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MERLOT II


    

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5 exemplary web sites that can be used in teaching high school chemistry

by Amber Aslam
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1. http://www.abpischools.org.uk/activescience/module5/game.html   This is an interactive periodic table game where an elements electronic configuration is given and the player has to correctly place it on the table accordingly. This game would help high school chemistry students connect how the elements are arranged on the periodic table according to electron configurations. Also, students will learn the patterns of how elements are arranged in periods and groups. This will also familiarize students with the position of well-known elements on the periodic table.  

2. http://www.harcourtschool.com/activity/acids/   This is an online laboratory simulation of testing different substances to see where they lie on the pH scale. Universal indicator paper is displayed across the top of the screen labeled with the pH scale and corresponding indicator color. Students will pick an unknown test tube and test it with the paper to determine which substance it is based on the color the paper turns (which tells them the solution’s pH). This is a great activity to do with high school chemistry students because it allows them to experience testing the pH of strong acids and bases safely without actually coming into contact with hazardous substances.  

3. http://www.chem.ufl.edu/~itl/2045/MH_sims/gas_sim_try1.html   This website allows chemistry students to explore the ideal gas law equation. Students can vary each of the variables in the equation, one at a time, and see how it affects the gases’ pressure mathematically, graphically and physically. For example, students can increase the temperature of the gas and see that it increases the pressure of the gas. The simulated pressure probe shows the pressure of the gas increasing as temperature is increasing. The numerical values for pressure and temperature change within the ideal gas law equation as well, showing how they are proportionally related. This website will express the ideal gas law equation in a physical sense so students may be able to take a concept that is abstract and visualize it.  

4.http://content.blackgold.ca/ict/Division4/Science/Div.%204/Voltaic%20Cells/Voltaic.htm   This interactive animation of voltaic cells can be used to teach a lesson on the design and operation of a functioning voltaic cell. Students can pick which metals to attach to the anode and cathode and determine the metal’s corresponding solution. They test their setup by turning on the voltmeter to see if the cell is generating any electricity. Students can test different combinations of metals to see which produce the greatest cell potential.  

5. http://www.pbs.org/wgbh/nova/physics/states-of-matter.html   I would use this website as a visual aid in introducing the states of matter. This website allows you to vary the pressure and temperature of a substance and see the effect on its state of matter and motion of molecules. Students will be able to observe how water can change from a solid state to liquid by not only changing temperature, but also pressure. They will also be able to observe the change in the motion of molecules as a substance transitions through the three different states of matter.

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