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Measurement & Problem Solving Review

Kilo- 1,000. Hecto - 100. Deka - 10. Base Unit m, L, g,s. Deci - 0.1. Centi - 0.01. Milli - 0.001. Measurement & Problem Solving Review. Convert 865.3 g to dag. 86.53 dag.

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Measurement & Problem Solving Review

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  1. Kilo- 1,000 Hecto- 100 Deka- 10 Base Unit m, L, g,s Deci- 0.1 Centi- 0.01 Milli- 0.001 Measurement & Problem Solving Review

  2. Convert 865.3 g to dag • 86.53 dag

  3. _______________ measurement is a measurement that gives results in a definite form, usually in numbers and units • Quantitative

  4. Convert 6,250mL to L • 6.250 L

  5. __________ shows how close a series of measurements are to one another • Precision

  6. Convert 425.2 km to m • 425,200 m

  7. What formula is used to calculate percent error? Valueaccepted– Valueexperimental X 100 Valueaccepted

  8. What is the density formula? D = _M_ V

  9. What is the abbreviation of a dekagram? • dag

  10. _________ is a measure of linear distance • Length

  11. ______________ measurement is a measurement that gives descriptive, NONnumeric results • Qualitative

  12. _________ is a measure of the gravitational pull on matter • weight

  13. Convert 78.6 s to ms • 78,600 ms

  14. _______ is a measure of the amount of space occupied by a sample of matter • volume

  15. Write the following in scientific notation: 458,600,000 • 4.586 x 108

  16. The zinc was a solid, gray metal. What type of measurement is this (qualitative or quantitative)? • qualitative

  17. Describe the proper way to read a measurement from a graduated cylinder. • Eye level • Bottom of meniscus

  18. Write out the metric prefix conversion chart. Kilo- 1,000 Hecto- 100 Deka- 10 Base Unit m, L, g,s Deci- 0.1 Centi- 0.01 Milli- 0.001

  19. The curvature of a liquid in a container because of surface tension is known as the __________ • meniscus

  20. List 2 units that density could be expressed in. • Any mass/volume unit! • EX: g/mL, mg/L, g/cm3

  21. _____ is a measure of the quantity of matter in a sample • mass

  22. What piece of lab equipment is used to measure mass? • Scale/balance

  23. _________________ shows how close a measurement comes to the true or accepted value of what is measured • accuracy

  24. Suppose you wanted to find the volume of a penny. What would you do? • Water Displacement- fill a graduated cylinder with water. Record volume. Add penny. Record volume. Take the difference between the volumes and that would be the volume of the penny!

  25. What piece of lab equipment is used to measure volume accurately? • Graduated cylinder

  26. The zinc had a mass of 58.3g. What type of measurement is this (qualitative or quantitative)? • quantitative

  27. What is the abbreviation of a centiliter? • cL

  28. What is the abbreviation of a cubic hectometer? • hm3

  29. Aluminum has a mass of 13.5g and a volume of 5.25mL. Calculate the density of this piece of aluminum. D = _M_ V = __13.5g__ 5.25mL = 2.57g/mL

  30. Which unit is larger: centigram, milligram? • centigram

  31. Aluminum has a density of 2.669g/mL. Suppose a student measures the volume to be 3.2mL. Calculate the mass of this piece of aluminum. • M = DV • M = (2.669g/mL)(3.2mL) = 8.54g

  32. Which unit is larger: meter, decimeter? meter

  33. Convert 2.6 hg to mg • 260,000 mg

  34. Write the following in ordinary notation: 5.23 x 10-4 • 0.000523

  35. Write the following in ordinary notation: 6.49 x 10-2 • 0.0649

  36. Write the following in scientific notation: 0.0000365 • 3.65 x 10-5

  37. Which unit is larger: kilogram, milligram? • Kilogram

  38. Write the following in scientific notation: 8,642 x 108 • 8.642 x 1011

  39. A chemistry student mixes rubbing alcohol, water, and honey in a beaker. She noticed that the honey is at the bottom of the beaker, the water is in the middle and the rubbing alcohol is at the very top. Explain this observation in relation to the relative densities of rubbing alcohol, water, and honey. • Rubbing alcohol is less dense than water since it is on top of the water. • Honey is more dense than water since it is on the bottom of the beaker.

  40. Write the following in scientific notation: 0.0000065 • 6.5 x 10-6

  41. Write the following in ordinary notation: 1.57 x 106 • 1,570,000

  42. Which unit is larger: meter, hectometer? hectometer

  43. What is the abbreviation of a decigram? • dg

  44. Aluminum has a density of 2.669g/mL. Suppose a student measures the mass to be 14.3g. Calculate the volume of this piece of aluminum. V = _M_ D = __14.3g__ 2.669g/mL = 5.36 mL

  45. Ryan measured a piece of aluminum to be 12.21g. The mass of the aluminum was actually 12.989g. Calculate the percent error 12.12g-12.989g x 100 12.989g = 6.7%

  46. Convert 875.2 dL to daL • 8.752 daL

  47. A student measured the volume of an aluminum block three times and recorded the following results: 6.42cm3, 6.41 cm3, and 6.40 cm3. The actual volume of the aluminum was 12.5 cm3. Comment on the accuracy and precision of the data. • The student was precise – all 3 measurements are close to one another. • The student was NOT accurate- she is about 6 cm3 from the actual measurement of 12.5 cm3

  48. ________ is a property of matter representing the mass per unit volume • Density

  49. Write the following in ordinary notation: 4.85 x 103 • 4,850

  50. _________ is the modernized form of the metric system used by scientists • SI system

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