Why does water become syrupy when you add sugar to it?

Answer 1

Since sugar consists of a lot of glucose and sucrose (which are both polar, hydrogen rich molecules), we begin to see excessive hydrogen bonding, which leads to the change in consistency.

Also, as we see more of the water being 'used up' to form polar bonds with the sucrose, other sucrose molecules are unable to be dissolved. This forms a cycle which results in undissolved sucrose forming a thicker solution.

Answer 2

have you ever bought glucose to use in foods? its a thick liquid substance, it's pretty much (not exactly) like a liquid form of sugar. glucose is seriously thick, and if a liquid version of sugar existed at room temperature, then it would be thick. this is why if you dissolve sugar into water it thickens it. (not the best explanation in the world sorry)

Answer 3

Adding sugar to water increases the concentration of solute particles in the solution, which affects the physical properties of the water. The sugar molecules disrupt the movement of water molecules, making it more viscous or syrupy. The increased interactions between sugar and water molecules slow down their movement, resulting in the thicker consistency.