What unique property of water allows this reptile to “walk on water”?
Build a Water Molecule
Build Molecules!
Why do oil and water not mix?
Have you ever wondered why oil and water don't mix?
Shake up the oil and water mixture and see if you can figure out which molecules are water and which molecules are oil.
Have you ever wondered why oil and water don't mix?
Shake up the oil and water mixture and see if you can figure out which molecules are water and which molecules are oil.
Intermolecular Attractions and Solubility
Polar and non-polar molecules
In the model, the gray molecules represent non-polar oil and the blue/red molecules represent the water, which has both positive (blue) and negative (red) charges. Drag them around and look for attractions between molecules.
Polar and non-polar molecules
In the model, the gray molecules represent non-polar oil and the blue/red molecules represent the water, which has both positive (blue) and negative (red) charges. Drag them around and look for attractions between molecules.
Some attractions are stronger than others
By now, you have figured out that all molecules are attracted to each other. But if that's true, then why don't water and oil stay mixed after you shake them up?
The answer lies in the strength of the attractions.
Use the model to determine the relative strength of attractions between different types of molecules.
By now, you have figured out that all molecules are attracted to each other. But if that's true, then why don't water and oil stay mixed after you shake them up?
The answer lies in the strength of the attractions.
Use the model to determine the relative strength of attractions between different types of molecules.