Ingmar+Chen

Concentration of salt 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
 * __Hypothesis__**

Independent variables:concentration of salt Dependent variables: tempreture ; distance between two metal ; amount of water ; size of metals. time
 * __Variables__**

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 voltage by using the multimeter.
 * __Procedure__**

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. ||