Week 1 Assignment – Part A
Practice with significant figures:
1. How many significant digits are in 43,000? 5
2. How many significant digits are in 3000.00? 6
3. How many significant digits are in 0.00032050? 5
4. How many significant digits are in 900? 3
5. How many significant digits are in 8.1100? 5
6. How many significant digits are in 0.00248? 3
Write these numbers in scientific notation:
7. 72,000 7.2 x 10^4
8. 89.0010 8.9001 x 10
9. 580,000,000 5.8 x 10^8
10. 0.00000002200 2.20 x 10^-8
11. 70,000 7.0 x 10^4
12. 0.0106 1.06 x 10 ^-2
13. What metric units are volume, mass and length measured in? Volume= liters (L) mass= grams
(g) length= meters (m)
Round the following numbers to 3 sig figs:
14. 655,412,673 655,000,000
15. 93,080 93,080
16. 0.080029 0.0800
17. 0.006498 0.00650
18. 829.12 829
19. 92.2322 92.2
Perform the following calculation, being sure to maintain the appropriate number of significant figures.
20. 24.5938 + 1.7 = 26.3
21. 619.4 - 42.1893 = 577.2
22. 539 x 7.2 = 3900
23. 211..4 = 5.51
, Name:__Haley Bockelman__ CHM 1020 W1
Week 1 Assignment – Part B
Identify the metric base unit for the following:
1. Length __meters(m)__
2. Volume _liters (L)__
3. Mass ___grams (g)___
Give the metric prefix for the following parts of the base units:
4. 0.001 __milli___
5. 0.000001 ___micro_____
6. 0.01 __centi____
7. 1000 _kilo_____
Write the correct abbreviation for each of the following units:
8. kilogram __kg__
9. meter __m__
10. liter __L__
11. milligram __mg__
12. millimeter __mm_
13. centimeter ___cm_
14. gram __g__
15. microgram _ug__
Which is larger? Circle the correct answer:
16. milligram or kilogram
17. centimeter or millimeter
18. milliliter or liter
Convert the following as indicated:
19. 4500 mL = ___4.5_______ L
20. 500 mg = ____0.5_____ g
21. 0.04 L = ___400_____mL
22. 800 mL = ____0.8____ L
23. 2 kg = ____2000__g
24. 2.5 g = ___2500___ mg
25. 40.5 cm = ____405__ mm
26. 3 mg = __3 x 10^7____ mcg
27. 1.2 g = __1200___ mg
28. 1.5 L = ___1500___mL
The standard metric unit of volume, the liter, is equal to how many cm3?
29. ____1,000___cm3