Marshall Law, Chi King Li, John Lo, Stan Wu

How does the concentration of NaCl in a stream of water affect the deflection of the water by using a charged rod?

•VariablesDuring experiment

Ruler

(Salt) Water

Charged RodFur to Charge Rod

Paper

Burette

Retort Stands

Data Collection/discussion

Concentration of NaCl (±0.01g) trial 1 (±0.05 cm) trial 2 (±0.05cm) Average (±0.1 cm)

0.00 2.70 2.80 2.8

2.00 4.20 4.60 4.4

4.00 5.30 5.10 5.2

6.00 5.80 6.10 6.0

8.00 6.60 7.10 6.9

10.00 7.30 8.20 7.8

12.00 8.40 8.70 8.6

14.00 9.80 9.30 9.6

16.00 10.90 10.30 10.6

Analysis/interpretation

Conclusion & Evaluation

• Higher concentration of salt more deflection of water.

• Weaknesses/Limitations• Improvements