Given a scientific question and its correct answer, generate supporting facts for the answer. This supporting fact can be an explanation for the answer to the given question.

Question: What is a simple machine that consists of a rope wrapped around a grooved wheel? Answer: a pulley
A pulley is a simple machine that consists of a rope wrapped around a grooved wheel. Pulleys are generally used to lift a load.

Question: What does increasing a solute's temperature do? Answer: increases its solubility
If a solute is a solid or liquid, increasing the temperature increases its solubility. For example, more sugar can dissolve in hot water than in cold water.

Question: Due to the difference in the distribution of charge, water is what type of molecule? Answer: polar
Due to the difference in the distribution of charge, water is a polar molecule.