AP BIOLOGY

Detailed explanation-1: -As the sucrose dissolves, the molecules become completely surrounded by water molecules and move throughout the water. It is the polar nature of water as well as the polar nature of sucrose that explains why sugar dissolves in water.

Detailed explanation-2: -The sucrose molecules are attracted to one another by positive and negative polar areas. The polar water molecules attract the oppositely charged polar areas of the sucrose molecules and pull them away, resulting in dissolving.

Detailed explanation-3: -Both sugar and water are made of polar molecules. That means each molecule has positively and negatively charged parts.

Detailed explanation-4: -Substances composed of small polar molecules, such as acetone and ethanol, are usually soluble in water.