Final answer:
Aqueous solutions are split into their ions in net ionic equations to accurately represent their dissociated state in solution, while precipitates remain intact as they do not dissociate. This simplifies the equation to show only the compounds and ions that actively participate in the reaction.
Step-by-step explanation:
When writing out net ionic equations, it is essential to split all aqueous solutions into their constituent ions because this accurately represents how these substances exist in solution. The specific components that should be kept together as a single entity are the precipitates that do not dissociate in water. Starting with a balanced molecular equation, all aquatic substances are expressed as their individual cations and anions carrying through any coefficients. Afterward, the spectator ions, those that do not participate in the reaction, are omitted to reveal the net ionic equation. The net ionic equation provides a more accurate depiction of the actual chemical change that is occurring in the reaction, showcasing only the ions and substances that engage in the chemical process.
When writing net ionic equations, all aqueous solutions should be split into their constituent ions in order to accurately represent the dissociation of the compounds in solution. This allows us to identify the individual ions that are involved in the chemical reaction. The specific component that should be kept together as a single entity is any solid precipitate that forms during the reaction.