Exam 1 Practice Test
Supplemental Instruction
Iowa State University
Leader:
Course:
Instructor:
Date:
Natalie
Chem 163
Burke
1/30/14
1. Which of the following is written in 4 significant figures?
a. 1002.0
b. 1100
c. 1.03x104
d. 1021
2. A dilute solution of hydrochloric acid corresponds to?
a. Compound
b. Molecule
c. Homogenous Mixture
d. Heterogeneous Mixture
3. Which of the following contains only metalloids?
a. Al, Sb, Ge
b. B, Po, Al
c. Te, Po, Ge
d. Si, Al, B
4. Which of the following corresponds to an atom with a neutral net charge and 19
electrons?
a. Potassium
b. Chlorine
c. Calcium
d. Argon
5. Which of the following is the largest temperature?
a. 270 K
b. 12oC
c. 30oF
6. What is the correct mass of a single atom of Bromine?
a. 35 g
b. 35 amu
c. 80 g
d. 80 amu
7. During an experiment a solution undergoes a transformation from a blue liquid
solution to white crystals. This is an example of a
a. Physical Change
b. Chemical Change
c. Both
d. Neither
8. A compound displaces 32.0 mL when placed in water and has a density of 4.7
g/mL. What is the correct mass of the compound?
a. 150.4 g
b. 6.81 g
c. 150 g
d. 68 g
9. Silver corresponds to
a. Representative element
b. Halogen
c. Metalloid
d. Transitional metal
10. Which of the following particles are found in the nucleus of an atom? Circle all
that apply
a. Protons
b. Neutrons
c. Electrons
d. None
11. Assume that the mixture of the two substances in drawing (a) undergoes a
reaction. Which of the drawings (b), (c), or (d) represents a product mixture
consistent with the law of mass conservation? Circle the correct answer.
–––––>
12. Choose the following that only corresponds to chemical transformations.
a. Boiling water, striking a match, tearing paper
b. Burning wood, rusting of a nail, baking a cake
c. Slicing a pie, brewing coffee, baking cookies
d. Combustion of methane, freezing of benzoyl chloride, nitration of an azo
dye
13. Circle the correct atom, and what is the net charge of an atom with a mass of 106,
60 neutrons and 42 electrons?
a. Tc, 0
b. In, -4
c. Zr, +4
d. Pd, +4
14. Choose the cation
a. 13C
b. Fe2+
c. O2d. 3H
15. A car has a density of 5.02 x103 g/mL and a volume of 2.45x104mL. What is the
mass of the car in nanograms
a. 1.23x102
b. 1.23x10-3
c. 1.23x1017
d. 1.23x104
16. Which of the following is a pure substance?
a. Magnesium Ribbon
b. Fresh orange juice
c. Air
d. Aspirin
17. Li corresponds to
a. Alkyl group
b. Alkaline metal
c. Alkali metal
d. None
18. Which of the following is a chemical property of Hydrogen?
a. Colorless
b. Has a b.p. of -252.8oC
c. Is a gas under normal conditions
d. Forms a unique bond called a Hydrogen bond.
19. Sublimation refers to
a. A chemical transformation
b. A reaction of a solid and a gas
c. A transformation from a solid to a gas
d. Reactions occurring only the gas state
20. Which are isotopes?
a. Ca2+, Ca0
b. 17Cl, 16Cl
c. 24Mg, 26Mg
d. 76O, 70O
21. Fill in the table.
Element
Mass
Neutrons
Protons
Electrons
Charge
Os
Rb
72 amu
201 amu
26
32
+4
-2
+1
-3
22. Write the name of the halogen in period 2. ________________
23. Classify Calcium by group and period. ______________________________
24. Mendeleev grouped the _______________________ by order of _____________
_____________.
25. 14C and 12C are __________________.
26. Write the name of the noble gas in period 5. ______________
Solve the following problems using the GFU method and proper sig figs.
27. A diazonium salt has a density of 0.0034 g/cm3, a volume of 33 mL and a specific
heat of 2.9001 J/goC. When reacted the temperature changes from 34oC to 290 K.
What is the heat required for this reaction? Is the reaction exothermic or
endothermic? How many cals does this correspond to? (1 cal= 4.18 J)
28. A solution of aluminum chloride weighs 67 kg and releases 37 kJ when heated
450 K. What is the specific heat of aluminum chloride in J/ugoC?
(ug=microgram).
29. You drive your car up a hill that is measured 307 km3 high. How tall is the
mountain in ft3? (1m = 3.281ft)