theory- That all atoms were small, hard particles that
were made of the same material but were different shapes
and sizes. Atoms were infinite number, were always moving
and capable of joining together.
 Joined together by either hook and eyes or balls and sockets.
 Democritus believed there was no qualitative differences
between atoms, only quantitative.
Void Hypothesis
 It was a response to the paradoxes- Parmenides and
Zeno denied it because they said nothing cannot exist.
 States that “Where there seems to be nothing there is
air
 Even when there is not matter, there is still something.
 Example- Light waves
 With that there has to be a void present.
 To Democritus thought the atoms were minuscule
quantities of matter.
 Aristotle’s description about forces and motion,
depended that all space be filled with matter.
Aristotle
 460-307 BC
 Atomic Theory
 Constant motion
 Sizes
 Shapes
 Theory of Matter A substance undergoes a change- the same substance remains
throughout.

The product is different from the substance that went in.
Earth
 Elements:
 Air
 Earth
 Water
 Fire
• Qualities:




Dry
Hot
Cold
Moist
Recourses
 Aristotle
 http://the-history-of-the-atom.wikispaces.com/Aristotle
 http://www.britannica.com/EBchecked/topic/34560/Aristo
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tle/33177/Matter
Democritus
http://profmokeur.ca/chemistry/history_of_the_atom.htm
http://www.universetoday.com/60058/democritus-atom/
http://www.informationphilosopher.com/solutions/p
hilosophers/democritus/