General Chemistry | Remote Labs and Simulation"

Growing Up Crystals

Adapted From Multiple Sources. Compiled Natalie Ulrich, (PhD) Many covalent and ionic compounds are solids at room temperature. Solids may exist as crystalline solids—that is, ordered arrays of atoms, ions, or molecules—or as amorphous solids, which have random or disordered arrangements of particles. There are several types of crystalline solids. In this lab, you’ll be creating…

Molar Mass Determination by Freezing Point Depression

At home Hands-on Experiments

From BeyondBenign.org and J. Chem. Ed., 82 (1), 2005, 116-119. Compiled Natalie Ulrich, (PhD) If you’ve ever made ice cream at home, you know the recipe calls for adding salt to ice to cool down the ingredients enough for the ice cream to actually freeze. What’s up with that? Or why do road crews add salt to roads in…

Synthesis of the copper pigment malachite: making tempera paint

At home Hands-on Experiments

Students synthesize the copper pigment malachite, then use the pigment to prepare egg tempera paint. Students explore "stoichiometry (excess reactants and yields), solubility, precipitation, and properties of emulsions" in this Journal of Chemical Education article by Sally D. Solomon, Susan A. Rutkowsky, Megan L. Mahon, and Erica M. Halpern. The first half of this experiment uses…

Print, Build and Use Your Own LED Photometer

At home Hands-on Experiments

Low cost instrumentation for at Home or In Lab Experiments for Chemistry and Biology Laboratories These are instructions and 3D print files to construct a visible photometer using low-cost electronics for a cost of approximately $10, which includes $6.50 for a multimeter. The documents below have been written so you can "cut and paste" the…

A Beginner’s Guide to Microsoft Excel Spreadsheets and Graphs

Skill-Building Exercises

Two tutorials on spreadsheets, equations, graphs and trendlines This post contains two Microsoft Excel tutorials. The first one shows some basics of Excel spreadsheets, such as equations and formatting. The second one shows how to make an x-y scatter plot and trendline on Microsoft Excel. Sample data is also provided so students can apply what they…