Name:
Metric Conversions, Sig Figs, and Density Quiz!
Metric- Metric Conversions
1.
2000 mg = _______________ g
2.
5.6 kg = _______________ g
3.
15 mm = ______________ cm
4.
1 km= _______________ m
5.
75 cm3 = ________________ L
6.
98.72 m = _______________ mm
7.
25,671 cm = ______________ m
8. Will a sheet that is 345 cm long cover a bed that is 3.25 meters long? Explain your
answer by showing work.
9. A paperclip is 4.7 cm long. If 75 paperclips were laid end to end, how many meters long
would the line be?
Significant Figures
How many significant figures in each number?
10. ______________ 72.01
11. ______________ 308
12. ______________ .079
13. ______________ 250,000
14. ______________ 15.1 x 104
15. ______________ 1.670 x 10-9
Name:
Rounding to 1, 2, or 3 significant figures
Numbers
387
Round to 1sf
16.
Round to 2sf
17.
Round to 3sf
18.
1.489
19.
20.
21.
.0781
22.
23.
24.
23,871
25.
26.
27.
Density
Density Calculations (answered with correct number of sig figs)
Write complete answer first (what shows up on calculator) THEN change to correct sig figs
YOU MUST SHOW WORK AND INCLUDE UNITS!
28. Find the unknown quantity:
d= 7g/cm3
V= 100 cm3
M= ?
Answer: ________
29. Find the unknown quantity:
d= ?
V= 876 cm3
M= 23 g
Answer: ________
30. Find the unknown quantity:
d= .5 g/cm3
V= ?
M= 13 g
Answer: ________
31. An object has a mass of 23.3 g and occupies a volume of 45.67 cm3. What is the density
of this object?
Name:
32. What is the volume of a 22.8 g sample of metal that is known to have a density of 9.145
g/cm3?
33. If the density of gold is 14.3 g/cm3, what is the mass of a sample of gold that occupies 88
cm3?
34. A block of titanium occupies a volume of 71.01 mL and weighs 22.2 g. What is its
density?
35. What volume would a 0.871 gram sample of helium occupy if the density of helium is
18.41g/cm3?
36. From their density values, decide whether each of the following substances will sink or
float when placed in the seawater, which has a density of 1.03 g/cm3
Object
Cork
Anchor
Spruce wood oar
Orange
Orange without peel
Density g/cm3
0.2-0.3
7.8
0.4
.84
1.16
Sink or Float?