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Chemistry 1301 Exam 1

by: Corina Johnson

Chemistry 1301 Exam 1 10886

Marketplace > University of Houston > Chemistry > 10886 > Chemistry 1301 Exam 1
Corina Johnson

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Foundations of Chemistry
Simon Bott
Study Guide
Chemistry, Science, atomic theory
50 ?




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This 4 page Study Guide was uploaded by Corina Johnson on Sunday February 21, 2016. The Study Guide belongs to 10886 at University of Houston taught by Simon Bott in Winter 2016. Since its upload, it has received 22 views. For similar materials see Foundations of Chemistry in Chemistry at University of Houston.


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Date Created: 02/21/16
CHEM 1301 SPRING 2003 TEST 1 VERSION 1 NO CHEATING! BUBBLE IN “1” IN THE P COLUMN TO GET YOUR GRADE POSTED!!!!! [the only way you’ll find out how you did!] 1. The ancient Greeks believed that matter was made up of four elements. Only one of these elemen ts is described as a pure substance today. Which is it? (A) earth (B) air (C) gold (D) water (E) fire 2. Which of the following is correctly described as a compound? (A) oxygen (B) coffee (C) nitrogen (D) carbon dioxide (E) air 3. Carbon monoxide can be broken down into carbon and oxygen in a mass ratio of 3:4 or 0.75. Carbon dioxide can be broken down into carbon and oxygen in a mass ratio of 3:8 or 0.375. The fact that 0.75 is related to 0.375 in a nice easy ratio is an illustration of: (A) The Law of Conservation of Mass (B) The Law of Definite Proportions (C) The Law of Multiple Proportions (D) The Atomic Theory (E) None of these 4. Which of the following statements is incorrectly labeled as a Law or Theory? (A) The Law of Gravity that things fall to the ground. (B) The Theory of Evolution that man is descended from the apes. (C) Newton's Second Law that force is equal to mass of an object times its acceleration. (D) Einstein's Law of Relativity that no object with mass can travel at the speed of light. (E) Dalton's Atomic Theory that matter is made up of tiny particles called atoms. 1 5. Which part of Dalton's Atomic Theory was a direct "dig" at the alchemists? (A) All matter is made up of atoms, which are small, indivisible particles. (B) Atoms can not be created, destroyed nor transformed. (C) Atoms of a particular element are alike in all respects (D) Atoms of different elements are different from each other (E) Atoms can group together to form molecules. 6. Which of the following elements is NOT correctly matched with its symbol? (A) sodium is Na (B) phosphorus is P (C) chlorine is Cl (D) carbon is C (E) neon is N 7. Which of the following elements does NOT have a symbol taken from a LATIN name? (A) iron (B) copper (C) cobalt (D) sodium (E) potassium 8. Which of the following elements is NOT correctly matched with its group? (A) calcium is an alkaline earth metal (B) titanium is a transition metal (C) argon is a noble gas (D) selenium is a pnictogen (E) bromine is a halogen 9. Which of the following statements is FALSE? (A) bromine does not conduct electricity (B) gold is malleable (C) mercury is a metal (D) silicon is a metal (E) hydrogen is a non-metal 10. Which of the following is a lanthanide? (A) Dy (B) P (C) W (D) Rn (E) U 11. Rutherford's experiment was used to indicate the presence of: (A) electrons (B) protons (C) electron's energy levels (D) neutrons (E) a positive nucleus without electrons stuck to it 2 12. Which of the following statements is FALSE? (A) an atom consists of a positively charged, massive nucleus that occupies very little volume and electrons that go round the nucleus (B) the number of electrons in an atom is equal to the number of protons (C) the mass of an atom is equal to the number of protons + the number of neutrons (D) isotopes of an atom contain different numbers of electrons (E) the mass of a proton is the same as the mass of a neutron 13. Consider an atom of rhodium-100 ( Rh). It has: (A) 45 protons, 45 neutrons, 45 electrons (B) 45 protons, 55 neutrons, 45 electrons (C) 55 protons, 45 neutrons, 45 electrons (D) 55 protons, 45 neutrons, 55 electrons (E) 45 protons, 100 neutrons, 45 electrons 14. Tellurium consists of 3 common isotopes. Half of tellurium atoms have a mass of 127, and another 0.05 of tellurium atoms weigh 130. What is the mass of the remaining isotope? The atomic mass of tellurium is 127.6. (A) 125 (B) 126 (C) 128 (D) 129 (E) 131 15. Boron has an atomic mass of 10.8. There are two isotopes of boron – one contains 5 neutrons and the other contains 6 neutrons in the nucleus. What is the fractional abundance of the second one (the one with 6 neutrons)? (A) 0.2 or 1/5 (B) 0.5 or 1/2 (C) 0.67 or 2/3 (D) 0.75 or 3/4 (E) 0.8 or 4/5 -24 -34 8 16. A form of light has an energy of 6.75 x 10 J. Given that h = 6.63 x 10 Js and c = 3.00 x 10 m/s, what is the wavelength of this light? (A) 4.47 x 10-57m (B) 1.34 x 10-4m (C) 2.95 x 10 m (D) 0.0295 m (E) 1.02 x 10 m0 17. Which of the following statements is incorrect? (A) red light has a shorter wavelength than infrared (B) ultraviolet has a higher energy than violet light (C) green light has a higher frequency than blue light (D) gamma rays are the most energetic form of light (E) radiowaves have a longer wavelength than microwaves 3 18. Which of the following is incorrect? (A) The lowest energy p-subshell is the 2p (B) A maximum of 10 electrons can go into a d-subshell (C) Electrons have only certain, allowed energy values (D) A boron atom has electrons in 3 shells (E) All of these are correct 19. What is the electron configuration of ruthenium (Ru)? 2 6 2 6 2 6 2 6 2 6 (A) [Kr]5s 4d (B) [Xe]5s 4d (C) [Kr]5s 5d (D) [Kr]5s 5p (E) [Xe]5s 5d 20. Which of the following represents the electron configuration of Ce? (A) [La]4f 1 (B) [Xe]6s 6d 6f 1 (C) [Xe]6s 5d 4f 1 (D) [Xe]6s 5d 5f 1 (E) [Xe]6s 4f 2 4


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