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Unformatted text preview: CHEM 1360 QUESTION BANK 1-01. 5 micrograms equal (A) 0.005 gram. (B) 5 x 10 ! 6 gram. (C) 500 grams. (D) 0.05 gram. (E) 5 x 10 ! 3 gram. 1-02. A substance which has definite size but in definite shape is a (A) solid. (B) liquid. (C) gas. (D) salt. (E) acid. 1-03. Absolute zero ( ! 273C) is the temperature where (A) all molecular motion stops. (B) electrons fall into the atoms. (C) litmus turns blue. (D) water freezes. (E) oxygen freezes. 1-04. Convert 454 milligrams to grams. (A) 0.454. (B) 4.54x10 ! 3 . (C) 454,000. (D) 227. (E) 0.000454. 1-05. How many centimeters are in one meter? (A) 0.001. (B) 0.100. (C) 10. (D) 100. (E) 1000. 1-06. How many liters are in 2000 milliliters? (A) 1. (B) 2. (C) 2x10 ! 3 . (D) 20. (E) 200. 1-07. How many meters are in 10 km? (A) 10. (B) 1000. (C) 10,000. (D) 10 ! 3 . (E) 10 ! 4 . 1-08. Room temperature is about (A) 0C. (B) ! 100C. (C) +100C. (D) +25C. (E) +400C. 1-09. The leading chemical product in the United States is (A) sodium hydroxide. (B) sulfuric acid. (C) ascorbic acid. (D) hydrochloric acid. (E) lime. 1-10. Which is a compound? (A) O 2 . (B) HF. (C) helium. (D) calcium. (E) molybdenum. 1-11. Which is a mixture? (A) oxygen. (B) carbon dioxide. (C) air. (D) iron. (E) sodium chloride. 1-12. Which is a physical change? (A) Wool is spun into yarn. (B) Milk sits on the counter overnight and turns sour. (C) Silkworms eat mulberry leaves and produce silk. (D) Wood burns. (E) Nails rust. 1-13. Which of the following is not a physical process: (A) battery producing electricity. (B) melting of ice. (C) pulverizing an aspirin. (D) bending a nail. (E) dissolving sugar in water. 1-14. Carbon dioxide is a (A) compound. (B) element. (C) mixture. (D) inert gas. (E) salt. 1-15. What is the chemical symbol for chlorine? (A) C. (B) Cr. (C) Cl. (D) Cn. (E) Ce. 1-16. When a liquid evaporates, such as freon or sweat, the process is: (A) exothermic. (B) endothermic. (C) a chemical change. 1-17. When wood burns, the process is: (A) exothermic. (B) endothermic. 1-18. Aristotle believed one of the elements was (A) wine. (B) iron. (C) water. (D) heat. (E) sulfur. 1-19. Energy is absorbed by H 2 O when (A) ice melts. (B) water freezes. (C) water pours. (D) ice cracks. (E) dew "falls" (water vapor condenses). 1-20. Which of the following was not known to the ancients? (A) sulfur. (B) lead. (C) mercury. (D) phosphorus. (E) copper. 1-21. Which of the following was not known to the ancients? (A) chlorine. (B) copper. (C) iron. (D) silver. (E) gold. 1-22. Which of the following was not known to the ancients? (A) carbon. (B) mercury. (C) iron. (D) silver. (E) oxygen. 1-23. How many atoms of hydrogen are there in a molecule of ethyl alcohol, CH 3 CH 2 OH? (A) 2....
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- Spring '08