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The classical elements typically refer to earth, water, fire, air, and (later) aether which were proposed to explain the nature and complexity of all matter in terms of simpler substances. Ancient cultures in Greece, Angola, Tibet, India, and Mali had similar lists which sometimes referred, in local languages, to "air" as "wind", and to "aether" as "space".
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elements fire water earth air four classical five element aether represents aristotle wind modern also matter ancient void bc symbol
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| oxygen | instance of | Atomic theory classifies atoms into more than a hundred chemical elements | 0.80 | text |
| iron | instance of | Atomic theory classifies atoms into more than a hundred chemical elements | 0.80 | text |
| and mercury | instance of | Atomic theory classifies atoms into more than a hundred chemical elements | 0.80 | text |
| which may form chemical compounds | instance of | Atomic theory classifies atoms into more than a hundred chemical elements | 0.80 | text |
| mixtures | instance of | Atomic theory classifies atoms into more than a hundred chemical elements | 0.80 | text |
| Empedocles | instance of | It had previously been believed by pre-Socratics | 0.80 | text |
| Anaxagoras that aether | instance of | It had previously been believed by pre-Socratics | 0.80 | text |
| the name applied to the material of heavenly bodies | instance of | It had previously been believed by pre-Socratics | 0.80 | text |
| was a form of fire | instance of | It had previously been believed by pre-Socratics | 0.80 | text |
| Classical element | related to Alchemy | The | 0.60 | section |
| Classical element | related to Alchemy | Arabic | 0.60 | section |
| Classical element | related to Alchemy | Pseudo Apollonius | 0.60 | section |
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