Chemistry 1301 Exam 1
Chemistry 1301 Exam 1 10886
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Popular in Chemistry
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 37 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 2005 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. Which of the following formulas refers to an element? (A) H 2 (B) H 2 2 (C) O2 (D) Xf (E) both C and D 2. Which of the following is NOT a postulate of Dalton’s atomic theory? (A) all matter is made up of atoms (B) atoms are small and indivisible (C) atoms cannot be created or destroyed (D) atoms of a particular element can differ in some way (E) atoms of different elements are different 3. Two substances, A and B, react together to form C and D. When 4.0 g of A react with 5.0 g of B, 6.0 g of C are formed. In another experiment with the same substances, 12.0 g of A are reacted with 15.0 g of B. How many grams of D areformed? (A) 27.0 g (B) 6.0 g (C) 18.0 g (D) 3.0 g (E) 9.0 g 4. 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 5. Which of the following elements does NOT have a symbol taken from a LATIN name? (A) iron (B) copper (C) sodium (D) titanium (E) potassium 6. Which of the following elements is correctly matched with its group? (A) phosphorus is an alkali metal (B) flubber is a halogen (C) manganese is an alkaline earth metal (D) nitrogen is a noble gas (E) sulfur is a chalcogen 1 7. In the list below, how many symbols are incorrectly matched with the element name: Co is cobalt, Fe is fluorine, P is potassium, N is nickel, H is helium (A) 1 (B) 2 (C) 3 (D) 4 (E) 5 8. Which of the following is incorrectly named as a law or theory? (A) The law of gravity that things fall to the ground (B) Dalton’s atomic theory that substances are composed of sub-microscopic particles (C) Charles’ law that the volume of a gas increases as the temperature increases (D) Avogadro’s law that the volume of a gas is proportional to the number of sub-microscopic particles (E) VSEPR theory that sub-microscopic molecules adopt shapes based on electron repulsion. 9. Which of the following statements is FALSE? (A) sulfur does not conduct electricity (B) gold is malleable (C) geranium is a metal (D) silicon is a metalloid (E) hydrogen is a non-metal 10. Which of the following is an actinide? (A) Dy (B) P (C) W (D) Rn (E) U 11. Which of these scientists is NOT matched with the correct nationality? (A) John Dalton was British (B) Antoine Lavoisier was French (C) Ernest Rutherford was British (D) Dmitri Mendeleyev was Russian (E) Niels Bohr was German 12. Which of the following statements is FALSE? (A) atoms contain equal numbers of protons and electrons (B) the mass of an atom is equal to the number of protons + the number of neutrons (C) neutrons have a mass of 1 and a charge of 0 (D) to calculate the number of neutrons in an atom, use the mass in the periodic table (E) the atomic number is the number of protons in an atom 2 13. Which statement is INCORRECT? (A) 6Zn has the same number of protons and neutrons 50 (B) 18n has the same number of electrons and neutrons (C) 41 has the same number of protons and neutrons (D) K has the same number of protons and electrons (E) 23U contains 146 neutrons 14. Tellurium consists of 3 common isotopes. Half of tellurium atoms have a mass of 127, and another 0.45 of tellurium atoms weigh 128. What is the mass of the remaining isotope? The atomic mass of tellurium is 127.6. (A) 126 (B) 127 (C) 129 (D) 130 (E) 131 15. Magnesium has an atomic mass of 24.3. There are two isotopes of magnesium – one contains 12 neutrons and the other contains 13 neutrons in the nucleus. What is the fractional abundance of the first one (the one with 12 neutrons)? (A) 0.3 or 3/10 (B) 0.5 or 1/2 (C) 0.67 or 2/3 (D) 0.7 or 7/10 (E) 0.75 or 3/4 16. 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 -7 17. What is the energy of light that has wavelength of 8.923 x 10 m? (A) 5.912 x 10-31J (B) 2.229 x 10-28J (C) 1.773 x 10-22J (D) 2.229 x 10-19J (E) 1.121 x 10 J 18. Which of the following statements is true? (A) The lowest energy p-subshell is the 1p (B) A maximum of 10 electrons can go into a f-subshell (C) Electrons in atoms have only certain, allowed energy values (D) A boron atom has electrons in 3 shells (E) The fifth shell can contain a maximum of 25 electrons 3 19. What is the electron configuration of bromine? 2 2 1 2 2 6 2 6 2 10 5 5 (A) 1s 2s 2p (B) 1s 2s 2p 3s 3p 4s 4d 4p (C) 4p (D) 1s 2s 2p 3s 3p 4s 4p 5s 5p 2 5 (E) 1s 2s 2p 3s 3p 4s 3d 4p10 5 20. What is the last part of the electron configuration of Gadolinium (Gd) 7 7 7 7 7 (A) 1f (B) 6d (C) 6f (D) 4d (E) 4f 4
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