Chem 100 Study Guide

Form A
Chemistry 100
Introduction to General Chemistry
Fall Semester, 2010
Exam One, 150 points
On this page print your name, your lab section number, and the name of your TA. Also sign this test booklet.
Name________________________________Lab section____________TA___________
Signature________________________________________________________________
The exam consists of 21 problems and one extra credit problem.
Partial credit is given only for work that is legible and logically and clearly presented.
Please include all set-ups, units, and unit cancellations. If you erase, do so completely, partial or unclear erasures may be graded as incorrect. You may use a nonprogrammable calculator on this test. A copy of the Periodic Table of Elements is provided on the last page.
For full credit give numerical answers in scientific notation and use the appropriate number of significant figures. Only answers written in the space provided will be graded.
The exam will last 50 minutes. You may not be able to finish the entire exam so choose the problems that you work on carefully. If you finish early, please leave quietly. Do not mark below this line.
Problems 1-14 ______/84
Problem 15 ______/10
Problem 16 ______/6
Problem 17 ______/8
Problem 18 ______/6
Problem 19 ______/8
Problem 20 ______/4
Problem 21 ______/24
Problem 22 ______/4
Total points______________________/150 (plus 4 possible extra credit points) volume of a cylinder = πr2h

Form A

1) Convert 127° F to Kelvin?
A) 95.0 K
B) 475 K
C) 53.8 K
D) 400 K
E) 326 K
2) In what ratio do the elements represented by the electron configurations
1s22s22p63s1 and 1s22s22p3 combine to form a compound?
A) 3:1 respectively
B) 2:3 respectively
C) 3:2 respectively
D) 1:4 respectively
E) 1:3 respectively
3) Which of the following elements is the most electronegative?
A) P
B) Cl
C) As
D) S
E) Te
4) A chemical property of a substance is a description of its
A) combustibility
B) odor