Jay

Jay

Concentration of salt

Written by Ingmar Chen

we want to know if the change of concentration of salt effect the flow of electricity. we think it does because electricity need salt Variables __** Independent variables:concentration of salt Dependent variables: tempreture ; distance between two metal ; amount of water ; size of metals. time Procedure __** 1.Take one cup 2.take two of the same size metals. (aluminum, copper) 3.record the amount of water we pour in. 4.different amount of salt will put in each times. (10g, 15g, 20g,25g, 40g) 5.test the votage by using the multimeter.
 * __ Hypothesis __**
 * __
 * __

we will use wood to make the distance between two metals the same.
 * || Voltage ||  || curency ||
 * cupA(10g)salt || 0.55 ||  || 0.78 0.76after10sec. ||
 * cupB(15g)salt || 0.55 ||  || 1.50 1.29after10sec. ||
 * cupC(20g)salt || 0.56 ||  || 1.93 1.82after10sec. ||
 * cupD(25g)salt || 0.56 ||  || 1.8 1.7after10sec. ||
 * cupE(40g)salt || 0.57 ||  || 2.54 2.41after10sec. ||