Intermolecular forces
Monosaccharides are simple sugars that cannot be broken down into smaller sugar units, whereas polysaccharides are complex carbohydrates formed by linking multiple monosaccharide units. You can distinguish between the two by analyzing the molecular structure of the substance and looking for the presence of multiple sugar units in a chain for polysaccharides.
That's a very good question and there are arguments for both. I would class it more as a simple molecular substance because a sample will contain many separate molecules, with forces other than covalent bonds between them. A giant covalent structure like diamond is wholly held together by covalent bonds.
A general rule doesn't exist.
Substances that usually contain covalent bonds have a simple molecular structure. Examples include elements like oxygen and compounds like methane. Giant molecular structures are typically found in substances with strong covalent bonds, such as diamond and quartz.
it is a simple structure
simple enzyme molecular structure
They never can! elements can never ever be broken down!
Hydrochloric acid is a simple molecular structure composed of hydrogen and chlorine atoms. It is not a giant structure like a crystal lattice or a polymer.
Water has a simple molecular structure because it consists of two hydrogen atoms covalently bonded to one oxygen atom. This structure forms a bent shape due to the arrangement of the atoms and the lone pairs of electrons on the oxygen atom. The small size of the water molecule and its simple composition contribute to its simple molecular structure.
Magnesium (Mg) is a simple substance, classified as a metal. In its elemental form, it exists as a solid with a metallic lattice structure, consisting of individual magnesium atoms bonded together. Unlike molecular substances, which are made up of discrete molecules, magnesium does not form molecules but rather exists as a continuous array of atoms in a metallic bond.
The giant structure involve an enormous number of atoms.
Sand has a giant molecular structure. It is mainly made of a mineral called quartz, which is silicon oxide (SiO2).