There are two concepts to address to answer this question: polarity and density. First, water is a polar molecule which means that one end (the oxygen end) has a slight negative charge and the other end (where the hydrogens are) has a slight positive charge. This is because oxygen is more electronegative and pulls the electrons closer to it than the hydrogens. As a lipid, butter is nonpolar and has an equal charge throughout the... There are two concepts to address to answer this question: polarity and density. First, water is a polar molecule which means that one end (the oxygen end) has a slight negative charge and the other end (where the hydrogens are) has a slight positive charge. This is because oxygen is more electronegative and pulls the electrons closer to it than the hydrogens. As a lipid, butter is nonpolar and has an equal charge throughout the molecule. As a rule in chemistry, polar and nonpolar molecules do not mix, which explains why the butter stays together and will no...