NAME: PERIOD: Chemistry 1 Study Guide Midterm 2015 ** Use your notes, workbook, foldables or the internet! ** All notes can be retrieved from my website on my calendar if needed. **This is due on JANUARY 6th (B Day) and JANUARY 7th (A DAY) You will be graded on completion. This will be worth a TEST GRADE!** 1. Name and explain the five traditional areas of study for chemistry? 2. List and explain the steps of the scientific method? 3. Define quantitative and qualitative data. Give two examples of each. 4. What is Chemistry? 5. Define dependent and independent variables. 6. List 10 lab safety rules. (These you may have to look up online Flinn Safety Lab Rules unless you have your quiz from the beginning of the year or a great memory! =) You got this! Hard work and dedication will be rewarded!! 1
7. Convert the following to scientific notation: a. 0.0000398 b. 0.00228 c. 1,599,000,000 d. 135,000,000,000 8. Convert the following to standard form: a. 1.5 x 10 5 b. 3.5 x 10 9 c. 4.4 x 10 3 d. 7.853 x 10 3 9. Explain the difference between a gas and a vapor. 10. Define and give two examples of intensive and extensive properties. 11. Provide five examples of chemical changes and five examples of physical changes. 12. Of the five examples above, which are reversible and which are irreversible? 13. List four clues that can tell us whether or not a chemical change has occurred. You got this! Hard work and dedication will be rewarded!! 2
14. State the Law of Conservation of Matter. 15. Explain how matter is conserved in a campfire. 16. Define homogeneous and heterogeneous mixtures. 17. Give three examples of homogeneous mixtures. 18. Give three examples of heterogeneous mixtures. 19. Draw a concept map for matter. You got this! Hard work and dedication will be rewarded!! 3
20. Greek philosophers believed all matter was composed of what four elements. 21. Explain how the cathode ray tube proved the existence of electrons. 22. Who performed the cathode ray tube experiment? 23. Explain how the following scientists contributed to the atomic theory. a. Mosely b. Thompson c. Rutherford d. Mendeleev e. Dalton f. Democritus 24. Who developed this model and what did he call it? Label the model. You got this! Hard work and dedication will be rewarded!! 4
25. Oxygen has three isotopes. Oxygen 16, Oxygen 17, and Oxygen 18. The natural abundance for each is 99.76%, 0.037%, and 0.204% respectively. What is the atomic weighted mass for oxygen. Show all work. 26. Define Ionization Energy. 27. Which element has the greater ionization energy of the following? Mg or Cl Ag or I O or F 28. What is first ionization energy? second ionization energy? 29. What is electron affinity? 30. Which element has the greater electron affinity? Mg or Cl Ag or I O or F 31. What is atomic radius? 32. Which element has greater atomic radius? Mg or Ba S or Po F or Fr 33. Which element has the greater metallic character? Mg or Ba S or Po F or Fr 34. What is electronegativity? 35. Which element has the greater electronegativity? Rb or Se Al or Cl F or I 36. What is the periodic law? 37. Who was the first person to arrange a periodic table? 38. How is the modern day periodic table arranged? You got this! Hard work and dedication will be rewarded!! 5
39. What are the main three classes of elements and their properties? a. b. c. 40. Describe the following and give two examples of each: alkali metal alkaline earth metal halogen noble gas transition element inner transition element representative element 41. Write out the electron configurations and the orbital diagrams for the following elements: Ni Ti Rb 42. Write out the noble gas configurations for the following elements: Ac Pa You got this! Hard work and dedication will be rewarded!! 6
43. What is an ion? Give an example. 44. What is the difference between a cation and an anion? 45. How are ionic compounds formed? Are they charged or neutral? Why? 46. LIst several properties of ionic compounds. 47. What are alloys? How are they useful? Give three examples. 48. Identify each crystalline structure below as either body centered cubic, face centered cubic or hexagonal close packed. 49. Round each measurement to three significant figures. a. 87.073 meters b. 0.01552 meters c. 629.55 meters 50. Solve the following using the correct significant figures. a. 61.2 + 9.35 + 8.6 = b. 34.61 17.3 = c. 7.55 x 0.34 = d. 2.10 x 0.70 = You got this! Hard work and dedication will be rewarded!! 7
51. Convert 5 km per hour to meters per second using dimensional analysis. Show all work. 52. Convert 5 gallons to ounces. Show all work. 53. How many minutes are there in exactly one week. Show all work. 54. In the lab, a unknown piece of metal is found to have a volume of 245 cm 3 and a mass of 612 g. Calculate the density and identify the metal from the table below. Metal Density Al 2.70 g/cm 3 Pb 11.4 g/cm 3 Au 19.3 g/cm 3 55. A bar of silver has a mass of 68.0g and a volume of 6.48 cm 3. What is the density of silver? 56. Fill in the following table: Element Name Atomic Number Protons Neutrons Mass number Neon 35 87 You got this! Hard work and dedication will be rewarded!! 8