Instructor: Ms. Ardelia Ford Date: Time: Location: N226
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1 Prep Chemistry Fall 2014 Final Review Name: Date: Period: Instructor: Ms. Ardelia Ford Date: Time: Location: N FALL SEMESTER EXAM SCHEDULE 7:55 9:55 AM 10:05 AM 12:05 PM Dismissal Tuesday, Dec st Period Final 2 nd Period Final at 12:05 PM Wednesday, Dec rd Period Final 4 th Period Final at 12:05 PM Thursday, Dec th Period Final 6 th Period Final at 12:05 PM Friday, Dec th Period Final 0 or 8 th Period Final after your last exam On the day of your final exam, you will be provided with: The Periodic Table The STAAR chart You will need to bring: #2 Pencil Eraser Scientific calculator (Bring one of your own. You will NOT be allowed to share or borrow from a classmate during the test.) This review is designed to help you study for the Chemistry final but should not be used as the only study method. Make sure to study all notes, warm-ups, quizzes, tests, labs, etc. to prepare for this exam. Good Luck! 1) Define Precision vs. Accuracy. 2) How many significant figures are there in each of the following numbers? a b c d e f g h. 45 i
2 j x 10 3 k. 1.0 x 10-3 l. 100 m n ) Burning wood for fire is an example of a change. 4) Which of the following is a chemical property of butter? a. Its yellow color b. The fact that it melts at 110 C c. Its greasy feel d. The fact that it becomes rancid 5) What is the difference between a mixture and a pure substance? 6) Classify each of the following as: homogeneous mixture, heterogeneous mixture, compound or element. a. Gold b. Steel c. Salt water d. Pizza e. Table salt f. Copper g. Rust h. Granite i. Milk j. Air k. Neon l. Alloy 7) What is the density of a metal with a mass of 20.0 g and a volume of 3.8 cm 3?
3 8) Would the metal in the previous question (#7) sink or float in water? 9) The density of a metal is 2.54 g/cm 3. What is the volume of 7.55 g of this metal? 10) Using skills in dimensional analysis, convert the following: a. 445 km to mm b. 88 mg to kg c. 992 ml to L d. 782 kg to mg e km to mm f. 1.0 kg =? g g. 2.5 kg =? mg h. 5.0 cm =? m i cm =? mm j. 2.8 L =? ml
4 11) What is the density (in g/cm 3 ) of an object that has a volume of 50.3 cm 3 and mass of 22.4 g? 12) What is the mass of a piece of copper that has a volume of 20.0 cm 3? The density of copper is 8.92 g/cm 3 13) What is the proper response to a discovery of a cracked glassware during a lab? 14) Define physical change and physical property. Give 2 examples of each. 15) Compare and contrast intensive and extensive properties. Give 2 examples for each. 16) What are 5 characteristics of a chemical reaction? 17) Express the following numbers in scientific notation: a b c d
5 18) Identify the name and function of each piece of laboratory equipment. 19) What laboratory equipment is used to accurately measure the volume of a liquid? 20) Arrange the following atoms in the order of increasing atomic radius: a. O, S, Se, Te b. P, S, Cl, Ar c. K +, Ca 2+, S 2-, Cl - 21) Arrange the following atoms in the order of increasing electronegativity: a. O, S, Se, Te b. P, S, Cl, Ar c. K, Ca, S, Cl 22) Arrange the following atoms in the order of increasing ionization energy: a. O, S, Se, Te b. P, S, Cl, Ar c. K, Ca, S, Cl 23) Determine the number of protons, neutrons and electrons for each of the following: a. Si-28 b. Na-23 c. Fr-223 d. Pd-106 e. Cr-52
6 f. Na g. O h. Zn i. Na +1 j. O -2 k. U-235 l. H-3 24) Determine the value or symbol for x in each of the following: a. 31 X P c. 48 X 22 b. 108 Ag + X d. 127 X ) Briefly describe each of the following scientists contributions to atomic theory and structure: a. John Dalton b. J.J. Thomson c. Earnest Rutherford d. Niels Bohr.
7 26) Use the long notation, short notation and orbital diagrams to write the electron configuration for each of the following: a. K b. V c. Na d. P e. Br -
8 27) Define the following: a. Cations b. Anions c. Isotopes d. Valence electrons 28) For each of the following determine the: Number of Valence Electrons Lewis Structure Representative Formula Molecular Geometry Bond Angles a. CO 2 b. BF 3 c. CH 3Cl d. NH 3
9 e. SO 2 f. CH 3OH g. CCl 4 h. HBr i. H 2O j. H 2 k. CO
10 l. Hydroxide ion m. Nitrate ion 29) Identify elements having the following electron configurations: a. 1s 2 2s 2 2p 6 3s 2 3p 3 b. [Ar]4s 1 c. Contains four electrons in its third and outer main energy level 30) List some characteristics of a metal. 31) Identify where the metals, nonmetals, and metalloids are located on the Periodic table.
11 Questions refer to the following elements A) Br B) K C) Ba D) Cs E) Ca 32) The element with the lowest ionization energy 33) The smallest atom 34) The element with the lowest electronegativity 35) The alkaline earth element with the smallest atomic radius Question refer to atoms for which the occupied atomic orbitals shown below. 36) Represents a noble gas 37) Represents a carbon atom 38) Represents an atom that has four valence electrons. 39) Represents a transition metal. 40) Draw orbital diagrams for the following elements: a. Nitrogen b. Calcium c. Zinc 41) Create a Venn Diagram to compare and contrast ionic and metallic bonds.
12 42) Calculate the average atomic mass (amu) of an element with the following percent abundance: Mass Abundance amu 38.4% amu 17.2% amu 44.4% 43) Assume chromium has 4 isotope forms. Calculate the average atomic mass based on the natural abundance and weights indicated below: Form A: 33% - 22 grams Form B: 13% - 25 grams Form C: 35% - 20 grams Form D: 19% - 34 grams 44) What are the exceptions to the Octet Rule? 45) How can you distinguish between ionic and covalent substances? 46) List some properties of ionic and covalent substances
13 47) What is the wavelength of a photon that has a frequency of 5.47 x Hz? 48) What is the energy of light emitted at the frequency of 3.57 x Hz? 49) The energy of a photon is 5.87 x J. What is its wavelength? 50) Calculate the wavelength of a green traffic sign with a frequency of 6.10x10 14 Hz. 51) Calculate the wavelength of a yellow flower with an energy of 3.40x10-19 J. 52) Draw and label the parts (wavelength, crest, trough) of a wave.
14 53) A chemistry student s investigation is described below. 1. The student obtains 15 g of an unknown substance. 2. The student notes that at room temperature the substance is a solid and is colored white. 3. The student determines that the density of the substance is 2.17 g/cm 3 4. The student then determines that the substance is soluble in water. The student determines that the unknown substance is sodium chloride. Which of the following is an extensive property of sodium chloride? A) Mass of 15 g B) White color C) Density of 2.17 g/cm 3 D) Solubility in water 54) Measure the length of the Aluminum metal with Ruler A and Ruler B.
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