Ions are
If the solution will conduct electricity it is ionic. Solutions made from molecules do not conduct electricity.
by the number of electrons in its outermost shell
A pure substance made of two or more elements is a compound.
compound
ionic lattice is made of ions & atoms
If an ionic substance were melted, it would become a liquid made of ions; in this case the label "ionic liquid" could be applied.
Density (or more properly Relative Density) is an elemental property. An object made from one or more elements will have a density related to the density of the elements.
Salt is made of crystals.
Any ionic substance that has been dissolved in water.
If the solution will conduct electricity it is ionic. Solutions made from molecules do not conduct electricity.
Malleable property describes the property of a substance such that it can be made into sheets by striking. Ductile property describes the property of a substance that it can be drawn into wires. For example: Aluminium, it is available in sheets and even in the form of wires.
An ionic bond.
A physical property can be observed without changing what the substance is made of. A chemical property can only be observed by altering a substance through a chemical change.
NaCl or Salt is an ionic compound made up of atoms. One of the properties of an ionic compound is that it can dissolve in water and split into separate ions.
Solvent Property
there is no property that can be observed without somehow changing the identity of the object due to Heisenberg's Uncertainty Principle.
The ability to combine with another substance is a chemical change. This is because once the substance is made it can not be taken out.