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Use Cases
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Resources
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Pricing
8000 BC
% complete
(Stone Age) Matter was made up of solid material, which could be fashioned into tools.
6000 bc - 1000 bc
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Chemists investigated properties of only those materials that were of high value to humans. (gold and copper)
4500 bc
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(Bronze Age) The effect of heat on copper, lead to the creation of a strong material (bronze) for use as tools.
1200 bc
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(Iron Age) Iron combined with carbon to make steel, for even stronger tools.
350 bc
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Everything was made out of Air - Water - Earth - Fire (atomos particles)
1500
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Theory of Matter was based more on experimentation. (History of Alchemy)
1660
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Particles can be compressed. (Boyle)
1770
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System for the naming of chemicals was developed. (Lavoisier)
1780
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Air is necessary for combustion to occur.
1808
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Observation principles during experimentation.
1897
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Raisin bun model with charged particles
1904
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Negatively charged particles orbiting around nucleus.
1922
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Electrons rotate randomly around the nucleus.