Noah+Belsly+and+Samuel+Joseph+Lee

=Conductivity of Electricity =

=Problem: = Which of our three liquids (lemon juice, water, salt water) will conduct electricity?

=Background: =  Electrical conductivity is the measure of a material's ability to accommodate the transport of an electric charge. It is the ratio of the current density to the electric field strength. Electrical conductivity is a very useful property since values are affected by such things as a substances chemical composition and the stress state of crystalline structures. Therefore, electrical conductivity information can be used for measuring the purity of water, sorting materials, checking for proper heat treatment of metals, and inspecting for heat damage in some materials. There are very few ions in water so it does not conduct electricity very well. When table salt is dissolved in water, the solution conducts very well, because the solution contains ions. You will not find ions in all substances, which is why we are conducting three of our own liquids. Some are mode of uncharged particles called molecules. Sugar is such a substance. When sugar is dissolved in water, the solution does not conduct electricity, because there are no ions in the solution. Our controlled variable is water. The dependent variable in our experiment is the amount of electricity in which we conduct with. While our independent variable is Salt Water and Lemon juice.

=Hypothesis: = If we conduct electricity with lemon juice, water, and salt water, then salt water will conduct because of the electric ions it contains.

=Materials: = (Overall estimate $10)
 * One container of salt
 * One container of lemon juice
 * Ordinary tap water
 * power source
 * 2 Batteries
 * 3 copper wires (red and black)
 * 1 light bulb (bulb holder and light itself)
 * scissors

=Procedure: = 1.) Tie one wire to one side of the battery connected to one side of the bulb 2.) Tie one wire to the other side of the bulb so that the other side of the wire is unconnected 3.) Tie one side to the battery so that one side is unconnected 4.) place both unconnected sides of the wires in each liquid individually 5.) Check to see if light turns on 6) Record data

= May want to get a longer procedure jake sievers = =Bibliography: =

"How To Test Which Solids And Liquids Conduct Electrical Current The Best." //Essortment //. N.p., n.d. Web. 24 Oct. 2013.

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"HOW TO MAKE A SIMPLE CIRCUIT." //YouTube //. YouTube, 02 July 2009. Web. 24 Oct. 2013.

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<span style="background-color: #ffffff; font-family: 'Times New Roman',Times,serif; font-size: 16px;">"Electrical Properties." //<span style="background-color: #ffffff; font-family: 'Times New Roman',Times,serif; font-size: 16px;">Electrical Properties //<span style="background-color: #ffffff; font-family: 'Times New Roman',Times,serif; font-size: 16px;">. N.p., n.d. Web. 24 Oct. 2013.

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