Democritus & Aristotle Atomic Theory By: MaryKate McInerney

&Grace Schwabenland

Democritus460- 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.

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Void HypothesisIt 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

airEven when there is not matter, there is still something.

Example- Light wavesWith 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 motionSizes Shapes

Theory of Matter-A substance undergoes a change- the same

substance remains throughout. The product is different from the substance that went in.

EarthElements:

Air EarthWater Fire

• Qualities:

DryHotColdMoist

Recourses Aristotlehttp://the-history-of-the-atom.wikispaces.com/Aristotlehttp://

www.britannica.com/EBchecked/topic/34560/Aristotle/33177/Matter

Democritus http://profmokeur.ca/chemistry/history_of_the_atom.ht

m

http://www.universetoday.com/60058/democritus-atom/ http://www.informationphilosopher.com/solutions/

philosophers/democritus/