A. Short Essay (maximum of 3 sentences) 1. Dmitri Mendeleev is often regarded as the Father of the Periodic Table. Would you say that Henry Moseley deserves the recognition more than him? If yes/no, Why? Explain your answer. (Answer this question with your own perspective) 2. Explain why the atomic number is called the "fingerprint" of elements. 3. How would you relate alchemy to synthesis of new elements?

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Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.