Exam 1

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Published on 31 Jan 2019
School
ASU
Department
Chemistry
Course
CHM 101
Professor
CHM 101 Practice Questions
1
CHM 101 Sample Exam Questions
1. You are responsible for the information on this page. Please read it carefully.
2. Print and code both your name and 10-digit affiliate ID on the scantron sheet. The affiliate ID is the
second sequence of numbers on your University ID card.
3. Use only a #2 pencil.
4. Do all calculations on the exam pages. Do not make any unnecessary marks on the answer sheet.
5. This exam consists of 25 multiple choice questions worth 4 points each and a periodic table. Make
sure you have them all.
6. Choose the best answer to each of the questions and answer it on the computer-graded answer sheet.
Read all responses before making a selection.
7. When you are finished, turn in your scantron in the stack that corresponds to your version. Your
scantron is color-coded in the upper right hand corner. You may keep your exam questions.
Potentially useful information:
1 inch = 2.54 cm
1 lb = 453.6 g
1 quart = 0.9464 L
4 quart = 1 gallon
32 fluid ounces = 1 quart
K = ºC + 273.15
Heat
energy
added
= Specific
heat
× Mass in grams × Change in
temperature
in Cº
1 cal = 4.184 J
1000 cal = 1 kcal = 1 Cal
8
3.0x10 m/s
c
v
c
λ
=
=
11 2 2
11 2 2
1atm = 760 torr =760 mmHg
( 0.08206 L atm/K mol)
PV P V
nT n T
PV nRT R
=
==
Activity Series
Li (Most Active)
K
Ba
Ca
Na
Mg
Al
Zn
Fe
Cd
Ni
Sn
Pb
H
Cu
Hg
Ag
Au (Least Active)
Solubility Info
All compounds containing any of the following are soluble:
Na+, K+, NH4
+, NO3
-
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CHM 101 Practice Questions
2
Problem 1.029
Chapter 1
1. Which of the following is considered a mixture?
A. Cl2 B. CO2 C. Na D. Copper-zinc alloy E. Both A and B are mixtures
2. Which of the following best describes what happens when water evaporates?
A. Water molecules undergo a chemical change in which hydrogen and oxygen molecules form.
B. Water molecules undergo a physical change in which hydrogen and oxygen molecules form.
C. Water molecules undergo a chemical change in which gaseous water vapor molecules form.
D. Water molecules undergo a physical change in which gaseous water vapor molecules form.
E. Water boiling does not involve physical or chemical changes.
3. A pharmaceutical chemist measured the melting point of an unknown compound in four trials. Her
data is listed below. Which of the following statements best describes her data?
Melting Point (°C)
95.29
95.30
95.31
92.99
A. Three melting points are accurate and one is not accurate.
B. Three melting points are precise.
C. The data is accurate.
D. All of the data is not accurate.
E. The average should have only one significant figure.
4. Which of the following represents a pure compound?
5. If the mass of a dog is 65-lb, what is the mass in units of kilograms? (1 lb = 453 g)
A. 29,000 kg D. 0.14 kg
B. 29 kg E. 140 kg
C. 0.290 kg
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CHM 101 Practice Questions
3
6. If the diameter of a cell is 9.0 x106 meter, its diameter can also be reported as _______.
A. 9.0 mm
B. 9.0 μm
C. 9.0 nm
D. 9.0 pm
E. 9.0 km
7. What is the density of a cubic solid that is 3.00 cm on each side and has a mass of 25.0 grams?
A. 0.926 g/cm3 B. 1.08 g/cm3 C. 2.78 g/cm3 D. 8.33 g/cm3 E. 27.0 g/cm3
8. Why is the density of gaseous CO2 less than that of solid CO2?
A. In the gaseous state, the CO2 molecules have a lower mass.
B. In the gaseous state, the CO2 molecules have a greater mass.
C. In the gaseous state, there is more space between the CO2 molecules.
D. In the gaseous state, there is less space between the CO2 molecules.
E. In the gaseous state, the CO2 molecules are bigger.
9. When 222 seconds is converted to minutes, how should the result be properly reported with the correct
number of significant figures?
A. 4 min B. 3.7 min C. 3.70 min D. 3.700 min E. 3.70x10-2 min
10. The density of gold is 19.3 g/mL. What is the mass of 0.0100 L of gold, in units of grams?
A. 1.93x10-6 g
B. 0.193 g
C. 1.93 g
D. 193 g
E. 1.93x104 g
11. Which of the following is the lowest possible temperature?
A. –273.15 °C
B. –273.15 K
C. 273.15 K
D. 0 °C
E. The is no lowest possible temperature
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Document Summary

You are responsible for the information on this page. Chm 101 sample exam questions: print and code both your name and 10-digit affiliate id on the scantron sheet. The affiliate id is the second sequence of numbers on your university id card: use only a #2 pencil, do all calculations on the exam pages. Do not make any unnecessary marks on the answer sheet: this exam consists of 25 multiple choice questions worth 4 points each and a periodic table. Make sure you have them all: choose the best answer to each of the questions and answer it on the computer-graded answer sheet. Read all responses before making a selection: when you are finished, turn in your scantron in the stack that corresponds to your version. Your scantron is color-coded in the upper right hand corner. 1000 cal = 1 kcal = 1 cal. All compounds containing any of the following are soluble: