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Name: Period: 3 AP Chemistry_ Formative Quiz #2 on Chapter 1 (9-8-2017)Please read the questions below and select the most appropriate answer on the bubble sheet on page -3 (4 points per question x 25, 100 points total. Q#21 is a bonus question worth 6 points)Which over the counter medicine has 22.5 mg of the active ingredient per tablet. This number in grams is:22.55 x 105 g b. 2.55 x 10-2 g c. 2.25 x 104 g d. 2.25 x 103g If you spill acid on your bench, which of the following is the correct way to clean it up?Wear goggles, gloves and apron and pour water to dilute the spillWear goggles, gloves and apron and pour water to dilute the spill and then wipe with paper towelsPour an absorbent substance like cat litter and wait for the teacher to clean upWear goggles, gloves and apron and blot with paper towelsWhich of the series of units is ordered from the smallest to the largest?pg, μg, kg, mgμm, mm, cm, KmnL, dL, mL, Lmol, μmol, mol, nmolWhich of the following is incorrect about mass and weight?Its is possible for an object to lose weight and not lose the amount of substanceThe mass of an object depend on gravity and the weight of the object does notThe mass of an object will always be the same regardless of the amount of gravityThe weight of the object depends on the gravity of the location it is at 23.5 °C in Kelvin after rounding is:297.0 K b. 29.65 K c. 296.4 K d. 296.0 KWhich of the following statements is a description of research involving Biochemistry?The study of extraterrestrial elements found in a meteorite.Biochemistry is the study of carbon based substances and processes.The study of the composition of calcium and other substances in kidney stones. Study of how soil nutrients affect the process of photosynthesis in mustard plants.The number of significant figures in 0.03491000 is:9 b. 8 c. 4 d. None of the aboveWhat is the correct order of the steps in the scientific method?Hypothesis, observation, experiments, theory, scientific lawObservation, scientific law, experiments, hypothesis, theoryObservation, hypothesis, theory, experiments, scientific lawObservation, hypothesis, experiments, theory, scientific lawThe accurate length of the Aluminum tube below is:a. 4.15 cm b. 4.25 cm2 c. 42.5 mm2 d. 42.5 mm0.00000040239 can be represented with scientific notation as:40.239 x 108 b. 4.0239 x 107 c. 4.0239 x 10-7 d. 40.239 x 10-8 Answer questions 9-12 based on the figure below. The figures indicating compounds are: a. A , B, C, and D b. A , B and D c. A, and B d. E and C An element in gaseous form and an element in liquid form respectively are shown in:a. C and E b. B and A c. B and E d. E and CFigures indicating a heterogeneous mixture and a homogeneous mixture, respectively are:a. A and D b. D and B c. D and A d. D and EWhich figure indicated a substance?a. A and C b. B and E c. E and C d. A and BLavoisier revolutionized chemistry by:Proving the existence of phlogiston in combustion of metals and measurements of mass.Disproving the existence of phlogiston in combustion of metals and measurements of mass.Developing very sensitive scale for mass measurements.Developing a sensitive scale for mass analysis and using it for accurate and precise mass measurements of metals before and after combustion to disprove the phlogiston hypothesis.Which of the following is most appropriate for measuring 25 ml of magnesium chloride solution?3200400223520The beaker because more stable and the liquid is less likely to spill due to its larger mouthThe graduated cylinder because it is calibrated to measure liquid more preciselyThe graduated cylinder because it has a stronger base for support Either the cylinder or the beaker would do fine00The beaker because more stable and the liquid is less likely to spill due to its larger mouthThe graduated cylinder because it is calibrated to measure liquid more preciselyThe graduated cylinder because it has a stronger base for support Either the cylinder or the beaker would do fine Which of the following equipment would provide the most precise volume measurement for an irregular shaped golf ball-sized object?A 500ml graduated measuring cylinder A 25cm ruler, and a balanceA 500ml beaker or a 250ml graduated measuring cylinder Graduated flask and a graduated cylinderThe SI based unit measure met for Mass, Length, time, amount of substance and volume are:Grams, meters, hours, moleKilogram, centimeters, seconds, millimoleKilogram, kilometer, second, moleGrams, meters, seconds, moleA cube has a volume of 20cm3. Its volume in millimeters is: 20mm3b. 200mm3 c. 20000mm3 d. None of the above (Questions 16-18) Four students made 4 separate mass recordings in grams of a magnet, each one using a different balance. Answer questions 16-18 based on the accuracy and precision of the mass measurements. The actual mass of the object is 5.6g.JennyReubeusOlivanderLexiWeighing -13.95.95.536.52Weighing -24.76.25.566.50Weighing - 36.15.85.516.53Weighing - 45.76.05.546.51The student with the most precise and most accurate measurement is:Jenny b. Reubeusc. Olivander d. Lexi The student whose balance has a systematic error is:Jenny b. Reubeusc. Olivander d. Lexi The percent error for Reubeus’s mass measurements is (hint: calculate the average mass for his 4 measurements):a. 0.895% b. 8.95% c. 9.85 % d. 98.5%Which of the following is a method of separating a homogenous mixture of liquids with differing boiling points?Chromatography b. Filtrationc. filtration or chromatography d. DistillationWhich statement about density is MOST accurate?Density is a chemical propertyDensity is a physical propertyDensity is physical property that is affected by temperatureDensity is a chemical property that is affected by temperature1 mole of carbon has a mass of 12.0 g. How many millimoles of carbon are found in 36 mg of carbon? Provide a short answer for the question. Show your calculations. Indicate your answers in this bubble sheet by coloring the appropriate answer with a pencil or pen.Chemistry Quiz-2 Date: _________ Class Period:____ Your FULL Name: ______________________________ ................
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