IMF Station Lab Experiment: Understanding Intermolecular Forces
Explore the fascinating world of intermolecular forces through the IMF Station Lab Experiment. From cohesion to adhesion, viscosity to evaporation rates, this lab provides hands-on learning about the interactions between molecules in different substances.
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Presentation Transcript
Chemistry Feb 12, 2020 P3 Challenge- Objective IMF Station Lab Agenda IMF Station Lab Experiment only!!! Polyatomic ion quiz When done you may start on the questions only for the lab Assignment: Complete the questions for the IMF Station Lab
Adhesive vs cohesive Cohesion refers to the forces of attraction within a substance. Adhesion refers to the forces of attraction between two different substances, usually a liquid and a solid. Another name for IMF Cohesive means things that are alike stick together. If adhesion is stronger than cohesion, then a liquid will spread out on a surface. If cohesion is stronger than adhesion, a liquid will bead up on a surface.
Intermolecular Station Lab Station 1 Examine viscosity of liquids with hydrogen bonding. Station 4 Compare evaporation rates of liquids Swirling and shaking to compare flasks A and B. Identify substances. Watching evaporation of single drops Identify substances F, G and H. Station 5 Compare evaporation rates of liquids Station 2 Compare states of substances with dispersion forces Comparing two kinds of wipes Identify substances C, D, and E. To create a moist napkin half , dunk into beaker of water, then wring out as best you can Station 3 Compare surface tension of liquids Station 6 Compare the solubility of polar and nonpolar substances in polar and nonpolar solvents Compare adhesion and cohesion of water and oil 2 colored solids tested in 3 solvents (DEMO)
Exit Slip - Homework Exit Slip: Reset all station equipment and clean up. What s Due? (Pending assignments to complete.) IMF lab write-up (no formal report) due in one week Friday What s Next? (How to prepare for the next day) Start studying for test
