Student #: ________
PRACTICE Exam 1
Block:
________
Chemistry I – Mr. Patel
Name ___________________________________________________
Date ______________________
Please read each question carefully and provide the answer on the Response Sheet. Do NOT write on this
paper. Put your name, date, and block on the Response Sheet. All work must be shown for short answer
problems to receive ANY credit for that problem. Make sure your writing is easy to read.
Provide the name or symbol (whichever is not given) for the elements below.
1. S
2. Br
3. Cu
4. Zn
5. N
6. Potassium
7. Krypton
8. Gold
9. Silicon
10. Tin
11. H
12. Be
13. P
14. Mg
15. Ni
16. Calcium
17. Lithium
18. Lead
19. Silver
20. Carbon
21. What are the five branches of chemistry?
22. How many significant figures are in:
a. 12.3050
b. 9.300
c. 850
d. 309
e. 0.000045
f. 0.03280
23. What is the sum or difference that s rounded correctly?
a. 2.35 + 1.9
c. 2.3 - 12
b. 35.02 – 2.1
d. 980.056 +10.32
24. What is the product or quotient with correct significant figures?
a. 2.00 / 3.2
c. 7500 x 0.0012
b. 803 x 90
d. 35498 / 1.23
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25. Write in scientific notation:
a. 12350
b. 0.000750
c. 0.00679
d. 450000
26. ___________ is anything that has mass and occupies space.
a. Chemistry
b. Gravity
c. Matter
d. Force
27. ___________ is the study of the composition of matter and the changes it undergoes.
a. Chemistry
b. Biology
c. Matter
d. Physics
28. ___________ is the Father of Modern Chemistry.
a. Mendel
b.
c. Martin
d.
Patel
Lavoisier
29. ___________ is how close the measurements are to one another.
a. Accuracy
b. Data
c. Precision
d. Correctness
30. Consider the following data: 22.3g, 22.7g, 22.1g, 23.4g. True value = 24.0g.
a. Is the data measurement precise?
b. Is the data measurement accurate?
31. List three properties of a solid. List three properties of a liquid. List three properties of a
gas.
32. Draw a picture of a general solid, liquid, and gas.
33. What is the boiling point of water?
34. What is the transition between liquid to gas? Is this endothermic or exothermic?
35. What is the transition between solid to gas? Is this endothermic or exothermic?
36. What is the transition of melting?
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37. A substance freezes at 20oC. What is the freezing point? What is the melting point?
38. Chemical bonds are ___________ forces. (intermolecular or intramolecular)
39. Forces within molecules are called ________ forces. (intermolecular or intramolecular)
40. Classify the following as a substance or mixture.
a. Iron
c. Muddy Water
b. Water
d. Brass
41. Classify the following as a compound, element, heterogeneous, or homogeneous.
a. NaCl
e. Pencil
b. Sweet Tea
f. Steel
c. Silicon
g. H2O
d. Beef Stew
h. Hydrogen
42. Classify the following as an extensive or intensive property.
a. Melting Point
e. Mass
b. Volume
f. Density
43. Define the following terms.
a. Extensive Property
b. Alloy
e. Compound
f. Chemical Change
44. Identify as a chemical change or physical change.
a. Burning
e. Cutting in half
b. Rotting
f. Mixing
c. Dissolving
g. Sublimation
45. Perform the following conversions.
a. 12.36 mg to g
b. 63.2 cm to m
c. 20 cL to kL
e. 980 kL to L
f. 37.5 km to cm
g. 12.3 g to kg
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46. Answer the following questions based on the phase diagram below.
a. What does the letter A represent?
b. What does the letter B represent?
c. What does the letter C represent?
d. At what temperature and pressure is the triple point?
e. What is the phase at 0oC and 200 atm?
f. What happens if I keep temperature constant at -30oC and I increase the
pressure from 1 atm to 6 atm?
47. Calculate the density of a solid with a volume of 769.589 cm3 and a mass of 235.1g.
48. Perform the following math calculation and round appropriately:
(67.3564)(1.359876)(0.003456)(12.234)
+ (12.3648 + 58.959 + 119.03 − 89.31)
(0.68773)
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