How is a molecule different from a compound?

Answer 1

a molecule of an elemnt has only one element in it[ duh!!] like for eg. oxygen is O2 and hydrogen is H2.

a molecule of a compound has more than one element in it, for example water H2O, HCl , NaCl etc etc

Answer 2

There is no such term as "molecular element".

The substance belongs to a particular element if it is composed of atoms of one kind.

Compound is made up of atoms of different elements (kinds).

Answer 3

A molecule that is an element would be a molecule composed of atoms of just that element. There are eight elements that exist as diatomic molecules, nitrogen (N2), oxygen (O2), hydrogen (H2), fluorine (F2), chlorine (Cl2), bromine (Br2), iodine (I2), and astatine (At2). A molecule that is a compound is composed of atoms of different elements, such as water (H2O), carbon dioxide (CO2), and glucose (C6H12O6).

Answer 4

A molecule is an electrically neutral chemical unit including at least two atoms and held together by covalent chemical bonds only. A molecule is the smallest unit of a covalently bonded compound that has all the chemical properties of the compound. A visible or larger example of a compound contains many molecules, if the compound is covalent.

A compound is a pure chemical substance that contains at least two distinct types of atoms and has constant proportions between or among all its kinds of atoms. A compound can be held together by only covalent chemical bonds, by ionic bonds, or by a combination of the two kinds of bonds.

Examples: O2 can represent either a molecule or a substance that is an element, because it contains only one type of atoms, but is nevertheless a covalently bonded substance.

CsF (cesium fluoride) is a compound because it contains two kinds of atoms in constant proportions to one another, but because the bonding between these two types of atoms is purely ionic, it does not contain molecules. Instead, CsF represents a "formula unit", because it includes the smallest number of both kinds of atoms in the correct proportions.

Sodium nitrate (NaNO3) is an example of mixed bonding: The sodium atoms, in the form of positively charged cations, are held within it by ionic bonding only, but the nitrate anions are held together internally by covalent bonds, which define a polyatomic unit that is not a molecule because it is not electrically neutral and instead is called a polyatomic ion. These polyatomic anions are held within the compound by their mutual ionic attraction to the sodium cations.

Answer 5

An element is formed from the same type of atoms.
A molecule contain two or more elements associated by chemical bonds or sometimes the same elements (diatomic gases or some allotropes). A compound is equivalent to the first type of molecule.

Answer 6

Molecules of an element are composed all of the same atom. Compounds have different atoms.

Answer 7

Compounds have properties and molecules don't