Download ABC mock final

Competency Test – Chemistry
Graphing:
1. Sketch a small graph depicting an inverse relationship. Pressure = x axis; Volume = y
axis
Precision and accuracy:
2. Give 3 numbers that are accurate. Use 3.45 as the true value
3. What is the difference between accuracy and precision?
Density and volume:
4.
A rectangular solid measures 6.3 cm in length, 6.0 cm in width, and 2.1 cm in height.
Calculate its volume in cubic centimeters.
5. Density is defined as mass per unit volume. If the mass of a solid is 32.40 grams, and the
volume is 12.5 mL, what is the density? (Show work)
6. What is the mass of a substance that has the density of 7.25 g/mL, and a volume of 64.0
mL?
Scientific Notation:
7. Write the following numbers in scientific notation:
12,000
123
0.0023
8. Write the expanded form of the following numbers:
1.3 x 10 –3
2.345 x 10 5
5.6 x 101
Significant figures:
9. Identify the number of significant figures in the following values:
1000 m
60.012 L
2.05000 sec
0.00310 g
240.045 cm
10. Solve the following problems in the correct number of significant figures:
36.24 cm x 8.32 cm =
9.780 g / 3.21 cm3 =
19.46 cm + 7.333 cm =
52.12 m – 5.244 m =
11. Metric:
.025 meters = ? millimeters
345 centimeters = ? meters
25520 mm = ? kilometers
23 kilometers = ? decimeters
34 dekameters = ? hectometers
12. Error :
The results from a density experiment that you and your lab partner did were
supposed to be 6.22 g/ cm3. You and your partner’s result was 7.09 g/cm3.
What is your:
a. error
b. % error
13. Unit conversions:
Use the following equivalents to solve the dimensional analysis problem:
1.5 Wiggets = 127 Biffs
3.0 Farthrows = 0.25 Nerd Types
6.0 Biffs = 2.0 Chemistrees
2.0 Nerd Types = 4. Chemistrees
3.0 Blatifuz Cranifers = 8.4 Xtrainious Younits
How many Farthrows are there in 18 wiggets?