Final answer:
To test for an ionic compound, you need to use a conductivity tester, water to dissolve the compound, a heat source to melt it, and balances to calculate the formula mass. The compound's chemical formula should consist of a metal cation and a nonmetal or include polyatomic ions.
Step-by-step explanation:
To test if a sample compound is ionic, you need to check for properties characteristic of ionic compounds. Ionic compounds are known to conduct electricity when dissolved in water or when melted, but not in their solid state. This is due to the dissociation into ions that are free to move in liquid form. You would typically need:
- A conductivity tester to check if the solution conducts electricity.
- Water to dissolve the compound, if it is soluble.
- A heat source to melt the compound if necessary.
- Balances to determine the formula mass by adding the atomic masses of the individual ions.
Additionally, the compound's chemical formula, which consists of a metal and a nonmetal or includes polyatomic ions, can aid in identifying if a compound is ionic. Signs that a formula represents an ionic compound include having a metal cation or a polyatomic ion present.