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Ch 1-2 Worksheets.Docx Worksheet 1 – Matter & Measurement MCQ Name: _____________________ 1. The element chromium has as its chemical symbol A. C B. Co C. Cr D. Cu 2. The symbol “S” is used to represent the element: A. silicon B. sodium C. sulfur D. tin 3. An example of a chemical compound is A. air B. brass C. granite D. table salt 4. The two major types of pure substances are: A. compounds and solutions B. compounds and elements C. solutions and elements D. solutions and mixtures 5. A sample cannot be separated into two or more substances by physical means. It must be, A. a compound B. an element C. either a compound or an element D. a mixture 6. All of the following properties of a sample of a pure substance can be used for identification except its A. mass B. density C. melting point D. solubility in 100 g of water 7. A chemical reaction is used to separate A. a compound into its elements B. a mixture into its components C. gases from liquidsD. solids from liquids 8. Distillation can readily be used to separate A. the elements in a compound B. a dissolved solid in a liquid C. a heterogeneous mixture of two solids D. a homogeneous solution of two solids 9. The mass of a sample is 0.00158 g. The number of significant figures in this measurement is A. 1 B. 3 C. 5 D. 6 10. The mathematical operation, [(6.075 - 5.12) + 14.4661 g, yields A. 15 g B. 15.4 g C. 15.42 g D. 15.421 g 11. The mathematical operation, [(13.76 + 1.0078)(0.0155)] g, yields A. 0.23 g B. 0.229 g C. 0.2289 g D. 0.22890 g 12. A beaker's mass is 21.05 g, while the mass of this beaker containing a sample of water is 22.15 g. The mass of the water sample is A. 1 g B. 1.1 g C. 1.10 g D. 1.100 g 13. The number of millimeters (mm) in one kilometer (km) is A. 10 B. 10 3 C. 10 6 D. 10 9 14. Another way to express the volume 0.0087 L is with A. 8.7 x 10 -3 L B. 8.7 x 10 -2L C. 8.7 x 10 2 L D. 8.7 x 10 3 L 15. A car travels a distance of 638 kilometers. This distance in feet is A. 0.0751 B. 0.194 C. 2.09 x 10 6 D. 5.42 x 10 6 16. Another way to express a mass of 25.3 mg is by A. 2.53 x 10 -2 g B. 2.53 x 10 -1 kg C. 253 lb D. 2530 cg AP Chemistry Chapters 1&2 Worksheets Page 1 17. Some units of pressure and their relations are: 1 atm = 1.01325 x 10 5 Pa = 760 torr. If a gas cylinder is pressurized to 542 atm, it could be recorded as A. 0.713 torr B. 4.12 x 10 5 torr C. 5.49 x 10 4 Pa D. 5.35 x 10 -3 Pa 18. Determine the combined length of a 10.12 inch rod and a 6.0 x 10 2 inch rod A. 7.13 x 10 2cm B. 15.49 x 10 2 cm C. 1.5 x 10 3 cm D. 4.6 x 10 3cm 19. As units of energy 1 calorie equals 4.184 joules; convert 8.522 calories to joules. A. 2.497 x 10 -3 joules B. 2.037 joules C. 35.66 joules D. 9.770 joules 20. An individual weighs 92.3 kg; this person's weight in pounds is A. 36 B. 42 C. 98 D. 203 21. The amount of milliliters in 2.5 gallons is, A. 0.0106 B. 2.4 x 10 3 C. 9.5 x 10 3 D. 1.06 x 10 4 22. A certain chemical procedure requires 52.6 cm of iron wire. How many feet of iron wire are required? A. 1.73 B. 11.1 C. 249 D. 1.60 x 10 2 23. There are 4047 m 2 in one acre; determine the area of a 254 acre tract of land in square kilometers. A. 6.28 x 10 -3 B. 1.03 C. 62.8 D. 1.03 x 10 3 24. Several units of mass which are specific to precious metals and gems are provided: 1 carat = 0.200 gram, 1 grain = 0.0648 gram, 24 grains = 1 pennyweight. Determine the difference in mass (in grams) between 24.56 pennyweight of silver and 18.9 carats of diamond. A. 34.42 g B. 52.8 g C. 78.7 g D. 9092 g 25. A pool is filled with water by a hose that delivers water at a flow rate of 1.0 gal/sec. The equivalent flow rate in units of L/min is A. 14 B. 16 C. 57 D. 2.3 x 10 2 26. If pollution due to oxides of nitrogen is at the level of 1.5 x 10 -9 kg/L, how many grams of nitrogen oxides are inhaled with one hundred in 3 of air? A. 2.5 x 10 -6 g B. 4.2 x 10 5 g C. 9.5 x 10 -9 g D. 1.1 x 10 12 g 27. A 58.7 gram sample of an alloy containing 55% copper by mass is prepared. The amount of copper used in this preparation is A. 26 g B. 32 g C. 107 g D. 114 g 28. A 1.28 g sample of copper is heated with sulfur to produce 1.60 g of a compound containing both copper and sulfur. The mass percentage of sulfur in this compound is A. 20% B. 40% C. 60% D. 80% 29. If a steel rod is 1.50% (by mass) carbon and has a mass of 2.50 kg per meter of rod, how many grams of carbon would be found in a 10.0 meter length of rod? A. 375 g B. 167 g C. 150 g D. 0.0600 kg 30. The LD 50 for a chemical is the dose expected to be lethal for 50% of the population. The LD 50 , for sodium cyclamate is 17.0 g per kg of body weight. If an average can of diet soda contains 96 mg of sodium cyclamate and an average adult human weighs 7.0 x 10 1 kg; determine the number of cans of diet soda that must be consumed to achieve the LD 50 . A. 0.40 B. 43 C. 1.14 x 10 3 D. 1.2 x 10 4 AP Chemistry Chapters 1&2 Worksheets Page 2 31. A swimming pool is 60.0 feet long by 25.0 feet wide and is 8.0 feet deep. The water in this pool is treated with chlorine as a disinfectant. If the concentration of chlorine is 0.070% chorine by mass and the density of the water is 1.0 g/cm 3, how many grams of chlorine must be used to treat the pool? A. 2.8 x 10 1 B. 2.6 x 10 2 C. 2.6 x 10 4 D. 2.4 x 10 5 32. The temperature of a system is measured to be 75.4°F. An equivalent temperature would be A. 59.6°C B. 78.1°C C. 297.2K D. 332.7K 33. The boiling point of chlorine is -34.6°C. This temperature expressed in K is A. -30.3 B. 177.4 C. 238.5 D. 307.6 34. The melting point of methanol is -98°C, and its boiling point is 65°C. At room temperature, 70°F, this compound exists as a A. solid B. liquid C. gas D. solid-liquid mixture 35. The mass of a metal cylinder is 21.97 g, and its volume is 11.2 mL. The density of this metal is A. 0.510 g/mL B. 0.542 g/mL C. 1.00 g/mL D. 1.96 g/mL 36. Which would occupy the largest volume? A. 500 g of carbon tetrachloride; density = 1.6 g/mL B. 500 g of benzene; density 0.88 giml C. 500 g of n-heptane; density = 0.68 g/mL D. They will all be the same. 37. The density of lead metal is 11.3 g/mL. The volume of a 53.45 g piece of this metal is A. 4.73 mL B. 211 mL C. 603 mL D. 274 mL 38. The density of aluminum is 2.699 g/mL. If a block of pure aluminum occupies 25.6 mL, its mass in pounds is A. 0.152 B. 69.1 C. 4.31 x 10 3 D. 3.14 x 10 4 39. The density of methanol is 0.8127 g/mL. An equivalent expression of this density in pounds per cubic inch is A. 0.02963 B. 0.1493 C. 4.228 D. 13.32 40. How much water (density = 1.0 g/mL) will be lost from a full container if 52.5 grams of silver (density = 10.5 g/mL) are placed in the container? A. 0.2 g B. 5.0 g C. 62.7 g D. 551 g 41. A student collects the following data on a piece of metal by weighing it on a piece of paper and measuring the volume of water displaced in a graduated cylinder.
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