Shopping on line can be easy, simple and save you lots of money. It can also take a lot of your time, frustrate you, and result in unwanted purchases. Now the same can be said for regular high street shopping, but with the vast opportunity presented by the Internet it will pay you to spend a few minutes reading this and understanding how to better optimize your Ionic Compound shopping experience:
1. Compare - without doubt the biggest advantage that the Ionic Compound offers shoppers today is the ability to compare thousands of Ionic Compound at a time. This is a great thing, but not necessarily all the time! Too much can be daunting at times so take advantage of the great comparison sites and where possible let them do the hard work for you.
2. Research - if it has been said it will be on the internet. Ignorance is no longer a justifiable reason for buying the wrong thing. Take the time to research in detail everything that you could possible want to know about
3. Testimonials - don't know anybody that has bought a Ionic Compound? Wrong! If the Ionic Compound is good the internet will let you know. Use the Internet as a friend and get testimonials before you buy.
4. Questions - Got a question about Ionic Compound then search the Forums, FAQ's, Blogs etc. Don't be afraid to ask .....
5. Reputation - Never heard of the company selling Ionic Compound? Don't worry, no reason why you should know every company in the world, but you know someone that does! Use the internet to find out what people are saying about Ionic Compound and build up a picture of their reputation for sales, returns, customer service, delivery etc.
6. Returns - still worried that even after all of the above your Ionic Compound wont be what you want? Check out the returns policy. There is so much competition now that someone, somewhere is bound to offer the terms that you are comfortable with.
7. Feedback - happy with your Ionic Compound then let people know, after all you are depending on others people input in your buying decision, so why not give a little back.
8. Security - check for the yellow padlock on the Ionic Compound site before you buy, and the s after http:/ /i.e. https:// = a secure site
9. Contact - got a question about Ionic Compound, or want to leave a comment then check out the sites contact page. Reputable companies have them and respond.
10. Payment - ready to pay for your Ionic Compound, then use your credit card or PayPal! Be aware of companies that don't accept them, there may be genuine reasons but given the huge amount of choice you have when buying online there is no reason at all not to buy via credit card or PayPal.
structure of
sodium chloride, NaCl, a typical ionic compound. The purple spheres are sodium
cations, Na+, and the green spheres are
chloride anions, Cl−.In
chemistry, an
ionic compound is a
chemical compound in which ions are held together in a lattice structure by
ionic bonds. The positively charged ion is usually a metal ion and the negatively charged ion is non-metallic element or molecule.
Ions can be single atoms, as in common table salt sodium chloride, or more complex groups such as
calcium carbonate. But to be considered an ion, they must carry a positive or negative charge. Thus, in an ionic bond, one 'bonder' must have a positive charge and the other a negative one. By sticking to each other, they resolve, or partially resolve, their separate charge imbalances. Positive to positive and negative to negative ionic bonds do not occur. (For a real world analogy, experiment with a pair of bar magnets.)
Chemical compounds are rarely strictly ionic or strictly covalent. Except for the most electronegative/electropositive pairs such as cesium fluoride, ionic compounds usually exhibit a degree of covalency. Similarly,
covalent bond often exhibit charge separations. See also HSAB theory.
Physical properties of ionic and molecular compounds:{| class="wikitable"|-!! Ionic compounds! Molecular compounds|-| States (at RTP)| Solid| Can be solid, liquid or gas at room temperature|-| Electrical conductivity| Solid: no
Molten: yes| No|-| Boiling point| High| Low|-| Solubility in water| Often high| Variable; usually lower than ionic|-| Thermal conductivity| Low| Low|}
Characteristics
Ionic compounds have strong
electrostatic bonds between particles. As a result, they generally have high melting and boiling points. They have good electrical conductivity when molten or in aqueous solution. While ionic inorganic compounds are solids at room temperature and will usually form crystals, organic
ionic liquids are increasingly of interest.
Solubility
Following the aphorism, "like dissolves like", ionic compounds dissolve in
polar solvents, especially those which ionize, such as water and
ionic liquids. They are usually appreciably soluble in other polar solvents such as alcohols,
acetone and dimethyl sulfoxide as well. Ionic compounds tend not to dissolve in nonpolar solvents such as
diethyl ether or petrol.
When an ionic compound is named, the cation is named first and then the anion. When an elemental anion is named, the suffix, -ide, is added to the name of the element. There are two common types of cations: Type I and Type II. Type I cations have only one charge and their name is simply listed when the compound is named. Type II cations have more than one charge and when the ionic compound is named, a Roman numeral is used to denote the charge of the cation.In addition, there are common polyatomic anions which do not have suffixes in their name such as hypochlorite (ClO–).
Nomenclature
According to the IUPAC, an ionic compound's common name is written using two words. The name of the cation comes first with the oxidation number written in parenthesis, followed by the name of the anion. For example, Fe2(SO4)3 is named as Iron(III) Sulfate.
structure of sodium chloride, NaCl, a typical ionic compound. The purple spheres are sodium cations, Na+, and the green spheres are
chloride anions, Cl−.In chemistry, an
ionic compound is a chemical compound in which
ions are held together in a lattice structure by ionic bonds. The positively charged ion is usually a metal ion and the negatively charged ion is non-metallic element or molecule.
Ions can be single atoms, as in common table salt sodium chloride, or more complex groups such as
calcium carbonate. But to be considered an ion, they must carry a positive or negative charge. Thus, in an ionic bond, one 'bonder' must have a positive charge and the other a negative one. By sticking to each other, they resolve, or partially resolve, their separate charge imbalances. Positive to positive and negative to negative ionic bonds do not occur. (For a real world analogy, experiment with a pair of bar magnets.)
Chemical compounds are rarely strictly ionic or strictly covalent. Except for the most electronegative/
electropositive pairs such as cesium fluoride, ionic compounds usually exhibit a degree of covalency. Similarly, covalent bond often exhibit charge separations. See also HSAB theory.
Physical properties of ionic and molecular compounds:{| class="wikitable"|-!! Ionic compounds! Molecular compounds|-| States (at RTP)| Solid| Can be solid, liquid or gas at room temperature|-| Electrical conductivity| Solid: no
Molten: yes| No|-| Boiling point| High| Low|-| Solubility in water| Often high| Variable; usually lower than ionic|-| Thermal conductivity| Low| Low|}
Characteristics
Ionic compounds have strong electrostatic bonds between particles. As a result, they generally have high melting and boiling points. They have good electrical conductivity when molten or in aqueous solution. While ionic
inorganic compounds are solids at room temperature and will usually form crystals, organic ionic liquids are increasingly of interest.
Solubility
Following the aphorism, "like dissolves like", ionic compounds dissolve in
polar solvents, especially those which ionize, such as water and ionic liquids. They are usually appreciably soluble in other polar solvents such as
alcohols,
acetone and dimethyl sulfoxide as well. Ionic compounds tend not to dissolve in
nonpolar solvents such as
diethyl ether or
petrol.
When an ionic compound is named, the cation is named first and then the anion. When an elemental anion is named, the suffix, -ide, is added to the name of the element. There are two common types of cations: Type I and Type II. Type I cations have only one charge and their name is simply listed when the compound is named. Type II cations have more than one charge and when the ionic compound is named, a Roman numeral is used to denote the charge of the cation.In addition, there are common polyatomic anions which do not have suffixes in their name such as hypochlorite (ClO–).
Nomenclature
According to the
IUPAC, an ionic compound's common name is written using two words. The name of the cation comes first with the oxidation number written in parenthesis, followed by the name of the anion. For example, Fe2(SO4)3 is named as Iron(III) Sulfate.
Ionic compound - Wikipedia, the free encyclopedia
In chemistry, an ionic compound is a chemical compound in which ions are held together in a lattice structure by ionic bonds. Usually, the positively charged portion consists of ...
BBC - GCSE Bitesize - Chemistry | Classifying Materials | Ionic ...
When metals react with non-metals, electrons are transferred from the metal atoms to the non-metal atoms, forming ions. The resulting compound is called an ionic compound.
BBC - GCSE Bitesize - Chemistry | Classifying Materials | Formulae of ...
You also need to be able to write down the correct formulae for simple ionic compounds. ... Formulae of ionic compounds. You also need to be able to write down the correct formulae ...
Ionic Compounds
Introduction: Those molecules that consist of charged ions with opposite charges are called IONIC. These ionic compounds are generally solids with high ...
CHEMystery: Atomic Structure and Bonding: Ionic Compounds
Ionic compounds (more commonly known as salts) are formed when metals react with nonmetals. A common salt, table salt, or sodium chloride (NaCl) is formed from a sodium ion, Na ...
CHEMystery: Atoms and Molecules: Ionic Compounds
Under some conditions, atoms of certain elements can transfer electrons between them when they form a compound. They are usually formed between metals and nonmetals.
ionic compound
Substance composed of oppositely charged ions ... Tiscali Quicklinks. Please visit our Accessibility Page for a list of the Access Keys you can use to find your way around the site ...
Ionic compounds - Hutchinson encyclopedia article about Ionic ...
ionic compound. Substance composed of oppositely charged ions. All salts, most bases, and some acids are examples of ionic compounds. They possess the following general properties ...
Ionic Compound
Encyclopedia information on Ionic Compound ... Ionic Compound. An ion ic compound is one in which at least two of the elements or compounds in the group are oppositely-charged ions ...
Naming Ionic Compounds
A chemistry tutorial on naming ionic compounds suitable for high school students ... Summary. Positively charged ions are called cations; Negatively charged ions are called anions ...
