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EXPERIMENT 1 
INTERMOLECULAR FORCESOF ATTRACTION
OBJECTIVES: 
1. Compare some physical properties of water with 
those of other liquids 
2. Associate the difference in the properties of the 
liquids to the types and strength of intermolecular 
forces existing between molecules.
A. A comparison of liquids (reaction of test liquids to charged objects) 
Test Liquid Observations 
water The flows of water bends 
ethanol Nothing happen 
kerosene Nothing happen 
B. Surface tension ( appearance of liquids on the surface of waxed paper) 
Test Liquid Observations 
Water It’s absorb water and forms 
irregular shape. 
Kerosene The form of kerosene in a waxed 
paper is circular shape.
The blade test 
Test Liquid Observations 
Kerosene The blade sinks faster. 
Deteregent The blade sink gently. 
Water The blade floats on water. 
C. Ice and Liquids Water ( volume comparison of ice and liquid water). 
OBSERVATION 
Initial volume 
(mL) 
400 mL Us our observation to the water 
with ice that has been melted, 
Final Volume nothing changes to the volume. 
(mL) 
400 mL 
Volume 
difference (mL) 
0 mL
Questions 
 Using the results in Table 1.1, identify the IMFA 
present in water, ethanol and kerosene. 
-water is hydrogen bond, ethanol is dipole dipole, and 
kerosene is london dispersion.
Questions 
 Briefly explain your observations in part I. 
-The flow of the water bends while the ethanol and 
kerosene is nothing happened.
Questions 
 Why do liquids assume different shapes on the 
surface of the waxed of the waxed paper? 
-The water reacts faster than the kerosene.
Questions 
 Based on the results obtained in Part II on the 
blade test, what happens when the blade was 
placed on the surface of water? Kerosene? Why? 
-The blade floats in water because the horizontal blade 
has more area than vertical. While the blade sink in 
kerosene because there is not enough IMFA to carry 
out the blade to float.
Questions 
 What happens when the blade was placed on the 
detergent solution? What is the effect of the 
detergent on the IMFA of water? 
-It’s because the detergent is viscous w/c the blade sinks 
slow. IMFA affects the viscosity of the solution.
Questions 
 Explain why ice float on water. 
-because ice is less denser than liquid water so the ice 
float on water.
Questions 
 Compare the initial and final volumes in Part III. 
Account for any difference. 
-Well to our observation, the volume of the water remain 
the same.
Questions 
 Identify other properties of compounds that are 
affected by the strength of intermolecular forces. 
Discuss briefly. 
-IMFA affects the other properties of cmpound such as 
boiling point because the higher IMFA the harder it 
boils the compound.

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CHM023L - B06 Final Report Group 3 Experiment 1 (Intermolecular Forces Of Attraction)

  • 1. EXPERIMENT 1 INTERMOLECULAR FORCESOF ATTRACTION
  • 2. OBJECTIVES: 1. Compare some physical properties of water with those of other liquids 2. Associate the difference in the properties of the liquids to the types and strength of intermolecular forces existing between molecules.
  • 3. A. A comparison of liquids (reaction of test liquids to charged objects) Test Liquid Observations water The flows of water bends ethanol Nothing happen kerosene Nothing happen B. Surface tension ( appearance of liquids on the surface of waxed paper) Test Liquid Observations Water It’s absorb water and forms irregular shape. Kerosene The form of kerosene in a waxed paper is circular shape.
  • 4. The blade test Test Liquid Observations Kerosene The blade sinks faster. Deteregent The blade sink gently. Water The blade floats on water. C. Ice and Liquids Water ( volume comparison of ice and liquid water). OBSERVATION Initial volume (mL) 400 mL Us our observation to the water with ice that has been melted, Final Volume nothing changes to the volume. (mL) 400 mL Volume difference (mL) 0 mL
  • 5. Questions  Using the results in Table 1.1, identify the IMFA present in water, ethanol and kerosene. -water is hydrogen bond, ethanol is dipole dipole, and kerosene is london dispersion.
  • 6. Questions  Briefly explain your observations in part I. -The flow of the water bends while the ethanol and kerosene is nothing happened.
  • 7. Questions  Why do liquids assume different shapes on the surface of the waxed of the waxed paper? -The water reacts faster than the kerosene.
  • 8. Questions  Based on the results obtained in Part II on the blade test, what happens when the blade was placed on the surface of water? Kerosene? Why? -The blade floats in water because the horizontal blade has more area than vertical. While the blade sink in kerosene because there is not enough IMFA to carry out the blade to float.
  • 9. Questions  What happens when the blade was placed on the detergent solution? What is the effect of the detergent on the IMFA of water? -It’s because the detergent is viscous w/c the blade sinks slow. IMFA affects the viscosity of the solution.
  • 10. Questions  Explain why ice float on water. -because ice is less denser than liquid water so the ice float on water.
  • 11. Questions  Compare the initial and final volumes in Part III. Account for any difference. -Well to our observation, the volume of the water remain the same.
  • 12. Questions  Identify other properties of compounds that are affected by the strength of intermolecular forces. Discuss briefly. -IMFA affects the other properties of cmpound such as boiling point because the higher IMFA the harder it boils the compound.