This document is a completed write-up for Laboratory Three in Principles of Biology (BI 251) at Portland State University, focusing on the chemistry of water and biomolecules. It details a student’s responses to a virtual lab exercise concerning chemical bonds – specifically ionic and covalent bonding.
This assignment is intended for students enrolled in BI 251 to demonstrate their understanding of bond formation through interactive simulation and analysis. It’s typically completed after the lab session as a means of reinforcing concepts and assessing comprehension.
It’s important to note that this is a *completed* assignment; it serves as an example of how to approach and answer the questions posed by the virtual lab. It does not provide instruction on *how* to complete the lab, nor does it cover the broader theoretical background of chemical bonding beyond what’s directly addressed in the questions.
This document provides the student’s answers to questions regarding: identifying elements as metals or nonmetals, determining valence electrons, predicting bond types (ionic vs. covalent), describing electron transfer/sharing, and naming/formula writing for compounds like Sodium Fluoride, Calcium Chloride, Potassium Fluoride, Magnesium Chloride, Calcium Nitride, and Aluminum Sulfide. It also includes responses relating to diatomic molecules like fluorine and oxygen. This preview *does not* include the virtual lab link or the original, uncompleted assignment questions.
