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Chemistry, Physics, Other Sciences
9thgrade
Chemistry Measurement Review
32 questions
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- 1. Multiple ChoiceWhen a test instrument is calibrated, does its accuracy, precision, or reliability improve?precisionaccuracyreliabilityall of the above
- 2. Multiple ChoiceWhat is the density of an object having a mass of 8.0 g and a volume of 25 cm3?0.32 g/cm33.1 g/cm3200 g/cm32.0 g/cm3
- 3. Multiple ChoiceWhat is the metric system prefix for the quantity 0.000 001?decimicrocentikilo
- 4. Multiple ChoiceHow many significant figures are in the measurement 40,500 mg?fourfivethreetwo
- 5. Multiple ChoiceWhich of the following equalities is NOT correct? Use the table behind this question to help you.100 cg = 1 g10 kg = 1g1 cm3 = 1 mL1000 mm = 1 m
- 6. Multiple ChoiceWhat is the quantity 0.0075 meters expressed in centimeters? Use the table behind this question to help you.70.5 cm7.5 cm0.075 cm0.75 cm
- 7. Multiple ChoiceWhich group of measurements is the most precise? (Each group of measurements is for a different object)2.0 g, 3.0 g, 4.0 g1 g, 3 g, 5 g2 g, 2.5 g, 3 g2 g, 3 g, 4 g
- 8. Multiple ChoiceIn the measurement 0.503 L, which digit is the estimated digit?53the 0 immediately to the left of the 3the 0 t the left of the decimal point
- 9. Multiple ChoiceWhat is the temperature -34oC expressed in kelvins?139 K239 K339 K207 K
- 10. Multiple ChoiceWhich temperature scale has no negative temperatures?JouleFahrenheitKelvinCelsius
- 11. Multiple ChoiceThe weight of an object _____.depends on its locationis always the sameis not affected by gravityis the same as its mass
- 12. Multiple ChoiceWhat is the SI unit of mass?joulecandelaliterkilogram
- 13. Multiple ChoiceWhat is the result of adding 2.5 x 103 and 3.5 x 102?2.9 x 1026.0 x 1032.9 x 1036.0 x 105
- 14. Multiple ChoiceIf the temperature changes by 100 K, by how much does it change in oC?0oC100oC37oC273oC
- 15. Multiple ChoiceDensity is found by dividing _____.area by massmass by areamass by volumevolume by mass
- 16. Multiple ChoiceA train travels at a speed of 30 miles per hour. If 1 mile = 1.6 kilometers, how fast is the train traveling in kilometers per minute?0.6 km/min0.4 km/min0.8 km/min1.0 km/min
- 17. Multiple ChoiceHow many significant figures are in the measurement 811.40 grams?twothreefourfive
- 18. Multiple ChoiceExpress the sum of 1111 km and 222 km using the correct number of significant figures.1333.0 km1300 km1333 km1330 km
- 19. Multiple ChoiceIf the temperature of a piece of steel decreases, what happens to its density?The density decreasesDensity 1st increase, then decreasesThe density increasesThe density does not change
- 20. Multiple ChoiceWhich of the following mass units is the largest?dgcgngmg
- 21. Multiple ChoiceExpress the product of 2.2 mm and 5.00 mm using the correct number of significant digits.11.0 mm211 mm211.00 mm210 mm2
- 22. Multiple ChoiceWhat is the temperature of absolute zero measured in oC?-273oC-73oC-173oC-373oC
- 23. Multiple ChoiceThe diameter of a carbon atom is 0.000 000 000 154 m. What is this number expressed in scientific notation?1.54 x 10-101.54 x 10101.54 x 10-121.54 x 1012
- 24. Multiple ChoiceWhich of the following volumes is the smallest?one deciliterone microliterone literone milliliter
- 25. Multiple ChoiceWhat is the volume of 45.6 g of silver if the density of silver is 10.5 g/mL?479 mL4.34 mL0.23 mLnone of the above
- 26. Multiple ChoiceWhich of the following measurements (of different masses) is the most accurate?3.122 22 g3.100 00 g3.1000 gCannot be determined
- 27. Multiple ChoiceWhat is the volume of a salt crystal measuring 2.44 x 10-2 m by 1.4 x 10-3 m by 8.4 x 10-3 m?2.9 x 10-4 m32.9 x 10-5 m32.9 x 10-7 m32.9 x 10-6 m3
- 28. Multiple ChoiceHow many significant figures are in the measurement 0.003 4 kg?This cannot be determinedtwofourfive
- 29. Multiple ChoiceIf a liter of water is heated from 20oC to 50oC, what happens to its volume?The volume decreasesVol. first increases, then decreasesThe volume increasesVol. first decreases, then increases
- 30. Multiple ChoiceExpress the sum of 7.68 m and 5.0 m using the correct number of significant figures.12.7 m10 m13 m12.68 m
- 31. Multiple ChoiceWhat is the measurement 1042 L rounded off to two significant figures?1.0 x 103 L1050 L1.1 x 103 L1040 L
- 32. Multiple ChoiceExpress the product of 4.0 x 10-2 m and 8.1 x 102 m using the correct number of significant figures.3.24 x 101 m23 x 101 m23.2 x 101 m23.0 x 101 m2
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