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Questions from Previous Chemistry 115 Exams

Questions from Previous Chemistry 115 Exams - Questions...

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Questions from Previous Chemistry 115 Exams Atoms, Molecules & Ions 1. Which of the following is the correct group number for the alkaline earth elements? a. 1A b. 2A c. 3A d. 6A e. 7A 2. Which of the following statements is not a part of Dalton’s atomic theory? 3. Whose experiments led to the modern view of atomic structure, i.e. atoms contain a small, positively charged nucleus which is surrounded by electrons that fill most of the empty space around the nucleus? 4. How many neutrons does an atom of carbon-14 have?
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5. Which is the most stable ion of Be? a. Be -2 b. Be -1 c. Be d. Be +1 e. Be +2 6. Which is the correct name for FeO? 7. Which of the following is named incorrectly? 8. Each of the following compounds are both molecular and empirical formulas except: 9. What is the charge of the stable sulfur anion? a. +1 b. +2 c. -1 d. -2 e. +6
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10. What is the correct formula for iron(III) sulfate? 11. A substance 12. The group 2A elements are the 13. Which of the following is not a ray produced by radioactivity? a. alpha rays b. beta rays c. gamma rays d. cathode rays 14. Cathode rays are 15. Isotopes are atoms of the same element that differ in
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