Surface Tension Of Liquids Essay
UNIVERSITI TUNKU ABDUL RAHMAN
UNIT DESCRIPTION : Colloid and Surface Chemistry
NAME : YONG ZHI RHEN
ID : 1307297
YEAR & SEMESTER : YEAR 2 SEMESTER 3
PARTNER’S NAME : YONG LI YING, BERNARD HIEW
Practical group : P4
EXPERIMENT NO. : 1
EXPERIMENT TITLE: Surface tension of liquids
DATE : 13 /8 /2015
LECTURER : Dr. Yip Foo Win
Experiment 1
Title:
Surface Tension of Liquids
Objective:
To understand the basic concept of surface tension in liquids and how it affects the properties of liquids.
Introduction:
In this experiment, we are going to test and know the surface tension of few solutions which include water, low fat and full cream milk.
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Clean water was poured into a petri dish.
2. Powdered sulfur was dusted on the surface of clean water. The observation was recorded.
3. The surface of water was touched with a toothpick. Observation was recorded.
4. The tip of the toothpick was dipped in detergent. Surface of the water was touched and the toothpick was hold in place for a while. Observation was recorded.
Procedure B
1. Low-fat milk was poured into a petri dish.
2. A couple of drops of four differently colored food coloring were added. The drops were kept closed together in the centre of the petri dish. Observation was recorded.
3. The surface of the milk was touched with toothpick. Observation was recorded.
5. The tip of the toothpick was dipped in detergent. Surface of the milk was touched and the toothpick was hold in place for a while. Observation was recorded.
4. The process was repeated by replacing low-fat milk with full cream milk and later with water.
Results
The petri dish is filled with mixture of water and powder Beginning After detergent was dipped in
The petri dish is filled with full-cream milk and food
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