Chemistry Fundamentals 0.0 / 5 ? ChemistryFundamental ChemistryUniversityAll boards Created by: SummayaMCreated on: 07-08-17 07:48 974103186 Across 1. Which element is Magnesium twice as heavy as? (6) 3. Who first discovered the phenomenon of istopy? (5) 6. Which unit is used to express relative atomic mass? (3) 7. Who used the word atomos to describe the basic,indivisble unit of matter? (10) Down 1. Which molecular ions are more abundant? (8) 3. The wavelength of electrons is _______ that of light (7, 4) 4. How can the relative abundance of isotopes be determined? (4, 12) 8. What is the smallest particle of a pure substance that can exist independently? (8) 9. What is the smallest part of an element that can take part in a chemical reaction? (4) 10. How was the diameter of atoms determined? (1, 4)
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