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in the 19th century a scientist called john dalton used symbols to represent atoms.the symbols he used for atoms of three different elements are shown below...
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Answer:
+,-
Explanation:
eletron(-),protron(+)
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Answer:
Elements are substances like (hydrogen, oxygen) that can't be split into simpler substances. A substant like water, that is made up of two or more element is called compound. A mixture is made up of two or more substances which are physically combined is called mixture.
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