chapter2q - 1. Chapter 2 The Components of Matter Created:...

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Chapter 2 The Components of Matter Created: 3:05:30 PM MST 1. Kaolinite, a clay mineral with the formula Al 4 Si 4 O 10 (OH) 8 , is used as a filler in slick-paper for magazines and as a raw material for ceramics. Analysis shows that 14.35 g of kaolinite contains 8.009 g of oxygen. Calculate the mass percent of oxygen in kaolinite. A. 1.792 mass % B. 24.80 mass % C. 30.81 mass % D. 34.12 mass % E. 55.81 mass % 3. J. J. Thomson studied cathode ray particles (electrons) and was able to measure the mass/charge ratio. His results showed that A. the mass/charge ratio varied as the cathode material was changed. B. the charge was always a whole-number multiple of some minimum charge. C. matter included particles much smaller than the atom. D. atoms contained dense areas of positive charge. E. atoms are largely empty space. 9. Rutherford bombarded gold foil with alpha ( α ) particles and found that a small percentage of the particles were deflected. Which of the following was not accounted for by the model he proposed for the structure of atoms? A. the small size of the nucleus B. the charge on the nucleus C. the total mass of the atom D. the existence of protons E. the presence of electrons outside the nucleus 11. Bromine is the only nonmetal that is a liquid at room temperature. Consider the isotope bromine-81,
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chapter2q - 1. Chapter 2 The Components of Matter Created:...

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