Success in chemistry courses begins with your elementary algebra skills.

**If you are planning to study biology, biochemistry/molecular biology, chemistry, or marine biology, and/or you intend to be on a health professions (e.g. medical, veterinarian, etc.) or pre-engineering track, you likely need to take a placement test before classes start.** Typically, students in any of the above tracks take Chemistry I (CHM 120) in the first semester of their first year of college. If you are currently enrolled in or plan to enroll in CHM 120 for Fall 2019, you are **required** to take the Math Skills Inventory (MSI) placement test to obtain and retain your seat in the course.

**MSI Testing**

**Items to bring:** laptop, pen/pencil, scientific (non-graphing) calculator

**Note:** You will be given a time limit to answer standardized elementary algebra, multiple choice questions on a computer with free use of scratch paper and the non-graphing calculator. Students with disabilities that require testing accommodations should contact Accessibility Services (access@rollins.edu). Any other questions regarding the details of the MSI test should be directed to msichem@rollins.edu.

**Unit conversions****(dimensional analysis)**: If you are a little familiar with chemistry from high school, practice conversions with the mole and Avogadro's number rather than things like feet to inches. Make sure you can do one-to-three dimensional conversions (e.g. converting milliliters into cubic liters).**Fractions and percentages****Scientific notation:**the way that scientists easily handle very large or very small numbers. For example, instead of writing 0.0000000034, we write 3.4 x 10^{-9}. You need to be completely proficient in scientific notation, including knowing how to add/subtract/multiply/divide numbers in this form and how exponents/roots are handled.**Logarithms**: you need to be able to use both "log" and "ln" (both bases), and be able to solve something like "9 = log x" for x.- You should be able to very easily
**solve a problem**like this:*PV=nRT Rearrange this equation to solve for "n".* - You should be able to graph
**simple linear functions**and understand y = mx + b. **Significant figures**: you need to be able to identify the number of significant figures in a number and perform basic mathematical operations while retaining the correct number of significant figures.

Though the MSI assumes absolutely no special test-directed preparation, if you would like to refresh your memory on algebra skills you may refer to this virtual math lab designed by West Texas A&M University.