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Chemistry
9th -
12thgrade
Chemistry 3.3 - Solving Conversion Problems
23 questions
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- 1. Multiple ChoiceHow are two parts of a conversion factor related?They aren't.They are equivalent.They are non-equivalent.
- 2. Multiple ChoiceIn a conversion factor, the smaller number is part of the quantity that has the ___________ unit. The larger number is part of the quantity that has the ___________ unit.larger; smallersmaller; largersimple; complexcomplex; simple
- 3. Multiple ChoiceTrue or False? The actual size of a measurement multiplied by a conversion factor remains the same, because the measurement being converted is multiplied by unity.TrueFalse
- 4. Multiple ChoiceWhich of the following is NOT a conversion factor that relates hours and minutes?1 hr/60 min60 min/1hr1 min/60 hr
- 5. Multiple ChoiceThe average lead for a mechanical pencil is 6.0 cm long when it is new. Which conversion factor would you use to find the length in inches?2.54 cm / 1 in1 in / 2.54 cm1 in / 6.0 cm6.0 cm / 1 in
- 6. Multiple ChoiceA student is aksed to calculate the volume, in milliliters, of 2 cups of oil. There are 225 mL per cup. The student calculates the volume as follows:
Volume = 2 cups (1cup÷25mL) = 0.08 cup
Which of the following is NOT an error the student made?The student was trying to solve for volume.The conversion factor was inverted.25 mL was used instead of 225 mL.The unit in the answer is incorrect. - 7. Multiple ChoiceTrue or False? Dimensional analysis is a way to analyze and solve problems, using the units, or dimensions, of the measurements.TrueFalse
- 8. Multiple ChoiceA container can hold 65 grams of water. Circle the conversion factor needed to find the mass of water that 5 identical containers can hold.5 containers / 65 grams1 container / 65 grams65 grams / 1 container65 grams / 5 containers
- 9. Multiple ChoiceConverting between units is easily done using ____________.conversion factorschemistry magicmath magicjust plain ol' magic
- 10. Multiple ChoiceWhich of the following conversion factors would you use to convert tablespoons to milliliters?4 fluid ounces / 1 tablespoon1 tablespoon / 4 fluid ounces1 tablespoon / 15 mL15 mL / 1 tablespoon
- 11. Multiple ChoiceConvert the following:
0.25 meters to centimeters25 cm0.25 cm2.5 cm250 cm - 12. Multiple ChoiceConvert the following:
9.8 grams to kilograms0.0098 kg0.98 kg0.098 kg9.8 kg - 13. Multiple ChoiceConvert the following:
35 milliseconds to seconds0.035 seconds0.35 seconds3.5 seconds0.0035 seconds - 14. Multiple ChoiceConvert the following:
4.2 deciliters to liters0.42 Liters4.2 Liters42 Liters0.042 Liters - 15. Multiple ChoiceComplex conversions between units may require using __________________ conversion factor(s).less than onemore than onean infinite number ofzero
- 16. Multiple ChoiceHow many conversion factors would you need to use to find the number of liters in a cubic decimeter?onetwothreefour
- 17. Multiple ChoiceConvert the following:
8.1 cm converted into nanometers8.1 x 107 nm8.1 x 109 nm8.1 x 1011 nm8.1 x 10-7 nm - 18. Multiple ChoiceConvert the following:
0.35 lb is how many grams?
(conversion factor: 1 kg = 2.2 lb)1.6 x 102 grams7.7 x 10-4 grams1.6 x 10-2 grams7.7 x 104 grams - 19. Multiple ChoiceConvert the following:
0.46 mL to microliters (μm)4.6 x 102 μm4.6 x 10-2 μm - 20. Multiple ChoiceWhich of the following is NOT a common measurement expressed as a ratio of two units?SpeedDensityMolar massLength
- 21. Multiple ChoiceWhat technique can be used to convert complex units?dimensional analysiscolumn mergingpivot pointsFaraday flips
- 22. Multiple ChoiceA normal concentration of glucose, or sugar, in the blood is 95 mg/dL. How many grams of sugar would be present per liter of blood?9.5 x 10-1 grams/L9.5 x 10-2 grams/L9.5 x 102 grams/L9.5 x 103 grams/L
- 23. Multiple ChoiceA man can run a mile in 4 minutes. Calculate his average speed in kilometers per hour. (1 Km = 0.62 miles)2.4 x 101 km/hr4.1 x 10-2 km/hr9.3 x 100 km/hr3.9 x 102 km/hr
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