CH100: Practice Exam #1 (Fall 2003)Instructor: Tony Zable 11. Define the following terms: a) hypothesisb) theoryc) massd) volumee) densityf) temperatureg) heat2. Express 549000000 in scientific notation.a) 5.49 x 10-8 b) 5.49 x 108c) 54.9 x 10-7d) 549 x 108e) 549 x 1063. A metric unit for mass isa) kgb) poundc) meterd) furlonge) ton4. Convert: 4.96 kg = _________mg = __________ ng5. The SI system prefix that corresponds to a factor of 103 isa) kilo b) deci c) centi d) millie) none of these6. A cubic centimeter (cm3) is equivalent to what other metric volume unit?a) milliliter b) literCH100: Practice Exam #1 (Fall 2003)Instructor: Tony Zable 2c) deciliter d) centimetere) millimeterCH100: Practice Exam #1 (Fall 2003)Instructor: Tony Zable 37. Using the rules of significant figures, calculate the following: 4.0021 - .004 = a) 3.998b) 4c) 3.9981d) 4.00e) 4.08. How many significant figures are in the measurement 3.080 g?a) 4 b) 3 c) 2 d) 1 e) 09. The result of the following multiplication expressed in scientific notation to thecorrect number of significant figures is: (2.08 x 105)(7.0 x 10-5) =a) 1.4 x 101b) 1.456 x 101c) 1.5 x 101d) 1 x 101e) 1.46 x 10110. Convert 4301 mL to qts. (1L = 1.060 qt.)a) 4559 qts.b) 4.058 qts.c) 4058 x 106 qts.d) 4058 qts.e) 4.559 qts.11. Convert: 16.7 oF = ________ oC = _________ K12. Cesium melts at 302 K and boils at 944 K. What would be the physical state of cesium at 25 oC?13. Gold has a density of 19.3 g/cm3. Calculate the mass of a gold bar measuring 0.200 m by 0.100 m by 0.100 m.CH100: Practice Exam #1 (Fall 2003)Instructor: Tony Zable 414. A piece of an unknown metal weighs 355.2 grams and occupies a volume of 72.2 mL. What is the density of this metal?15. The state of matter for an object which has a definite volume but not a definite shape is a) solid stateb) liquid statec) gaseous stated) elemental statee) mixed state16. Classify each of the following as a physical (P) or a chemical (C) change.___ a) cooking an egg ___ b) boiling water ___ c) ironing a shirt ___ d) burning gasoline ___ e) decomposing water ___ f) evaporating alcohol ___ g) sanding a table top ___ h) grinding grain ___ i) fermenting fruit juice ___ j) dissolving sugar in water17. The air is an example ofa) a compound b) a homogeneous mixture c) a heterogeneous mixtured) an element e) an alloy18. A 5.10 g sample of iron is heated from 36.0 oC to 75.0 oC. The amount of energy required is 89.5 J. The specific heat capacity of this sample of iron isa) 17800 J/g oCb) 0.900 J/g oCc) 11.7 J/g oCd) 0.450 J/g oCCH100: Practice Exam #1 (Fall 2003)Instructor: Tony Zable 5e) 2.22 J/g oC19. Calculate the heat given off when 177.0 grams of copper cools from 155.0 oC to 23.0 oC. The specific heat capacity of copper is 0.385 J/g
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