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Quiz 2-solutions - Version 219/ADBCD Quiz 2 Lyon(52635 This...

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Version 219/ADBCD – Quiz 2 – Lyon – (52635) 1 This print-out should have 6 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 1 2 3 4 5 6 7 AA AB AC AD BA BB BC 8 9 10 BACK NEXT BD CA CB CC CD Retries for answers to questions are allowed on this quiz. No re-grade of hard copies will be considered. The quiz scores will be available at 10AM today on Quest. 001 10.0 points Consider the following properties: I) Objects made of silver become tar- nished. II) The boiling point of ethanol is 78 C. III) The red color of rubies is due to the presence of chromium ions. Which is/are physical? 1. III only 2. II and III only correct 3. I and III only 4. None of these 5. I and II only 6. I only 7. II only 8. I, II and III Explanation: Change of state is a physical change and color is a physical property. Tarnishing is a chemical change. 002 10.0 points A solid homogeneous mixture is compose of three substances, A, B, and C. Substance A is
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