Watch the video:
https://www.khanacademy.org/science/organic-chemistry/gen-chemreview/electronegativity-polarity/v/intermolecular-forces-and-molecular-bonds
Define and give example of:
Intramolecular forces-
Intermolecular forces-
Describe 3 types of INTERMOLECULAR FORCES
LONDON DISPERSION
FORCES
DIPOLE- DIPOLE
FORCES
HYDROGEN BONDS
Station 1: Viscosity of Honey
1. What is the definition of viscosity?
2. What factors influence viscosity of a liquid?
3. Try to pour the cold honey and the warm honey at the same time. Which one pours
easier?
4. Based on your observations in question 3, which one is more viscous?
Station 2: Drops of Water on a Penny
1. Using the plastic pipette, add drops of water to the surface of a penny. How many drops
were you able to fit before it spilled over?
2. Sketch what your penny looked like with the drops of water on it.
3. What property of water is shown here? Define it.
Station 3: Water in a Jar
1. What do you think will happen when the jar of water is flipped upside down?
2. What actually happened?
3. How can you explain the results?
Station 4: Capillary Tubes
1. Contrast cohesion and adhesion.
2. In which tube is the water level the highest?
3. Explain why the water levels are different based on the size of each tube.
Station 5: Static electricity
1. When an object with static electricity is put near a stream of liquid, they can interact.
Consider water and mineral oil. Water is a very polar molecule that forms hydrogen
bonds and mineral oil is a non-polar molecule with very weak attractive forces. Which
substance do you think will be most affected by the presence of static electricity
(provided by the balloon)?
2. Why does polarity affect the interactions with an object containing static electricity?
Think about what you know about electrons’ role in electricity.