Measurements Review

1. Which of the following is NOT a metric measurement of volume? A. cc B. milliliter C. cm3 D. liter E. mL3

2. The measurement 24,000 g written in scientific notation is A. 24 g B. 24 x 103 g C. 2.4 x 103 g D. 2.4 x 10-3 g E. 2.4 x 104 g

3 . The measurement 0.005 m written in scientific notation is A. 5 m B. 5 x 10-3 m C. 5 x 10-2 m D. 5 x 10-4 m E. 5 x 103 m

4. The measured number in the following is A. 1 book B. 2 cars C. 4 flowers D. 5 rings E. 45 g

5. The number of significant figures in 105.4 m is… (type it in)

6. The number of significant figures in 0.000082 g is…

7. The calculator answer 5.78052 rounded to 2 sig figs is…

8. The calculator answer 3486.512 rounded to 3 sf is…

9) 16.0 g 8.0 ml A. 2 g/ml B. 2.0 g/ml C. 2.00 g/ml D. 0.2 g/ml E. 5.0 g/ml

10) 58.5 ml + 9.158 ml A. 67 ml B. 67.6 ml C. 67.7 ml D. 67.66 ml E. 67.658 ml

11) 2.5 kg x 3.12 m 4.6 s2 A) 0.54 kg m/s2 B) 7.8 kg m/s2 C) 0.85 kg m/s2 D) 1.7 kg m/s2 E) 1.69 kg m/s2

12) Which of these prefixes has the largest value? A. centi B. deci C. milli D. kilo E. micro

13. What is the decimal equivalent of the prefix centi-? B 0.01 C 0.1 D 10. E 100.

14. Which of the following is the smallest unit of measurement? A. gram B. milligram C. kilogram D. decigram E. centigram

15. Which volume is the largest? A. mL B. dL C. cm3 D. L E. kL

16. Which of the following is a conversion factor? A. 12 in B. 3 ft C. 20 m D. 1000 g = 1 kg E. 2 cm3

17. Which is a conversion factor that relates milliliters to liters? A. 1000 mL = 1 L B. 100 mL = 1 L C. 10 mL = 1 L D. 0.01 mL = 1 L E. 0.001 mL = 1 L

18. Which is a conversion factor for millimeters and centimeters? A. 1 mm = 1 cm B. 10 mm = 1 cm C. 100 cm = 1 mm D. 100 mm = 1 cm E. 10 cm = 1 mm

19) 294 mm is equal to A) 2940 m B) 29.4 m C) 2.94 m D) 0.294 m E) 0.0294 m

SKIP THIS. 20) 3 liquids have densities of 1. 15 g/mL, 0 SKIP THIS! 20) 3 liquids have densities of 1.15 g/mL, 0.79 g/mL, and 0.95 g/mL. When the liquids are poured into a graduated cylinder, which liquid would sit on the top layer? A) 1.15 B) 1.00 C) 0.95 D) 0.79 E) 0.16

21) There is always uncertainty when you measure an object 21) There is always uncertainty when you measure an object. Sig Figs tell… A. all certain digits plus an estimated digit B. all certain digits plus two estimated digits C. all certain digits only; estimated digits are never significant D. everything is estimated in chemistry

22) Which number(s) is/are estimated if you measured 88 22) Which number(s) is/are estimated if you measured 88.923 g of a substance? A. 2 & 3 B. 9,2,3 C. entire number D. 3

23. Convert 34.89 mm to meters K H D (m, L , g) d c m base

24. What is the density of copper if mass = 226 g and volume = 20.0 mL? Density = mass volume A. 11 g/mL B. 11.3 g/mL C. 11.30 g/mL D. 0.0885 g/mL E. 4500 g/mL

A student wants to know the volume of a piece of copper tubing A student wants to know the volume of a piece of copper tubing. She decides to use the water displacement method with a graduated cylinder borrowed from her chemistry class. 25. What is the volume of copper if the water level in the cylinder starts at 200.0 mL and rises to 220.0 mL?

26. What is the % error if you produce 226 26. What is the % error if you produce 226.0 g NaCl in a lab reaction, but the actual amount produced should be 230.0 g? Round to the nearest tenth of a percent.

Answers 1. E 2. E 3. B 4. E 5. 4 sf 6. 2 sf 7. 5.8 8. 3490 9. B 10. C D 12. D 13. B 14. B 15. E 16. D 17. A 18. B 19. D 20. SKIP 21. A 22. D 23. 0.03489 m 24. B 25. 20.0 mL 26. 1.7% ERROR