CHAPTER 2: PRACTICE QUIZ

CHAPTER 2: PRACTICE QUIZ25 Questions; Time — 30 minutes1. How many significant digits are in the following measurement 0.045060 cma) 3b) 4c) 5d) 6e) 72. Which of the following men is credited with discovering the electron?a) Thompsonb) Boylec) Lavoisierd) Millikane) Rutherford3. Which of the following men suggested that mass is neither created nor destroyed in chemical reactions?a) Priestlyb) Lavoisierc) Boyled) Millikane) Rutherford4. How many neutrons are there in an isotope of strontium with a mass number of 90?a) 38b) 44c) 45d) 52e) 565. Bromine is a member of what family name?a) alkali metalsb) alkaline earth metalsc) liquidsd) halogense) noble gases6. How many electrons are in the ion F − ?a) 8b) 9c) 10d) 11e) 197. What is the name of the compound Rb 2 S?a) rubidium sulfideb) dirubidium sulfidec) dirubidium monosulfided) rubidium I sulfidee) rubidium II sulfide

8. What is the name of the compound Cu 2 S 3 ?a) copper sulfideb) dicopper trisulfidec) copper trisulfided) copper II sulfidee) copper III sulfide9. What is the name of the compound B 2 O 3 ?a) boron oxideb) diboron trioxidec) boron trioxided) boron II oxidee) boron III oxide10. What is the name of the compound OF 2 ?a) oxygen fluorideb) monoxygen difluoridec) oxygen difluorided) Oxygen I fluoridee) Oxygen II difluoride11. What is the name of the compound FeSO 4 ?a) Iron sulfideb) Iron sulfatec) Iron II sulfided) Iron II sulfatee) Iron sulfide-oxide12. What is the name of the compound MgCO 3 ?a) Manganese carbideb) Magnesium carbidec) Magnesium carbonated) Magnesium II carbonatee) Magnesium carbide trioxide13. Write the formula for the compound Na 2 SO 4 .a) Sodium sulfateb) Disodium sulfatec) sodium I sulfated) sodium sulfidee) sodium II sulfide14. Write the formula for the compound aluminum hydridea) Al(OH) 3b) AlHc) AlOHd) AlH 3e) Al 2 H 315. The formula of sodium tungstate is Na 2 WO 4 and that of lead phosphate is Pb 3 (PO4) 2 . What is the formula forlead tungstate?a) PbWO 4b) Pb 2 (WO 4 ) 3c) Pb 3 (WO 4 ) 2d) Pb 3 (WO 4 ) 4e) None of the above

16. Which of the following exist as diatomic molecules at room temperature?a) Alkali metalsb) Alkaline earth metalsc) Noble gasesd) Halogense) Transition metals17. The density of sugar is 1.59 g/cm 3 . The mass of a sample is 4.0 g. Find the volume of the sample.a) 2.5 cm 3b) 6.36 cm 3c) 0.39 cm 3d) 2.5 g/cm 3e) There is not enough information18. How many ml in 100 cubic centimeters?a) 0.1b) 1c) 10d) 100e) 100019. 0.05 cm is the same asa) 0.00005 mb) 0.005 mc) 0.05 mmd) 0.5 mme) There is not enough information20. 30 degrees celsius equalsa) -243 Kb) 9 Kc) 243 Kd) 303 Ke) There is not enough information21. How many cubic inches does a box have if it is 2.00 cm tall, high and wide?a) 131b) 3.15c) 1.24d) 0.488e) 20.322. Round 31, 054 miles to 3 significant digits.a) 310b) 31050c) 3.10 x 10 4d) 31,100e) 31050.023. The density of aluminum is 2.70 g/cm 3 . The volume of a solid piece of aluminum is 1.50 cm 3 . What is themass?a) 1.50 gb) 1.80 gc) 2.70 gd) 4.05 ge) There is not enough information

24. Which statement about density is NOT true?a) density changes with temperatureb) density is a chemical propertyc) density is a physical propertyd) the density of ice is less than that of watere) There is not enough information25. How many minutes are in 1 week?a) 168b) 1440c) 10080d) 100800e) There is not enough information

----------Key----------1. (c)2. (a)3. (b)4. (d)5. (d)6. (c)7. (a)8. (e)9. (b)10. (c)11. (d)12. (c)13. (a)14. (d)15. (a)16. (d)17. (a)18. (d)19. (d)20. (d)21. (d)22. (d)23. (d)24. (b)25. (c)