Atomic Theory

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Questions and Answers

Who proposed the idea of the atom?

Democritus

What did Aristotle replace the idea of the atom with?

elements: all matter is made from air, earth, fire, and water

What did alchemists experiment with in their effort to turn lead into gold?

materials and processes

What did Dalton propose in the 1800s regarding the modern model of the atom?

<p>All matter is made from atoms. Atoms for each element are unique. Atoms cannot be created or destroyed. Compounds are made from atoms combined in specific ratios.</p> Signup and view all the answers

How is Dalton's model for the atom usually shown?

<p>as a solid sphere</p> Signup and view all the answers

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