The bond between the oxygen and hydrogen atoms (O–H bond) in sugar (sucrose) gives the oxygen a slight negative charge and the hydrogen a slight positive charge. Sucrose is a polar molecule. A nonpolar substance like mineral oil does not dissolve a polar substance like sucrose.

Re: When can a tetrahedral be non polar? If all four surrounding atoms are the same in a tetrahedral, then the molecule will always be nonpolar. The only exception is if for some reason one or more of the surrounding atoms had a lone pair.

In a tetrahedral molecule, there is one central atom bonded to four surrounding atoms with no lone electron pairs. The bonds form angles of 109.5°. Some examples of tetrahedral molecules include the ammonium ion, methane ion, and phosphate ion.

Polar solutes are substances which dissolve in polar solvents, forming polar bonds or hydrogen bonds. A solute will dissolve in a solvent if the solute-solvent forces of attraction are great enough to overcome the solute-solute and solvent-solvent forces of attraction.

The polar solute molecules are held together by strong dipole-dipole interactions and hydrogen bonds between the polar groups. The polar groups of the solute molecules can interact favorably with the polar solvent molecules, resulting in a large, negative enthalpy change for step 3 (ΔH3<0).

The chemical structure of vegetable oil is seen below: The long fatty acid chains mainly contain carbon- hydrogen bonds which have essentially no dipole moment. Therefore oil is non-polar.

Food coloring is a polar molecule so it WILL mix with the water.

While all three of these substances are considered to be nonpolar, carbon dioxide is slightly more polar than oxygen, which is slightly more polar than helium….