Love is in the air at in preschool and we’ve begun getting ready for Valentine’s Day by mixing up some Love Potion. This Valentine’s science activity is a fun way to learn about density and viscosity.I explained that the thick corn syrup was really dense, meaning that if we had the same amount  (volume) of each of the liquids, the corn syrup would weigh the most.  The liquid with the most mass per volume has the highest density.  This dense liquid stays at the bottom while the least dense alcohol stays at the top. All liquids stay separate because they have slightly different densities.  Some liquids were slow to pour, others poured faster showing the children the different viscosity properties of each liquid we used - corn syrup, water, rubbing alcohol, while milk, vinegar and dish liquid.