Watch this slideshare powerpoint to review for the chapter 9 biology exam.

View this video to review the rules of significant figures and do practice problems.

This video clip is great if you need help calculating molar mass.

Physical Science, Chemistry and Biology students can use this video clip to learn how to draw Lewis Dot diagrams.

Chemistry students, please use this to help you understand moles and Avogadro’s number.

Physical science students, read Chapter 2, section 2 on Science Skills. This is similar content to chapter 1 of our book and will help you review for our exam.

Chemistry and Physical Science students can use this video clip to review the use of significant figures.

Physical Science, Chemistry and Biology students can use this video clip to review making conversions.

Physical Science students may view this video clip to help understand metric units.

Physical Students may watch this for information on making metric conversions.