Question

What are four common characteristics of all organic molecules?

Answer 1

Hint : We know that these atoms' ability to attach to one another allows for the creation of innumerable compounds conducive to life. All organisms need four types of organic molecules; nucleic acids, proteins, carbohydrates and lipids. Life cannot exist if any of these molecules are missing.

Complete Step By Step Answer:
To simplify and to systematize the study of organic chemistry, all the organic compounds have been grouped into families called homologous series. In other words, a family or group of structurally similar compounds all the members of which have the same functional group, show a gradation in physical and similarity in chemical properties.
The four common characteristics of all organic molecules:
They all contain carbon: Organic compounds are compounds that contain carbon bonded with other elements, such as hydrogen, nitrogen, sulfur, and more.
Most of them are flammable: One group of organic compounds, the hydrocarbons, are one of the reactants for hydrocarbon combustion, and therefore are flammable.
They are all soluble in non-polar solvents: Since organic compounds are generally non-polar, they are not going to be soluble in water which is polar. The non-polar molecules of organic compounds are attracted to other non-polar molecules, so they will be soluble in non-polar solvents.
They are most, if not all, covalently bonded molecules: Carbon has four valence electrons to share with, so it is very easy for other elements to form covalent bonds with it. With the addition of hydrogen which has one valence electron, millions and millions of different compounds can form.

Note :
Remember that the physical properties such as density, boiling point, the melting point of the members of a homologous series show a regular gradation with a rise in molecular mass. When compound is formed energy like heat, light or electricity is either needed or produced.