CHM 101 PRACTICE TEST 1 Page 1 of 4

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1 CHM 101 PRACTICE TEST 1 Page 1 of 4 Please show calculations (stuffed equations) on all mathematical problems!! On the actual test, "naked answers, with no work shown, will receive no credit even if correct. Incorrect answers for which work is shown may receive partial credit. Please answer all questions! You cannot receive any points for an item left blank. 1. Make the following metric conversions. a L to ml b cm to m c centigrams to milligrams 2. Make the following conversions between the metric and American systems. a. A baseball has a weight of ounces. What is its mass in grams? (1oz = g) b. A person is cm tall. What is her height in inches? (1 inch = 2.54 cm) 3. A patient with a fever has a temperature of F. What is his Celsius temperature? (Round your answer to the nearest 0.1 degree) 4. Alcohol boils at 78.5 C. What is this temperature in Fahrenheit? (Again, round your answer to the nearest 0.1 degree.)

2 CHM 101 PRACTICE TEST 1 Page 2 of 4 5. The density of copper is 8.94 g/cc. What is the mass of 42.5 cc of copper? 6. Make the following conversions. a. Convert to exponential notation. b. Convert 8.02 x 10 5 to standard notation. c. Convert 276,000,000,000 to exponential notation. d. Convert 1.67 x 10-3 to standard notation. 7. Match each item in the left column with the one most correct item in the right column. Solid 1. Always consists of the same elements, in the same proportion by mass. Liquid 2. Examples are melting and boiling. 3. Has a definite volume; takes shape of bottom of Gas container. 4. Examples are burning and digestion Hyperthermia 5. The basic building blocks of matter 6. Takes both the volume and the shape of its Hypothermia container 7. Sometimes induced artificially in preparation for Compound heart surgery 8. Has both a definite volume and a definite shape Homogeneous mixture 9. Normal body temperature 10. Composition can very, but a given sample will be Heterogeneous mixture uniform throughout 11. Another name for a high fever Physical change 12. An example is a mixture of sand and water 13. Gold, hydrogen, or chlorine 8. We heat 50.0 g of an unknown substance by adding 205 cal, and its temperature rises by 7.0 EC. What is its specific heat? (formula: Amount of heat = SH X m X ÎT)

3 CHM 101 PRACTICE TEST 1 Page 3 of 4 9. Fill in the correct data about the following isotopes. Use the periodic table to obtain required information. Symbol of element Atomic number Mass number No. of protons No. of electrons No. of neutrons Give one example each of: a. An intensive property of matter: b. An extensive property of matter: 11. Write the symbols of the following elements. Oxygen Calcium Carbon Phosphorus Sodium Zinc 12. Write the names of the following elements. K O Cl Li Fe Hg 13. Write the formulas of compounds in which the combining ratios are the following: a. Potassium : oxygen, 2 : 1 b. Carbon : hydrogen : oxygen, 2 : 6 : 1 c. Lithium : nitrogen : oxygen, 1 : 1 : 3

4 CHM 101 PRACTICE TEST 1 Page 4 of Use the periodic table to find the symbol of one element that matches each of the following descriptions. Some descriptions have more than one correct answer; you only need to list one element per description. Do not use any element more than once! The element in a group by itself A transition metal Radioactive gas found in basements The element whose entire electron configuration is 1s 2 A diatomic molecular element A gaseous halogen The liquid nonmetal Carries oxygen in hemoglobin Diamond and fullerenes Necessary for proper 15. Draw the full orbital diagram (ground-state) for an atom of the element chromium (Cr). 16. Write the full electron configuration (ground-state) of an atom of ruthenium (Ru). 17. Write the ground-state electron configuration, either in full or abbreviated form, for the cation, (Ru 2+ ). 18. Which pair of atoms will form an ionic bond between them? a. O and Cl b. Na and O c. Br and S d. He and Ne e. Br and Br 19. Which pair of atoms will form a polar covalent bond between them? a. Ca and Br b. Ca and S c. Br and Br d. Fe and F e. H and O 20. Which pair of atoms will form a nonpolar covalent bond between them? a. Mg and Fe b. Mg and O c. O and O d. Br and O e. H and O 21. Which pair of atoms will not form any chemical bond between them? a. O and Cl b. Na and O c. Br and S d. He and Ne e. Br and Br

5 PERIODIC TABLE OF THE ELEMENTS 1 IA 18 O 1 H IIA 13 IIIA 14 IVA 15 VA 16 VIA 17 VIIA 2 He Li Be B C N O F Ne Na Mg IIIB 4 IVB 5 VB 6 VIB 7 VIIB 8 9 VIII IB 12 IIB 13 Al Si P S Cl Ar K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr Rb Sr Y Zr Nb Mo Tc (98) 44 Ru Rh Pd Ag Cd In Sn Sb Te I Xe Cs Ba La Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po (209) 85 At (210) 86 Rn (222) 87 Fr (223) 88 Ra Ac Rf (261) 105 Db 106 Sg (263) 107 Bh 108 Hs (265) 109 Mt (266) 110 (269) 111 (272) 112 (277) Lanthanoid Series 58 Ce Pr Nd Pm (145) 62 Sm Eu Gd Tb Dy Ho Er Tm Yb Lu Actinoid Series 90 Th Pa (231) 92 U Np (237) 94 Pu (244) 95 Am (243) 96 Cm (247) 97 Bk (247) 98 Cf (251) 99 Es (252) 100 Fm (257) 101 Md (258) 102 No (259) 103 Lr

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