AP CHEMISTRY SUMMER ASSIGNMENT 2013 Flowing Wells High School The AP Chemistry course is designed to be the equivalent of the general chemistry course usually taken during the first college year. It is an extension of either Pre AP or Chem 1-2 you have had in the past and will be adding a significant amount of content and knowledge to your understanding of the subject. Because AP Chemistry serves as a general chemistry course taken in college, a good understanding of the topics discussed in Pre AP/ Chem. 1-2 is essential. To prepare for the rigors of this course, you will be required to complete the worksheet which summarizes many of the important topics of your previous chemistry class. Expect a quiz in the beginning of the year school-year! RESOURCES to help you: For question 1-3 use this tutorial to help you (significant figures): http://www.chem.sc.edu/faculty/morgan/resources/sigfigs/index.html Here is some good website to get help on chemistry topic if you do not remember how to complete a problem: http://www.chemtutor.com/struct.htm http://chemed.chem.purdue.edu/genchem/topicreview/index.php http://chemistrylecturenotes.com/ On line class text ebook and resource site at http://wps.prenhall.com/wps/esm_brown_chemistry_11 Username: eastapchem Password: eastapchem12 Focus on chapter 1-3 ASSIGNMENT: Complete the assigned work on the next pages. These problems will be checked for completion on the first day of school. A quiz on this material will be given by the end of the second week. This assignment should take you approximately 3-4 hours to complete depending how readily recourses are available. Best of luck and cannot wait to see you next year! Mr. Golden william.golden@fwusd.org AP CHEMISTRY SUMMER ASSIGNMENT 2013 Naming Compounds Flow Chart NO Does the Formula begin with H YES Does it begin with a metal which has more than one oxidation number? (e.g.; Fe, Ni, Cu, Sn, Hg) NO YES Name the first element followed by its oxidation number (Roman numeral) Does the formula contain a polyatomic ion? NO YES Are both elements nonmetals NO YES Name the first element, Then the second element With the –ide ending. It is an Acid (must be aqueous) Does the acid contain a polyatomic ion? YES NO Ending of polyatomic ion -ate -ite Name the polyatomic ion, replacing the –ate ending with –ic. Add the word acid. Name the polyatomic ion, replacing the –ite ending with –ous. Add the word acid. Name the first element using the proper prefix. (never mono-). Name the second element with the proper prefix (including mono- and –ide ending. ) 1 mono2 di3 tr4 tetra5 penta6 hexa7 hepta8 octa9 nano10 decaName the first element, then the polyatomic ion. If two elements are present, name both, then the polyatomic ion. (e.g.; NaHCO3 Is sodium hydrogen carbonate) Write the prefix hydro, then the name of the second element with –ic ending. Add the word acid AP CHEMISTRY SUMMER ASSIGNMENT 2013 AP CHEMISTRY SUMMER ASSIGNMENT 2013 Short Answer Each of the following is an example of some of the types of questions that you had answered while in Chemistry. Please answer each of these questions, and show all work with appropriate units and significant digits. A short quiz will be given on these problems once this sheet has been reviewed. 1. The following length measurements were taken by students using several different measuring devices. Find the average of the measurements. Make sure that your answer has the correct number of significant figures. 10.05 cm, 10.1 cm, 9.741 cm, 10.6 cm, 10.5 cm 2. How many significant figure are in the following numbers? a. 2.34g d. 10 000.0km b. 0.0045mL e. 3.21x10-45 c. 10 000km f. 12.45x105 3. Perform the following operation: 3.43 cm × 5.2 cm. Make sure that your answer has the correct number of significant figures. 4. 5. What is the temperature 128 K expressed in degrees Celsius? 6. What is the volume of an object with a density of 7.73 g/cm3 and a mass of 5.4 × 102 g? 7. A cube of a gold-colored metal with a volume of 59 cm has a mass of 980 g. The density of pure gold is 19.3 g/cm3. Is the metal pure gold? Show calculations to justify your answer. 8. List the number of protons, neutrons, and electrons in carbon-13. 9. Consider an element Z that has two naturally occurring isotopes with the following percent abundances: the isotope with a mass number of 19.0 is 55.0% abundant; the isotope with a mass number of 21.0 is 45.0% abundant. What is the average atomic mass for element Z? 10. Which group of elements in the periodic table is known as the alkali metals? 11. Which group in the periodic table is known as the noble gases? 12. What is the electron configuration of sulfur? 13. From which orbital (s, p, d, or f) in lithium atom is an electron transferred to form Li+? 14. What orbital is filled when iodine gains an electron to become a negative ion? 15. In which group in the periodic table do the elements have the highest electronegativity values? 16. Draw the trend for electronegativity, radius of an atom, and melting point on the periodic table. AP CHEMISTRY SUMMER ASSIGNMENT 2013 17. Name the Compound in column I and write the formula for column II a) NH4I a) Magnesium Fluoride b) Fe2(SO3)3 b) Cesium Arsenate c) H3PO4 (aq) c) Boron (III) Silicate d) AgClO3 d) Francium Nitrite e) SnC2O4 e) Cobalt (II) Chloride f) NaCN f) Mercury (I) Permanganate g) Zn(OH)2 g) Mercury (I) Fluoride h) Rb2SiO3 h) Barium Phosphate i) MnO2 i) Bismuth (III) Hydride j) H2O2 j) Aluminum Borate k) KCl k) Gold Oxide l) KC2H3O2 l) Copper (I) Hypochlorite m) CaSO4 m) Tin (II) Chlorite n) Sb2(Cr2O7)3 n) Phosphorous Pentachloride o) Li3P o) Lead (IV) Carbonate 18. Find the mass in grams of 3.10 × 1023 molecules of F2. 19. What is the percent composition of NiO, if a sample of NiO with a mass of 41.9 g contains 33.1 g Ni and 8.8 g O? 20. Complete and balance the following equation. Cd(NO3)2 + NH4Cl → 21. Write a balanced equation for the following: Sodium chlorate undergoes decomposition to form sodium chloride and oxygen. 22. Write a balanced equation for the following reaction. H3PO4(aq) + Ca(OH)2(aq) → Ca3(PO4)2(aq) + H2O(l) 23. If 8.00 mol of NH3 reacted with 14.0 mol of O2, how many moles of H2O will be produced? 4NH3(g) + 7O2(g) → 4NO2 + 6H2O(g) 24. If 5.0 g of H2 are reacted with excess CO, how many grams of CH3OH are produced, based on a yield of 86%? CO(g) + 2H2(g) → CH3OH(l) 25. A mixture of gases at a total pressure of 95 kPa contains N2, CO2, and O2. The partial pressure of the CO2 is 24 kPa and the partial pressure of the N2 is 48 kPa. What is the partial pressure of the O2? 26. Determine the oxidation number of each element in the following compound: HMnO4. AP CHEMISTRY SUMMER ASSIGNMENT 2013 27. For H2SO4, determine the following: a. A Lewis Structure d. The molecular geometry e. The polarity of the molecule. f. Draw any and all possible resonance structures 28. Calculate the molar heat of vaporization (∆H) of a substance if 0.433 mol of the substance absorbs 4.307 kJ when it melts. 29. Calculate the energy released by freezing 26.6 g of a liquid. Its molar mass is 82.9 g/mol and its molar heat of fusion is 4.60 kJ/mol. 30. 50.0 g of a metal at 100.0 °C is placed into 20.0 grams of water at 30.0 °C. After mixing, the temperature is 57.0 °C. What is the specific heat of the metal?