In a normal battery; Copper and Zinc.
A substance that dissolves in solution to conduct an electrical current is an "electrolyte" or, less commonly, an "ionogen".
No.
An electrolyte
Sugar is a compound that dissolves in water but does not conduct electricity. When sugar dissolves in water, it forms a solution, but it does not dissociate into ions that can carry an electric current.
Pure water by itself is not much of an electrical conductor. You can increase the ability of water to conduct electricity by adding a substance such as a salt that dissolves in water, separating into positive and negative ions. The ions in the water are able to conduct/transfer electrons maintaining an electrical circuit through the water.
a solution will conduct electricity if there are free ions or free electrons in the solution.
To conduct a solubility test, add a small amount of the substance to a test tube of solvent (such as water) and observe whether it dissolves. If it dissolves, the substance is soluble; if it does not dissolve, the substance is insoluble in that solvent. Repeat the test with different solvents to determine the solubility characteristics of the substance.
Metal
The electrical conductivity of a solution can be determined by measuring the ability of the solution to conduct electricity. This can be done using a conductivity meter, which measures the electrical conductivity in units of siemens per meter (S/m). The higher the conductivity, the better the solution can conduct electricity.
Sugar (sucrose) is a material that dissolves in water but does not conduct electric current. Sugar molecules do not ionize in water, so the solution does not carry electric charge.
One way is to measure the electrical conductivity. Ionic substances conduct electricity in solution, while molecular substances typically do not. Another method is to perform a precipitation reaction; when an ionic substance is mixed with a specific reagent, a solid precipitate forms if the substance is present. Lastly, you can use spectroscopic techniques like infrared spectroscopy to analyze the bonding patterns in the substance, since molecular and ionic compounds have distinct infrared spectra.
A substance will conduct an electric current if it forms ions in solution. A solute that produces ions in solution is an Electrolyte. An Electrolytic Solution is a solution that conducts electricity.