How can you tell if the compound is molecular?

Answer 1

An ionic compound is a pure substance that is formed from a metal and a nonmetal. It has a fairly high melting point and is a conductor of electricity when in a molten or aqueous state . A molecular compound, on the other hand, is a pure substance that is formed from nonmetals. It has a fairly low melting point, and cannot conduct electricity regardless of state. Another important difference between the two is that an ionic compound is a crystalline solid at standard ambient temperature and pressure (SATP), whereas a molecular compound can be in a solid, gas or liquid state at SATP.

Answer 2

A compound is molecular if it is composed of nonmetals. Molecular compounds are formed by sharing electrons between atoms to achieve stability, leading to the formation of molecules. In contrast, ionic compounds are comprised of ions held together by electrostatic forces of attraction.

Answer 3

by looking at the element for example if the element has a number in front of it.

Na2

(Sodium) --> diSodium

Mg2O3 --> Magnesium triOxide

Prefixes = 1-mono 2-di 3-tri 4-tetra 5-penta 6-hexa 7-hepta 8-octa 9-nona

10-deca

So remember, it's the number in front of the 2nd element.

Answer 4

COMPOUND HAS TWO THINGS, WHICH ARE MOLECULE AND ION.Molecular compound when two or more atom A (non-metal) combine with two or more atom B (also non-metal).Ionic compound when two or more atom A (metal or you call it positively-charged) combine with two or more atom B (non-metal or you call it negatively-charged).

Answer 5

Ionic

-Has a high melting point

-Dissolves(dissociates into ions) in water.

-Brittle.(when you hit it with something,it cracks and breaks,can not be turned into another shape without breaking.

-Conducts electricity in aqeous solutions.

-Has a crystall,lattice structure.

-Usually formed by combining of a metal and nonmetal.

Covelant

-Low melting and boiling point.

-Usually formed between 2 non-metals.

-Does not separate into non metals in water.

-Easy to separate to elements than ionic ones.

That is mainly it.Nice and simple.

Answer 6

When you look at their formulas, you can easily distinguish between ionic and covalent (molecular) compounds.

There is a limited number of elements which are nonmetals.

You can easily memorize them:

H , O , N , C , S , P , F , Cl , Br , I

The others can be considered as metals.

If the formula of a compound contains only the symbols of nonmetals, that compound is molecular (covalent) compound.

For example; CH2O , PH3, H2O, CH3COOH, CON2H4.

Your compounds are also covalent.

HCl : both H and Cl are nonmetals.

H2S : both H and S are nonmetals.

If in any formula , you see only 1 symbol of a metal you can exactly say that it is an ionic compound.

For axample:

Li2Cr2O7 : both Li and Cr are metals.

CuSO4 : only Cu is metal.

NaNO2 : only Na is metal.

Therefore these are all ionic compounds.

But you must be careful. There is a polyatomic ion that creates a problem. It is "ammonium ion" = NH4^+

Since ammonium is a poly atomic ion it forms ionic salts. Therefore all ammonium salts are ionic.

Example; NH4NO3, NH4Cl, (NH4)2SO4, (NH4)3PO4

The formulas of the given compounds do not contain the symbol of a metal, but they are ionic compounds.

The formations of ionic and covalent compounds are different. Ionic compounds are formed by TRANSFERING electron(s) from a metal atom to a nonmetal atom.

Covalent compounds are formed by SHARING of electrons by two nonmetals atoms.

Therefore, by looking at their formulas we can also say that;

HCl ; a covalent compound formed by sharing electrons by H and Cl atoms.

H2S ; a covalent compound formed by sharing electrons by two H and S atoms.

NaCl : an ionic compound formed by transfering electron from Na atom to Cl atom.

K2S : an ionic compound formed by transfering electron from two K atoms to S atom.

Determining the number of electrons transfered or shared is a different subject and requires the knowledge of electron configurations and valence electrons.

Answer 7

Ionic compounds generally are composed of metals and non- metals. Molecular compounds are generally between non metals. This is a good starting point.

However this is not always the case:-

Some metal compounds are molecular, for example nickel carbonyl, Ni(CO)4,

Some are ionic in the solid but molecular in the vapour, for example FeCl3

Answer 8

If the formula contains a metal and a non metal it is ionic. If the formula contains a non metal and another non metal it is covalent

Answer 9

A molecular compound has more than one kind of element, an ionic compound consists of all the same element.

Answer 10

it will dissociate into ions when dissolved in a solvent