As a specialist in the field of chemistry, I'd like to delve into the concept of electrical conductivity in solutions. Electrical conductivity in a solution is primarily determined by the presence of ions, which are charged particles that can move freely and carry an electric current. When a substance dissolves in water, it can either ionize, meaning it breaks down into its constituent ions, or it can remain as molecules without ionizing.

**Sugar, or sucrose, is a compound made up of glucose and fructose molecules linked together.** When sugar is dissolved in water, it does not ionize. Instead, it remains as sugar molecules dispersed throughout the water. Because there are no ions present in the solution, there are no charged particles available to move and carry an electric current. This lack of free-moving ions is why a sugar water solution does not conduct electricity.

In contrast, **some substances when dissolved in water do ionize**. For example, when table salt (sodium chloride) dissolves in water, it breaks down into its constituent ions, sodium (Na⁺) and chloride (Cl⁻). These ions are free to move in the solution and can carry an electric current, making the solution conductive.

The statement about ammonia is also interesting. Ammonia (NH₃) is a molecule that can react with water to form ions, but the extent and nature of this reaction can vary. When ammonia dissolves in water, it can form a small amount of ammonium (NH₄⁺) and hydroxide (OH⁻) ions through a process known as acid-base equilibrium. However, the concentration of these ions is typically quite low, and the solution's conductivity depends on several factors, including the concentration of ammonia and the pH of the solution.

It's important to note that not all molecular solutions are non-conductive. The conductivity also depends on the specific chemical interactions that occur when a substance dissolves in water. For instance, some molecular substances can undergo autoionization or can react with water to produce ions, which can then contribute to the solution's conductivity.

In summary, the electrical conductivity of a solution is determined by the presence and mobility of ions. A sugar water solution does not conduct electricity because sugar does not ionize in water, leaving no ions to carry a current. Other substances, like ammonia, can form ions when dissolved in water, but the degree to which they contribute to conductivity depends on various factors.

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When sugar is dissolved in water, the solution does not conduct electricity, because there are no ions in the solution. Some substances that are made of molecules form solutions that do conduct electricity. Ammonia is such a substance. When ammonia dissolves in water, it reacts with the water and forms a few ions.read more >>