1. 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

2. Convert 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 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
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)?

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
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?

31. Aluminum has a density of 2. 669g/mL
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?

33. Convert 2.6 hg to mg
260,000 mg

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

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?

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

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?

43. What is the abbreviation of a decigram?dg

44. Aluminum has a density of 2. 669g/mL
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
Ryan measured a piece of aluminum to be 12.21g. The mass of the aluminum was actually g. Calculate the percent error
12.12g g x g = 6.7%

46. Convert dL to daL
8.752 daL

47. The student was precise – all 3 measurements are close to one another.
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