Monday, March 16, 2009

Block 1 March 16th

Choose one ionic compound and one covalent compound and describe their physical properties, similarities, differences and industry uses. How is it also related to green technologies in a positive or negative way.

13 comments:

  1. A ionic bond is salt and a covalent bond is water. Covalent bonds generally have much lower melting and boiling points. They also tend to be more flammable. Similarities of ionic and covalent compounds is that they both have something to do with electrons. They either are being gained, lost, or shared. In covalent compounds the electrons are being shared. In an ionic compounds, there is either a loss or gain of electrons.

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  2. Madison Schrodetzki
    Ms. G
    Chemistry
    Block 1
    3/18/09

    Sodium chloride(NaCl), also known as table salt, is an example of an ionic compound while methane(CH4) is a covalent compound. Some of sodium chlorides properties include a boiling point of 1738 K, a melting point of 1074 K, a white coloring, a crystalline solid form, a lack of odor, a density of 2.16g/cm^3), a molar mass of 58.44 g/mol, and a refractive index of 589 nm. Methane’s properties include a molar mass of 16.042 g/mol, a colorless appearance a density of either 0.717 kg/m^3(gas) or 415 kg/m^3(solid), a melting point of 91 K, and a boiling print of 112 K. Methane and sodium chloride have no significant similarities worth noting but differ in their states methane being most commonly found in a gaseous state while sodium chloride is only found as a solid. Methane is an environmentally friendly fuel die to its low emissions of carbon dioxide. If it becomes more widely used it could possibly help with global warming issue as well as the oil crisis. Sodium chloride is highly effective in reducing salt in an environment, but too much can kill plant life in the vicinity so its use in this area is highly debated. However, it is used by some as a household cleaning agent so it could hypothetically replace harmful chemical cleaning products.

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  3. Methane is an example of ionic bonding and sodium is an example of covalent bonding. There are many difference and similarities between ionic bonding and covalent bonding.Ionic bonding tends to make compounds on the other hand covalent bonding makes molecules.Covalent bonding is made of nonmetals and ionic bonding is made of metals and non-metals. Also, covalent bonding tends to stay neutral while ionic bonding is positive and negative charges.Ionic bonding is a weak charge and covalent bonding is a strong charge. Covalent bonds have a definite and predictable shape and low melting and boiling points.Characteristic property of an ionic compound would be a property that almost all ionic compounds would show.

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  4. Jaspreet Singh
    Block 1
    Chemistry
    MS. G
    3/18/09
    Research

    Calcium carbonate is an ionic compound and it’s also a chemical compound. The formula of calcium carbonate is CACO3. This compound is a common substance that found as rock in all over the world. It is the main component of shells of marine, organisms, snails, and egg shells. It is used in It is commonly used medicinally as a calcium supplement. This compound reacts as a strong acid by releasing carbon dioxide. It will react with water that is saturated with carbon dioxide.

    Carbon Dioxide is a covalent bond and chemical compound. Its chemical formula is CO2. Co2 composed of two oxygen atoms covalently bonded to a single carbon atom. Co2 is a gas that is a standard temperature and also Co2 is a greenhouse gas that is transmits visible light and it strongly absorbs in the infrared and near infrared. Co2 exists in Earth's atmosphere. C02 is used by plants during photosynthesis to make sugar. Co2 is also a toxic in higher concentrations that will make some people feel sleepy.

    The similarities between these two compounds are that they both are chemical compounds. They both are useful for us in some things. Carbon dioxide can be converted in carbonate. Carbon dioxide generated by the acid decomposition of calcium carbonate samples inside the syringe. So that’s all about my research.

    Bibliography
    http://mattson.creighton.edu/Part24-Tums/Part24-Tums.html

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  5. Ms.G
    TylerSorensen
    Block#1
    3/18/09

    NaCl
    Ionic compunds are chemical compounds in which ions are held together by ionic bonds. The positivley charged portion is called a cation, while the negativly charged portion is a anion. Ionic bons are held together by the electrostatic force that exsists between the two oppisetly charged particles.
    One of the most widley used ionic compounds is Sodium Chloride, more popularly known as table salt. Sodium Chloride is used in almost every food we have as a flavoring. The word salary comes from the latin for salt because in anciet rome salt was very valuable. In fact roman soldiers used to pe paid in salt instead of money because it was worth more. Nowadays salt is a fovorite condement to put on food. In fact we used it too much, most junk food is loaded with salt. Americans eat much more of it every day we really need. To much salt is actually bad for the heart and can lead to heart disease and other cardiovascular diseases. Along with the food we eat, salt is also used to melt water because when salt dissolves in water it creats a homogeneus mixture that lowers the melting point of the water. Thats why salt is spread on icy roads, it melts the ice so people dont lose control in wintery conditions. Overall sodium chloride is one of the most usefull ionic compounds to mankind.

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  6. One covalent compound is H2O, water, and an ionic compound is sodium chloride, salt. Some water physical properties is that the appearance is transparent, with a slight hint of blue, crystalline solid or liquid, boiling point is 100 C or 212 F, molar mass of 18.01528 g/mol, density 1000 kg x m^-3 as liquid and 917kg x m^-3 as a solid. Some properties for sodium chloride is the melting point of 1074 K, boiling point of 1738 K, a colorless, white crystalline solid, density is 2.16g/cm^3, molar mass of 58.44g/mol. There are not any similarities between sodium chloride and water. The differences are that is a substance that is needed to live but sodium chloride is needed to live also but too much of it, to plant life, can kill the plant off. Industrial water use includes water used for such purposes as fabricating, processing, washing, diluting, cooling, or transporting a product; incorporating water into a product; or for sanitation needs within the manufacturing facility. Some industries that use large amounts of water food, paper, chemicals, refined petroleum, or primary metals. Sodium chloride is used in our foods, house hold cleaning products, in industry it is used to help the manufacture in chemicals, and also to preserve food products.

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  7. Na+Cl- is an example of an ionic compound. Sodium chloride is commonly known as table salt. It forms crystals in a pattern known as radial symmetry. In this, each ion is surrounded by six ions of the other kind. This arrangement is also known as cubic close packing, and this same basic structure is founded in many other minerals. This has many different uses. Some of these include cooking, manufacturing pulp and paper, setting dyes in textiles and fabric, producing soaps, detergents, and other bath products. Sodium chloride is one of the major sources of industrial chlorine and sodium hydroxide, and it is used in almost every industry.
    CO is an example of a covalent compound. Carbon monoxide is odorless, tasteless, colorless, but highly toxic gas. It has a bond length of 0.1128 nm. It has many uses in bulk chemicals manufacturing. Syngas is used for industrial power, and it is made from carbon monoxide and hydrogen. Methanol is produced by the hydrogenation of CO.
    These are both similar because they can be used for household objects, but they are different because they have different types of uses and toxicity. Salt is used to help "de-ice" winter roads, but it is not necessarily good for the environment. Carbon monoxide has negative effects on the environment because, just like other greenhouse gases, it is part of global warming.
    -Kylie Stoeppel

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  8. Ionic bonds are created as a result of one or more electrons transferring from a metal to a nonmetal. Covalent bonds are formed when the nucleus of both atoms attract two shared electrons. Non-polar bonding occurs when there is an equal sharing of electrons in between nonmetals that are identical. Polar bonding happens when there is an unequal sharing of electrons between non-identical nonmetals in order to complete octets.
    Hydrogen Chloride creates a polar covalent molecule. Chlorine has seven electrons on its outermost shell while hydrogen only has one. These two atoms share electrons so they can achieve the desired amount for an octet. However, chlorine gets an unequal share of the two electrons, although the electrons are still shared (not transfered as in ionic bonding), the sharing is unequal. The electrons spend more of the time closer to chlorine. As a result, the chlorine acquires a "partial" negative charge. At the same time, since hydrogen loses the electron most - but not all of the time, it acquires a "partial" charge. The partial charge is denoted with a small Greek symbol for delta. It is used to etch semiconductor crystals or in the processing of rubber. Rubber and toxic fumes are not good for the environment and take a long time to break down into nutrients.
    An ionic bond you may be familiar with is common white crystalline table salt (NaCl). Salt consists of positive sodium ions (Na+) and negative chloride ions (Cl-). On the other hand the element sodium is a silvery gray metal composed of neutral atoms which react vigorously with water or air. Chlorine as an element is a neutral greenish-yellow, poisonous, diatomic gas (Cl2). Salt is commonly used to lower the melting/freezing rate of H2O when sprayed on asphalt which isn’t necessarily beneficial for the environment.
    -jacqueline aldana 3.18.09

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  9. There are distinct differences between ionic and covalent compounds. The one way to tell them apart is to measure the reactive ability of the atoms to draw electrons in a bond towards themselves. One ionic compound for example is sodium chloride. Sodium chloride is the scientific name for table salt. It is most responsible for the salinity of the ocean and of the extracellular fluid of many multicellular organisms. It is the major source of industrial chlorine and sodium hydroxide, and used in almost every industry. Sodium chloride is a colorless, odorless substance that has a melting point of 801 degrees c. and a boiling point of 1465 degrees c. One covalent compound is hydrogen. Hydrogen is the simplest non-polar covalent molecule. Each atom in a hydrogen molecule has one electron and needs 2 to complete its first energy level. Like salt hydrogen is both colorless and odorless. Hydrogen is the most abundant chemical element, constituting roughly 75% of the universe's elemental mass. All ionic and covalent compounds have different things in common just like salt and hydrogen do.
    -Amy Hogan

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  10. MS G WHY YOU ALWAYS GIVING US THESE THINGS????

    An ionic bond is a salt. A covalent bond is water. Covalent bonds usually have a lower rate of burning or melting.. They are also real flamable. Similarities of ionic and covalent compounds is that they both have something to do with electrons. They can only be gained, lost, or shared. Electrons are ALWAYS being shared in covalent compounds. In an ionic compound, there can only be a loss or a gain of electrons..

    AND THATS IT.

    sorry its late Mz "OG"
    ┌∩┐(^_^)┌∩┐
    -Ronald Whitmill

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  11. Jeff Chang

    One of the example of Ionic compound is Sodium Chrolide which is also known as NACL and one of the covalent bond is water also known as H2O. each of these properties has different chrarcteristic of how does each element works.

    The ionic compound NACL, also known as table salt. this salt often seen in ocean. there are many different physical properties of table salt. for example NACL has moler mass of 58.44g/mol and for how it looks like is looks like Colorless and white crystalline solid. and for certain thing like it's density is has 2.16g/cm not only all these it has boiling point of 1465 °C and melting point of 801 °C and if u put the salt with water it melt at 25 celcius.

    For the colvalent compound of Water, also known as H2O. it has molar mass of 18.01528(33) g/mol. it appearance it's like sodium colorless but it has slight hint of blue tho that's the appearance of water. it has melting point of 0 celcius and boiling point of 100 celcius. not only this its acidity is 15.37 so is the balcity.

    How does it help our future use? well it can help it by poducing more technology and it can use of water to produce plants etc. also it can use of certain things. Last but not least it would definitely help our green environment. that how does it helps the future technology.

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  12. Ionic and covalent compounds

    Ionic compound: Or more commonly used as salts, or table salts. Sodium Chloride formed by a sodium ion Na+, and a chloride ion Cl-. The sodium ion looses an electron and gives it to a chlorine ion. Sodium chloride has a high melting a boiling point; because the number of charges on the ions and the sizes of the ions. Sodium chloride is soluble in water, and insoluble in organic solvents.

    Covalent compound: A covalent compound is compounds in which the atoms that are bounded share electrons rather than transfer them from one to the other. For example HCL. Unlike ionic compounds, covalent compounds have a much lower boiling point, compared to ionic compounds covalent compounds are soft and squishy, tend to be more flexible. Covalent compounds do not conduct electricity in water, and are not very soluble in water.

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  13. BY MEET B.
    BLOCK-1
    The ionic compound that I chose was sodium Chloride. The formula for this is NaCl.This is known as a very common salt, since it is found in nature in cubic crystals of rock salt. Some names that this compound is known with are halite and table salt. Sodium chloride is soluble in water and very slightly soluble in ethanol. The appearance of this compound is white or colorless or powder. The melting point of NaCl is 801 °C, and the boiling point is 1465 °C (1738 K). Sodium, in other words salt, is used in a lot of things. For example, salt in cooking, manufacturing pulp and paper, to setting dyes in textiles and fabric, to producing soaps, detergents, and other bath products. Chlorine and sodium hydroxide are the major sources that are a used in almost every industry.
    The covalent compound that I chose is Hydrogen chloride. The formula for this is HCl. This contains one atom of hydrogen and one atom of chlorine. Hydrogen chlorine exists as a gas.It is also very soluble in water. The similarity between these two compounds is that they both are soluble in water. Hydrogen chloride is colorless, nonflammable gas with an acrid odor. The melting point is -114.2 °C (158.8 K) and, the boiling point is -85.1 °C (187.9 K).This covalent compound is very important in todays industry.

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