G4 SCIENCE PROJECT Temperature vs. Surface Tension of Distilled Water Kevin Yang| Sehoon Joo| Alan Shen

RESEARCH QUESTION AND VARIABLES What is the effect of temperature on the surface tension of distilled water measured by capillary action? VariablesUnitsDescriptions IndependentTemperature°CControlled by Bunsen burner or ice bath DependentSurface TensionmN/mMeasured by capillary action Control Amount of Waterml300ml of water of used for each trial Source of WaterN/AWatson’s Distilled Water was used Temperature of Surrounding °CKept constant by air conditioning

PROJECT OVERVIEW

RAW DATA

ANALYZED DATA

Average Slope≈-0.16

CONCLUSION As the temperature increases, the surface tension of water decreases by 0.16 mN/m per degree rise in temperature