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Chemistry 1A: Dr. Jeffrey A. Mack


Dates for the chem. 1A diagnostic placement exam for F2018 will be posted starting Late March.  Click (HERE) for more information.

Beginning for the fall of 2018 statistics courses will NO LONGER be accepted as satisfaction of the chem 1A course math prerequisites.
Students that do not meet the math requirements explicitly through their course work (see below) MUST take the ALEKS PPL placement exam  offered through the CSUS math department.

If you need to take the ALEKS PPL exam to enter chem 1A
please follow this link to register. The ALEKS PPL, like the chem. 1A placement exam WILL NOT be offered after classes have started.

IAD scores are no longer accepted as fulfillment of the chem. 1A math requirements.

The course prerequisites will be strictly enforced. They will not be exempted for any circumstances whatsoever. (So please do not ask)

Chem 1A/1E: All students who want to register for chem 1A or 1E must pass the chemistry diagnostic exam before instruction begins. The exam will not be offered after the semester begins. NO EXCEPTIONS!

It is most beneficial for students to take the exam as early as possible so that when their registration time comes they are ready to go as opposed to having to wait until the next diagnostic cycle.

  • The test can only be taken once per semester and your score is good for 2 semesters.
  • You must score a minimum of 35 (58%) or greater enroll in chem. 1A/1E.
  • The exam cannot be repeated for a better score during a  semester's registration period. If you score below 35 then you must wait until the next semester to retake the exam.
  • If your score is older than two semesters, you must re-take exam.
  • Scores will show in your My Sac State Student Center a few days after you take the exam.
  • If you do not meet the math pre-req's for chem 1A, you will also need to take the ALEKS PPL. (See below)
  • It is advised that you take your math placement test before you take the chem. diagnostic exam.

Please contact Dr. Crawford for more information about Chem. 1E.

Math Requirements

Diagnostic Exam

Textbook information

Knewton Online Homework


Chem. 1A Math Requirements:

IAD scores are no longer accepted as fulfillment of the chem. 1A math requirements.




The course prerequisites will be strictly enforced. They will not be exempted for any circumstances whatsoever. (So please do not ask)

Upcoming ALEKS placement Dates:
(Registration with the Math Department required):

The math department will have dates for the ALEKS PPL up on their web site.

The chem 1E math requirements are: in Math 30 or Math 30 eligible.

The chem 1A math requirements are as follows:

1. Have passed MATH 12 (formerly math 11) so that you are ready for the next level math class.
2. OR Have taken and passed or be concurrently enrolled in a math class where MATH 12 is prerequisite.
3. OR Have an ALEKS placement score of 61 or greater.
4. Concurrent enrollment in math 12 DOES NOT qualify.

You do not need to take the ALEKS PPL if you have passed math 12 (formerly math 11) or a class where math 12 is prerequisite.

Confirming Math Prerequisites:

Students may show transcripts OR their ALEKS PPL score of 61 or greater.

Student  transcripts or class schedules must show the following:

1. A passing score of C or better in an equivalent math 12 course from another institution.

2. OR Any math course where math 12 is a prerequisite such as math 26A/B, math 29 etc...

  • Stats courses do not meet the requirement.
  • Math 17 DOES NOT meet the requirements as math 10 is prerequisite
  • Math 24 DOES NOT meet the requirements as math 10 is prerequisite.

You do not need to take the ALEKS PPL if you have passed math 12 (formerly math 11) or a class where math 11 is prerequisite.

IAD scores are no longer accepted for the chem. 1A course math requirements.

Chem. 1A Diagnostic Placement Exam

The Chem. 1A Diagnostic exam will be offered during finals week and over the summer break:

Beginning this semester, the Department of Chemistry at CSUS will require that all students enrolled in chem. 1A have taken and met the minimum score on the diagnostic placement test prior to the beginning of classes.

Students that fail to take the test by one week before classes will be administratively dropped and their seats in the course will be filled by those with passing scores on the wait lists.

Please  follow this link to find out more information on the exam.

The exam has 60 questions broken into three parts:

I: Basic math skills needed for chemistry
II: General chemistry knowledge topics
III: Specific chemistry topics

All Students must take the exam to enter chem. 1A.

A minimum score of 35/60 (58.3%) is set at the 65th percentile of all students taking the exam.
This equates to a projected grade of D+/C- in chem. 1A.

Diagnostic exam FAQ's:

Can I take the exam more than one time?

No. Students may only take the exam one time per registration cycle.

I took the exam in a previous semester and scored over 35, do I need to take the exam again?

Passing exam scores are good for one year.

I took chem. 4 and passed with a C or better do I need to take the exam?

It is suggested that students that have taken chem. 4 take the exam, however  so long as you have a grade of C or better in chem. 4, your score will not affect your enrollment in chem. 1A.

I took another chemistry class at a different college, does that count as passing chem. 4?

No. CSUS does not accept grades from courses equivalent to chem. 4 from other schools.

I am repeating chem. 1A, do I need to take and pass the diagnostic, even if I passed it last semester?

Yes. If you failed to pass the course on your first attempt, then you need to show that you have the requisite preparation for your second attempt by passing the exam with a score of 35 or higher.

What if I don't take the exam before school starts, will I be dropped?

Yes you will. No exceptions.

Required Textbook Package and Additional Class Materials

Chem. 1A will be using "Chemistry a Molecular Approach", 4th ed. by Nivaldo J. Tro

Both sections will be using Knewton Alta for the online homework in F2018. I will send you information regarding Knewton Alta over the summer.

All lab and discussion materials will be available for free download on the course Canvas site when classes begin.

If you are a new student or have never used Canvas, please go through the student tutorials and registration information found here