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Final Exam Review

This review encompasses essential chemistry topics including atomic structure, electron configurations, and chemical reactions. Key points of focus include the number of protons and valence electrons in sulfur and arsenic atoms, discoveries by J.J. Thomson and Rutherford, the definition of physical and chemical properties, balancing chemical equations, and understanding orbitals. Additional insights cover atomic radius trends, ionization energy changes, and precipitation reactions. Preparing with these concepts will enhance understanding and performance in final exams.

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Final Exam Review

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  1. Final Exam Review

  2. How many protons in a sulfur atom?

  3. How many protons in a sulfur atom? • 16

  4. How many valence electrons in an arsenic atom?

  5. How many valence electrons in an arsenic atom? • 5

  6. J.J. Thomson discovered the _________ .

  7. J.J. Thomson discovered the _________ . • electron

  8. Rutherford discovered the _________ .

  9. Rutherford discovered the _________ . • nucleus

  10. How many orbitals can be in each sublevel? • s • p • d • f

  11. How many orbitals can be in each sublevel? • s: 1 • p: 3 • d: 5 • f: 7

  12. Define: physical property

  13. Define: physical property • Can be observed without a change in composition

  14. Define: chemical change

  15. Define: chemical change • Involves a change in composition. It’s the same as a chemical reaction.

  16. How many atoms in 1.3 moles of Carbon?

  17. How many atoms in 1.3 moles of Carbon? • 7.8 x 1023

  18. Balance:CH4 + O2 CO2 + H2O

  19. Balance:CH4 + O2 CO2 + H2O • CH4 + 2 O2 CO2 + 2 H2O

  20. State type of reaction & complete equation • AlPO4 + Ca(NO3)2

  21. State type of reaction & complete equation • AlPO4 + Ca(NO3)2 Al(NO3)3 + Ca3(PO4)2

  22. Balance the equation • AlPO4 + Ca(NO3)2 Al(NO3)3 + Ca3(PO4)2

  23. Balance the equation • 2 AlPO4 + 3 Ca(NO3)2 2 Al(NO3)3 + Ca3(PO4)2

  24. Write the formula forammonium carbonate

  25. Write the formula forammonium carbonate • (NH4)2CO3

  26. Write the formula forIron (III) Carbonate

  27. Write the formula forIron (III) Carbonate • Fe2(CO3)3

  28. What is the molar mass of ferrous phosphate?

  29. What is the molar mass of ferrous phosphate? • Fe3(PO4)2 • 357.5 g/mole

  30. How many neutrons are there in sulfur-33 ?

  31. How many neutrons are there in sulfur-33 ? • 17

  32. What are orbitals?

  33. What are orbitals? • Areas of highest probability of electron location

  34. What is a polar covalent bond?

  35. What is a polar covalent bond? • A bond in which the electrons are shared unequally among the atoms

  36. Draw the Lewis structure for SiO2

  37. O Si O Draw the Lewis structure for SiO2

  38. Write the electron configuration for Fe

  39. Write the electron configuration for Fe • 1s22s22p63s23p64s23d6

  40. What are the valence electrons for Br?

  41. What are the valence electrons for Br? • 4s24p5

  42. Additional for Honors Chemistry

  43. How does the atomic radius change going across a row and down a group on the periodic table?

  44. How does the atomic radius change going across a row and down a group on the periodic table? • Decreases across a row (period) • Decreases down a group

  45. How does the ionization energy change going across a period and down a group on the periodic table? • Increases across a row (period) • decreases down a group

  46. In the reaction AlPO4 + Ca(NO3)2 Al(NO3)3 + Ca3(PO4)2 Which product will form a precipitate?

  47. In the reaction AlPO4 + Ca(NO3)2 Al(NO3)3 + Ca3(PO4)2 Which product will form a precipitate? • Ca3(PO4)2

  48. In the reaction MgCl2 + Ag2(SO4)  Which product will form a precipitate?

  49. In the reaction MgCl2 + Ag2(SO4)  Which product will form a precipitate? • AgCl

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