jan 1, 1805 - Dalton's Discovery 1805 Dalton explored the foundation of the atomic theory, this discovery is beginning of our use today. He provided the theory of the following: 1) Elements are made of small particles called atoms 2)Atoms of the same elements are the same; atoms of different elements are different 3) Atoms can't be created or destroyed 4) Atoms of different elements combine in simple whole ratios to form compounds 5) In chemical reactions, atoms are combined, separated, or changed.

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Dalton explored the foundation of the atomic theory around 1805, this discovery is the structure of what we use today.

He provided the theory of the following:

1) Elements are made of small particles called atoms

2) Atoms of the same elements are the same; atoms of different elements are different

3) Atoms can't be created or destroyed

4) Atoms of different elements combine in simple whole ratios to form compounds

5) In chemical reactions, atoms are combined, separated, or changed.

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