A student observes a liquid substance in water which beads up on the surface of water and does not dissolve. This substance must be: A.) A protein
B.) A carbohydrate
C.) A lipid
D.) A nucleic acid

A lipid

Explanation:

Have you ever tried to mix oil with water? You'll notice it forms droplets or a layer on top, but will not mix with the water.

Lipids form an emulsion in water and will not dissolve. This is because they are insoluble in water.

Lipids are insoluble in water because they form long non-polar chains which are hydrophobic, meaning they repel water and will not mix with it.

water is a polar molecule. a chemical bond is a force of attraction between atoms or ions. bonds form when atoms share or transfer valence electrons. atoms form chemical bonds to achieve a full outer energy level, which is the most stable arrangement of electrons. so, false

explanation:

in h2o molecule, two water molecules are bonded by a hydrogen bond but the bond between two h - o bonds within a water molecule are covalent. the greater the electronegativity difference, the more ionic the bond is. bonds that are partly ionic are called polar covalent bonds. nonpolar covalent bonds, with equal sharing of the bond electrons, arise when the electronegativities of the two atoms are equal.

bru what tyep of qus is dis