Does the density of a liquid affect refraction

[kotty]

Hey, I'm doing a assignment for school and the question is "does the density of a liquid affect refraction"

 

Im using a glass jar with various liquids and a laser point as the light although no matter what liquid i use the light stays straight all the way thru and out the otherside.

Am i doing something wrong or does the density not affect refraction

[swansont]

You can't shine it through the center. The light can't be perpendicular to the surface. What does snell's law of refraction tell you?

 

If you can find a container with flat sides (like a square) it might be easier, since then the location of the light hitting the container doesn't affect the angle, as long as you don't rotate the container.