What type of substance do these statements describe?

- it is a long chain.
- it contains carbon, hydrogen, and oxygen atoms.
- it has double bonds.
- it is insoluble in water.
- it is used for energy storage in living things.

carbohydrate
lipid
monosaccharide
protein

Answer : The correct option is, Lipid.

Explanation :

Carbohydrate : It is the most common type of organic compound. It contain only carbon (C), hydrogen (H), and oxygen (O) atoms.

It is built of small repeating units that form bonds with each other to make a larger

molecule. It is a long chain. It is also used for energy storage in living things.

Generally, all the carbohydrates are soluble in in water.

Lipid : Lipids are organic compounds which contain carbon, hydrogen, and oxygen atoms. It consist of fatty

acids, with or without additional molecules. Fatty acids are the organic molecules that have the general

formula , where 'n' ranges from 2 to 28 and always an even number. It is a long chain.

All the lipids are insoluble in polar solvent like water but are soluble in non-polar solvents. It is also used for energy storage in living things.

Monosaccharide : It is defined as the small repeating units (monomers). A monosaccharide contains carbon, hydrogen, and oxygen.

The general formula for a monosaccharide is, , where n can be any number greater than two. For

example, if n is 6, then the formula can be written as, . This is the formula of glucose. It is soluble in water.

Protein : It is an organic compound which contain carbon, hydrogen, oxygen, nitrogen, and in some

cases sulfur. They are made up of small molecules called amino acids.

All the structures are shown below.

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.