What are some properties of molecular compounds?

Answer 1

Simple molecular structures like H2O and CO2 have the following properties:

1) Physical state: usually liquids and gases at room temperature due to weak intermolecular forces

2) Melting and boiling points: low (below 2000 C) melting and boiling points due to weak intermolecular forces

3) Electrical conductivity: cannot conduct electricity because there are no free electrons

4) Solubility: insoluble in water, but soluble in organic substances such as petrol

Macromolecular structures such as diamond and SiO2 have the following properties:

1) Physical state: hard solids at room temperature due to the many strong covalent bonds holding the atoms together

2) Melting and boiling points: high melting and boiling points due to the many strong covalent bonds that must be broken before the substance can change state

3) Electrical conductivity: cannot conduct electricity because there are no free electrons

4) Solubility: insoluble

Answer 2

Molecular compounds are built upon molecules that consist of more than one element such as water (H2O) or carbon dioxide (CO2). The common properties are low melting and boiling points, poor electrical and thermal conductivity, soft or brittle solid forms and low enthalpies of fusion and vaporization.

Answer 3

Molecular compounds have low melting points, they are relatively soft due to the week attraction between the molecules and they are always poor conductors even when at liquid state.

Answer 4

Molecular compounds have low melting and boiling points, and do not conduct electricity.

Answer 5

Molecular compounds, also known as covalent compounds, have relatively low melting and boiling points. Molecular compounds tend to be soft and flexible.

Answer 6

Two general properties of molecular compounds are lower melting and boiling points than ionic compounds.