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Step 1
Learn how to understand an Atom. An Atom is the smallest particle that an element can be made up of. Dalton's theory states that all matter is made from Atoms and that atoms are indivisible and indestructible. Today we know that Atoms can be destroyed by nuclear reactions but Dalton's theory that all matter is made from atoms still stands.
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Step 2
Learn what an element is. An element is a substance that cannot be separated into simpler substances. Dalton's theory states that different elements have different types of atoms. This can be seen by the multiple amounts of elements that compose the periodic table.
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Step 3
Learn what a chemical reaction is. A chemical reaction happens when a substance is chemically converted into new substance with different properties. Dalton's theory states that chemical reactions occur when atoms are rearranged. Examples of chemical reactions are when you burn wood in a fireplace. The ash is a different substance than the wood you began with.
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Step 4
Learn what a compound is. A compound is when two or more atoms combine with ionic or covalent bonds. Dalton's theory states that compounds are formed from other elements. Examples would be water (H2O) or salt (NaCl)










