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1 gen 1808 anni - John Dalton 1. Atoms are tiny, invisible particles. 2. Atoms of one element are all the same. 3. Atoms of different elements are different. 4. Compounds form by combining atoms.
Aggiunto al nastro di tempo:
12 gen 2018
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Data:
1 gen 1808 anni
Adesso
~ 216 years ago
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