In table below, there are descriptions of an experiment on samples of three different chemical compounds. Decide whether the compound is ionic or molecular, if you can. Compound Description Ionic or Molecular
1 Compound 1 is a light gray solid made of overlapping
hexagonal crystals. When heated gently it starts to soften
and develop an unpleasant smell about 50 °C, above
room temperature.
2 Compound 2 is a dull white smooth solid which does not
conduct electricity. Applying an ordinary laboratory burner
to the material only makes the substance hot, it does not
otherwise change. In fact, the substance can't be melted
or even softed by any ordinary laboratory equipment.
3 Compound 3 is a clear liquid with a strong pleasantly
fruity smell. If cooled it freezes at about -10 0C. In the
solid state it does not conduct electricity.

Compound 1 is a molecular compound

Compound 2 is an ionic compound

Compound 3 is a molecular compound

Explanation:

Let us review the properties of ionic and molecular compounds.

A molecular compound has a low melting and boiling point. This is as a result of weak intermolecular forces. Also, molecular compounds do not conduct electricity both in solid and liquid state because they are composed of molecules and not ions.

On the other hand, ionic substances have very high melting and boiling points. They are very strong solids that often have a dull appearance and do not conduct electricity in the solid state.

Compounds 1 and 3 have the properties of molecular substances hence they are classified as such. Compound 2 displayed the properties of an ionic substance hence it is classified as such.

2fe + 3h2so4 -> fe2(so4)3 + 3h2

it is necessary to balance equations in order to get the proper amount of reactants as well as products in order not to make a miscalculation.

you cannot change the subscripts as that would change the substance itself. for instance, diatomic elements such as h2 only have the subscript two when a gas. another example would be so4, if you were to change the subscript, the element would no longer be sulfate.

we change the coefficients instead as that only changes the number of molecules rather than the substance itself.

hope this !