Please give a practical application of covalent compounds and ionic compounds. Include various industries and don't forget to give specific examples within that industry.
This should be two paragraphs total, one paragraph summary( IN YOUR OWN WORDS, DON'T COPY AND PASTE FROM WIKIPEDIA) for the covalent compounds and a one paragraph summary for the ionic compounds.
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Ye Aung
ReplyDeleteBlock - 3
CHEM
Ms. G
Bonding between non-metals consists of two electrons shared between two atoms. Using the Wave Theory, the covalent bond involves an overlap of the electron clouds from each atom. The electrons are concentrated in the region between the two atoms. In covalent bonding, the two electrons shared by the atoms are attracted to the nucleus of both atoms. Neither atom completely loses or gains electrons as in ionic bonding.There are two types of covalent bonding: 1. Non-polar bonding with an equal sharing of electrons.
2. Polar bonding with an unequal sharing of electrons. The number of shared electrons depends on the number of electrons needed to complete the octet.
Ionic compounds are basically defined as being compounds where two or more ions are held next to each other by electrical attraction. One of the ions has a positive charge (called a "cation") and the other has a negative charge ("anion"). Cations are usually metal atoms and anions are either nonmetals or polyatomic ions (ions with more than one atom). Think back to grade school: The same thing that makes the positive and negative ends of a magnet stick to each other is what makes cations and anions stick to each other.Usually, when we have ionic compounds, they form large crystals that you can see with the naked eye. Table salt is one example of this - if you look at a crystal of salt, chances are you'll be able to see that it looks like a little cube. This is because salt likes to stack in little cube-shaped blocks.
Covalent compounds is a compound in which the atoms that are bonded share electrons rather than transfer electrons from one to the other. While ionic compounds are usually formed when metals bond to nonmetals, covalent compounds are formed when two nonmetals bond to each other.
ReplyDeleteAll ionic compounds form crystals. table salt is a great example of an ionic compound. ionic compounds tend to have high melting and boiling points. the crystals that form table salt are big chunks stuck together. to break the positive and negative charge, it takes a huge amount of energy. this is energy is heat. Ionic compounds are very hard. they are hard because of the way they are held together. ionic compounds don't really move around a lot which is why they are so stuck together. Ionic compounds conduct electricity when they dissolve in water. when the ions wonder all over in water.
Aung Myat
ReplyDeleteBlock 3
CHEM
Ms. G
Ionic compounds are basically two or more ions are held next to each other by electrical attraction. One of the ions has a positive charge called a "cation" and the other has a negative charge called "anion". All ionic compounds form crystals, have high melting and boiling points and are very hard and very brittle. Usually, when we have ionic compounds, they form large crystals that you can see. Table salt is one example of ionic compound. If you look at a crystal of salt, chances are you'll be able to see that it looks like a little cube. This is because salt likes to stack in little cube-shaped blocks.
Covalent compounds are compounds where the atoms that are bonded share electrons rather than transfer electrons from one to the other. While ionic compounds are usually formed when metals bond to nonmetals, covalent compounds are formed when two nonmetals bond to each other. Compare to ionic compounds, covalent compounds have much lower melting and boiling points, are soft and squishy, and tend to be more flammable.
Alex Almadova
ReplyDeleteChemistry
Block 3
A ionic compound is a chemical compound in which ions are held together in a lattice structure by ionic bonding. They have strong electrostatic bonds and they generally have high melting and boiling points. The name comes from the oxidation number written in parenthesis, followed by the name of the anion. Covalent Bonding is a form of chemical bonding that is characterized by the sharing of pairs of electrons between atoms or between atoms and other covalent bonds. So I would describe the difference between the two is that one holds ions together to form the bond and the other shares the electrons to form more then one bond. Also covalent compounds are soft and squishy
Blair Slavazza
ReplyDeleteBlock 3
Ms. G
Chem
A covalent bond is when two atoms combine, sharing their valence electrons. There are many applications for covalent compounds in our world. The obvious industry is Chemistry, discovering new compounds everyday. Another is medicine, creating cures for medicinal purposes. X-ray emission spectra of covalent compounds helps doctors see super fine images in the human body. Phosphorus pentoxide as a dehydrating agent.
An ionic bond is when two atoms combine, but one atom takes electrons and the other gives them up. There is NOT sharing, only a transfer. This creates a charge for the atoms, one becoming more negative (more electrons) and one becoming more positive (less electrons). A common ionic compound is table salt, NaCl. Another useful ionic compound is copper (II) fluoride, CuF2 . It is being tested right now for a 'greener' route for fluoroaromatics.
Valerie Ruiz
ReplyDeleteChemistry
Block: 3
Ms. G
Practical Applications for ionic and covalent compounds
There are several practical applications for an covalent compound. Bonding between two metals consists of two electrons shared between two atoms. The properties of graphite interactions intercalation compounds (GIC’s) is a possible application. Five families of intercalates give high electrical conductivity to GIC's: pentafluorides which leads to high conductivity, 108 S/m (higher than metallic copper); metal chlorides; fluorine and alkali metals with bismuth giving relatively high conductivity of the order of 107 S/m plus stability in air; and residual halogens showing extremely high stability under severe conditions. Electrodes of different GIC's have been used as primary and secondary batteries, where their characteristics are high electrical conductivity and easy diffusion of electrochemically active species . Lithium batteries of a covalent graphite fluoride are now widely used commercially. Large amounts of hydrogen can be stored in the functional space in alkali metal-GIC's. The same GIC's show a high coefficient of isotope separation of hydrogen at liquid nitrogen temperature. The structure and texture of the host graphite play an important role in the absorption and separation behaviors of GIC's and this all plays a role from the Materials Research Society.
Also, there are many applications that could be used for an ionic compound. Ionic compounds are defined as compounds where two or more ions are held next to each other by electrical attraction. Therefore, one of the ions has a positive charge called a cation and the other has a negative charge, which is an anion. Cations are usually metal atoms and anions are either nonmetals or polyatomic ions; which are ions with more than one atom. For example, table salt. When you look at table salt, you can mostly tell by observing it that it is made of tiny crystals. This is because salt likes to stack in little cube-shaped blocks. So, thus, this is explainable for a covalent compound and chemistry could play part in this type of industry for this type of molecular compound.
Dushyant Singh
ReplyDeleteBlock 3
Ionic compounds are used in a variety of different areas of industry. An ionic compound is a chemical compound in which ions are held together in a lattice structure by ionic bonds. The positively charged portion consists of metal cations and the negatively charged portion is an anion or polyatomic ion. Ionic compounds have strong electrostatic bonds between particles. While ionic inorganic compounds are solids at room temperature and will usually form crystals, organic ionic liquids are of increasing interest.
Covalent compounds consist of molecules and not ions and do not conduct electricity. Also low melting and boiling points; forces are weak, a very small amount of energy is required to break the bond between the molecules corresponding to low melting point and boiling point. Covalent compounds dissolve in organic solvents. As they do not contain ions, solvation does not take place when water is added to the compound. They are less dense when compared to water.
Erica Bartelli
ReplyDeleteMarch 24, 2009
Ms. G
Chemistry
Block 3
Covalent bonding is a chemical bond when electrons are shared between atoms. It is usually metal to non-metal bonding. Covalent comes from a word and it is used because it means the atoms are pairing together by bonding pairs of electrons with each other. It can also happen between bonds and other bonds that can bond covalently. The word co means jointly which basically means they are together. There are a lot of different covalent bonds in the world today. The strength of the covalent bond comes from the polyatomic molecules along with the atoms.
Ionic compounds are when ions are held together in certain lattice structures by ionic bonds. The positively charged part usually is made of cation metal parts and the negatively charged part is made of anion non-metals or polyatomic ions. Electrostatic forces that keep it all together hold ions in ionic compounds together. Ions can also be single atoms.
Kimberey Hoos
ReplyDelete3.24.09
3block
Covalent & Ionic Compounds
Covalent compounds are compounds in which the atoms that have already bonded, share electrons instead of transferring electrons to each other. Covalent compounds form when a nonmetal bonds with another nonmetal. When two nonmetals bond with each other, instead of an element giving electrons to another, the two elements end up having the same electronegativity. Resulting with, neither element being able to exchange electrons with one another. They would have to share electrons instead of transferring them.
An ionic compound is a compound when two or more ions are together due to electromagnetivity, or the electrical attraction. Ions have two differently charged categories. A "cation" is an ion with a positive charge. An "anion" is a negatively charged ion. Usually ionic compounds form large crystals, like table salt. Ionic compounds tend to have high boiling and melting points.
sources: http://misterguch.brinkster.net/covalentcompounds.html
http://misterguch.brinkster.net/ionic.html
Tina Xu
ReplyDeleteBlock:3
3/23/09
Covalent bonds are when the sharing of valence electrons. It is especially useful for hydrogen gas which makes up out atmosphere. Carbon is especially useful as it has a great ability to form and create big compounds. A scientist from MIT managed to get a vaccine that one injected will make antibodies create covalent bonds. By doing this the vaccine can be used to make the antibodies attack the things they need to destroy. This could potentially help the world of cancer. Diamonds are very precious and expensive. The way they are is due to the configuration of carbon atoms and the covalent bond between them. It is yet to be understood how this occurs but it would be really cool if it can be remade.
Ionic bonding is the giving away or accepting in valence electrons. They have extremely high melting points even more then covalent bonds. Sodium Chloride is the more famous example of the ionic bonding. The number electrons sodium can give away the number chloride needs match. This makes the elements that much more stable. Magnesium is another example and is closer to the nuclei. This make the bond even stronger.