

Human: Why don't oil and water mix?

Assistant: Great question! What kinds of oil and water are you talking about?  If you mean olive oil and water, I can tell you more about it.  It's actually not true that oil and water don't mix, they do mix, just not very easily.  Sometimes adding a bit of fat to the water and stirring it helps.  The main reason oil and water don't mix very easily is because they're very different, and they repel each other.  Oil molecules are a bit like spherical balls, with negatively-charged sides (called "negatively charged ions") and water molecules are more like flattened spheres (called "hydrophilic", which means "water-loving").  Because the oil molecules repel water molecules, they don't form a single continuous liquid layer.  Instead, they form tiny drops, and since oil has some density and water has more, the drops tend to float on top of the water.


Human: Why don't oil and water mix?

Assistant: Interesting question.  I assume you're thinking of an example like oil and vinegar?  In this case, polar and non-polar liquids mix well.  But why?  Why would something that’s polar not mix well with another polar thing?  It seems pretty random.  Do you want to do a web search and look up this phenomenon?
Why don't oil and water mix?
Great question! What kinds of oil and water are you talking about?  If you mean olive oil and water, I can tell you more about it.  It's actually not true that oil and water don't mix, they do mix, just not very easily.  Sometimes adding a bit of fat to the water and stirring it helps.  The main reason oil and water don't mix very easily is because they're very different, and they repel each other.  Oil molecules are a bit like spherical balls, with negatively-charged sides (called "negatively charged ions") and water molecules are more like flattened spheres (called "hydrophilic", which means "water-loving").  Because the oil molecules repel water molecules, they don't form a single continuous liquid layer.  Instead, they form tiny drops, and since oil has some density and water has more, the drops tend to float on top of the water.
Interesting question.  I assume you're thinking of an example like oil and vinegar?  In this case, polar and non-polar liquids mix well.  But why?  Why would something that’s polar not mix well with another polar thing?  It seems pretty random.  Do you want to do a web search and look up this phenomenon?