Sugar dissolves in water because both water and sugar are polar molecules. A polar molecule is a molecule that has a positive end and a negative end. The positive end of the water molecule is attracted to the negative end of the sugar molecule, and vice versa. This attraction is called a dipole-dipole interaction.

When sugar is added to water, the water molecules surround the sugar molecules and the dipole-dipole interactions between the water and sugar molecules break down the bonds between the sugar molecules. This allows the sugar molecules to disperse evenly throughout the water.

The amount of sugar that can dissolve in water depends on the temperature of the water. The warmer the water, the more sugar can dissolve. This is because the water molecules are moving faster at higher temperatures, which makes it easier for them to break down the bonds between the sugar molecules.

The solubility of sugar in water is also affected by the presence of other solutes. For example, salt can reduce the solubility of sugar in water. This is because the salt molecules compete with the water molecules for the sugar molecules.

I hope this explanation is helpful. Let me know if you have any other questions.

Here are some additional things to keep in mind:

• The sugar dissolves because the water molecules are attracted to the positive and negative ends of the sugar molecules.
• The sugar molecules are surrounded by water molecules, and the dipole-dipole interactions between the water and sugar molecules break down the bonds between the sugar molecules.
• The amount of sugar that can dissolve in water depends on the temperature of the water and the presence of other solutes.