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Tuesday, October 22

  1. msg QOTW #8 message posted QOTW #8 What are compounds made of and how are they formed? Compounds are composed of two or more elements …
    QOTW #8
    What are compounds made of and how are they formed? Compounds are composed of two or more elements found on the periodic table. For instance how is the compound Titanium (IV) Chloride bonded and what are its properties?
    Let's start with the chemical properties of Titanium (IV) Chloride. To see the chemical ore operatives of a compulsions we will look at the elements ability to react with another. We will start by looking at each elements outer shell to see how many valence electrons they have. Titanium 4 valence electrons and since this element is the cation the 4 is a postive. Chlorine has 7 valence electrons making it a negative 1 charge. So in order to complete the bonding process the there muct be 4 chlorine to make up for the 4 electrons titanium wants to get rid of. Making the molecular formula TiCl4.
    The physical properties of TiCl4 is the physical state of this substance is a liquid with a clear light yellow tint to it. The substance is acidic acording to the pH scale. The substance has a boiling point of 136 deg C and a melting point of -24 deg C. The compound has a molecular mass of 189.71 grams.
    What kind of bound is TiCl4? The type of bond is ionic because titanium is on the left if the stair step making it a metal. Chlorine is on the right of the stair step making it a nonmetal. When a non metal and a metal bond it is and ionic bond. Just to note something when a nonmetal and a metal bond they make a salt so TiCl4 is a salt.
    That is the chemical and physical properties of the ionic bonded compound Titanium (IV) Chlorine.
    Sources:
    http://avogadro.chem.iastate.edu/MSDS/TiCl4.htm
    http://chemistry.about.com/od/matter/a/Chemical-Properties.htm
    9:58 pm
  2. msg QOTW #8 message posted QOTW #8 Emily Rzepka Mr. Talbot ADV Chemistry 22 October 2013 Titanium (IV) Chloride: Titanium (…
    QOTW #8
    Emily Rzepka
    Mr. Talbot
    ADV Chemistry
    22 October 2013

    Titanium (IV) Chloride:
    Titanium (IV) chloride is compound that consists of the elements titanium and chlorine. The empirical formula, which consists of the symbols for the elements combined in a compound, with subscripts showing the smallest whole-number mole ratio of the different atoms in the compound, for titanium (IV) chloride is TiCl4 (Davis 245). Titanium, a metal, is the ninth most abundant element in the Earth’s crust. Titanium has the same amount of strength as steel does and, as it is 45% lighter, is commonly used in airplanes and missiles due to its relatively small weight (Gagnon 1). Chlorine is a gas that is very reactive to most other elements. Chlorine is a respiratory irritant; the gas irritates the mucous membranes of the body and the liquid can burn the skin (Winter 1). Despite the properties of titanium and chlorine separately, when combined to form titanium (IV) chloride, the properties differ. It is important to know or to be able to figure out methodology with which you’d be able to determine the new properties of titanium (IV) chloride so as to predict how titanium (IV) chloride will behave as a compound.
    It is also important to look at the type of bond through which titanium (IV) chloride is formed. Given that titanium is a metal and chlorine is a nonmetal, and that they are located on opposite sides of the periodic table of elements, it is apparent that titanium (IV) chloride is formed by an ionic bond. An ionic bond is a form of chemical bonding that results from the electrical attraction between cations and anions (Davis 175). In the compound titanium (IV) chloride, titanium is the cation and has an oxidation number of +4. Chlorine is the anion and has an oxidation number of -1. To neutralize the titanium (IV) chloride, 1 atom of titanium would be needed for every 4 atoms of chlorine, as shown by the empirical formula (TiCl4).
    In order to discover the physical and chemical properties of titanium (IV) chloride, you need to take into account visual observations as well as run some tests on the substance. Appearance is an important physical property that can be acquired by simply looking at the substance. The appearance of titanium (IV) chloride is a colorless liquid at room temperature. Another physical property of titanium (IV) chloride is its melting point, the temperature at which the solid melts to become a liquid (“Melting Point, Boiling Point, Freezing Point” 1). The melting point can be found by exposing the chemical to extreme temperatures, if such conditions can be created by your own resources, and observing when there is a change of state. The melting point of titanium (IV) chloride is -24.1 degrees Celsius. Another important physical property would be the boiling point of a chemical, when a liquid reaches a temperature at which the vapor pressure is large enough that bubbles form inside the body of the liquid (“Melting Point, Boiling Point, Freezing Point” 1). The boiling point of titanium (IV) chloride is 136.4 degrees Celsius.
    In addition to physical properties, chemical properties are also important to look at when describing a substance. For titanium (IV) chloride, a significant chemical property is its reactivity to water and moisture. If combined with water, it’s found that titanium (IV) chloride reacts quite violently with water or moisture in the atmosphere in general. This chemical property is important to know in regards of safety measures. Handling this chemical is potentially very dangerous if exposed to moisture, so caution is gravely needed when interacting with this chemical (“Titanium tetrachloride” 1). Another chemical property is pH, which can be tested using pH strips. Titanium (IV) chloride, when tested for pH, is found to be acidic. These chemical properties, as mentioned above briefly, are important to know if only for safety measures at the very least.
    Using basic science knowledge and just a few keystrokes on the internet, we are able to figure out many physical and chemical properties of chemicals, as well as the different types of bonds that hold the things we come into contact with together. Whether the need to know these properties is for mere intellectual pleasure or if the safety of someone depends on this knowledge, it is easily accessible. Science rules our world and it is only right to acknowledge its influence in our lives!


    Works Cited
    Davis, Raymond E., et al. Modern Chemistry. Austin: Holt, Rinehart, and Winston, 2006. Print.
    Gagnon, Steve. “The Element Titanium.” Jefferson Lab. Jefferson Lab, n.d. Web. 22 Oct. 2013.
    <http://education.jlab.org/itselemental/ele022.html>.
    “Melting Point, Freezing Point, Boiling Point.” Liquids. n.d. Web. 22 Oct. 2013.
    <http://chemed.chem.purdue.edu/genchem/topicreview/bp/ch14/melting.php>.
    “Titanium.” Visual Elements Periodic Table. Royal Society of Chemistry, 2013. Web. 22 Oct. 2013.
    <http://www.rsc.org/periodic-table/element/22/>.
    “Titanium Tetrachloride.” Cameo Chemicals. Cameo Chemicals, n. d. Web. 22 Oct. 2013.
    <http://cameochemicals.noaa.gov/chemical/1610>.
    Winter, Mark. “Chlorine.” WebElements. WebElements, 1993-2012. Web. 22 Oct. 2013.
    <http://www.webelements.com/chlorine/>.
    9:52 pm
  3. msg QOTW #8 message posted QOTW #8 Titanium (IV) Chloride, also known as Titanium Tetrachloride, is a very interesting compound that i…
    QOTW #8
    Titanium (IV) Chloride, also known as Titanium Tetrachloride, is a very interesting compound that is not found in nature. As with any other compound, it has unique chemical and physical properties that make the compound what it is. One property is the kind of chemical bond that forms the compound. This can be determined by finding the difference between the electronegativity of Titanium and Chlorine, which is 3.0-1.5=1.5. This means that Titanium Tetrachloride is a polar-covalent molecule. A polar-covalent bond is where the charge of the molecule is unevenly distributed, making it a cross between a covalent bond and an Ionic bond; Titanium Tetrachloride is closer to being an Ionic compound.
    Other properties are a compounds freezing/melting point and boiling point. Because Titanium Tetrachloride is a liquid at room temperature, you would have to find its freezing point. When the substance is cooled down enough, you would find it has a freezing point of -24 Degrees Celsius. To find the boiling point, you would heat up the substance until it started to boil, which is at 136 Degrees Celsius. pH is also an important property to determine. You can do this by dipping a strip of litmus paper into the substance; you would determine that it is an acid.
    Another good thing to determine is how the compound reacts with other substances. A good substance to test this with is water, because water is almost everywhere. If you added Titanium Tetrachloride to water, you would see that it reacts very violently with it, producing Hydrogen Chloride, Titanium Oxides, and Oxychlorides. It can also react with water in the air and produce droplets of Hydrochloric Acid. This is why Titanium Tetrachloride is considered a dangerous compound; it reacts violently with water, so it can cause serious damage if you get it on you. Titanium Tetrachloride is an important industrial compound, being used mostly in the production of pure Titanium metal, as well as Titanium Dioxide. It was also used to produce smokescreens during navel battles.
    Being able to determine the properties of Titanium Chloride, or any compound for that matter, can be very helpful. In the case of Titanium Chloride, just knowing what it reacts to allows you to use it safely when needed and avoid harming yourself.

    Sources:
    http://en.wikipedia.org/wiki/Titanium_tetrachloride
    http://avogadro.chem.iastate.edu/MSDS/TiCl4.htm
    http://www.titaniumexposed.com/titanium-tetrachloride.html
    http://www.epa.gov/ttnatw01/hlthef/titanium.html
    9:45 pm
  4. msg QOTW #8 message posted QOTW #8 Have you ever wondered about discovering what makes a compound different from other compounds? They…
    QOTW #8
    Have you ever wondered about discovering what makes a compound different from other compounds? They all have different chemical and physical properties and bond differently. Elements play a role in every part of life. One compound that is in the metal of the buildings that surround us every day, titanium chloride.

    The first part is to understand that compounds have different properties than each element in the compound does by itself. The properties of a compound are very easy to discover. Chemical properties are the properties that become apparent during a chemical reaction. You can observe chemical properties very easily. Just by looking you could see that titanium chloride is a liquid and has no color. You could also smell that it has a very strong odor.

    Physical properties are properties that can be measured and they describe the state. One physical property of titanium chloride is melting point (-25 degrees C) and this can be determined by heating the compound until it melts. Boiling point is another physical property of titanium chloride (136 degrees C) and that can be discovered by heating the compound until it boils. One other example of a physical property is density. Titanium has a density of 1.73 g/mL. Destiny is calculated by dividing the compound's mass by its volume.



    Next, determine if the compound is ionic or covalent. Ionic bonds form between a metal and a nonmetal while covalent bonds form between two nonmetals. Since chlorine is a nonmetal, and titanium is a metal, the bond is ionic. The type of bond also has to do with electro negativity, or the ability of an atom in a compound to attract electrons.

    Chemical compounds have very many characteristics. The characteristics can fall into the category of physical and chemical properties and the type of bond the compound forms. Discovering these for compounds such as titanium chloride, can be as simple as just observing or it could take some research and calculating.

    Sources:
    "TITANIUM TETRACHLORIDE." chemicalbook.com. Chemical book. Web. 22 Oct 2013. <http://www.chemicalbook.com/ChemicalProductProperty_EN_CB7854231.htm>.
    "Physical Property" Wikipedia.com. Wikimedia Foundation, Inc., 3 October 2013. Web. 22 October 2013.
    http://en.wikipedia.org/wiki/Physical_property
    8:42 pm
  5. msg QOTW #8 message posted QOTW #8 There are a lot of different ways to figure out the physical and chemical properties of Titanium (I…
    QOTW #8
    There are a lot of different ways to figure out the physical and chemical properties of Titanium (IV) Chloride. To discover the physical properties there are several tests that you can do. Physical properties are properties that don't change the chemical nature. Some of them are the boiling point, freezing point, melting point, color and smell. To find the boiling point you have to heat the Titanium (IV) Chloride until it boils and whatever temperature it is when it boils that is the boiling point, the boiling point for Titanium (IV) Chloride is 136 degrees Celsius. To find the freezing point which is -24 degrees Celsius you need to cool the Titanium (IV) Chloride until it freezes. Also by using your senses you can figure out many other physical properties like color and smell. The color of this is clear and it has a penetrating odor.
    Chemical properties are flammability, pH, toxicity and reactivity to water. To test flammability you would put the titanium in a flame and see how easily it catches flame and the reactivity for TiCl4 is high. Another test you can do is put the chloride in water and see how it reacts and if it is soluble in the water. To find the pH you would use pH strips to figure out if it is an acid or base. The bond that makes Titanium (IV) Chloride is an ionic bond. To decide which type of bond it is you have to figure out the charges of and if each element is a gas or a metal. So since Titanium is a metal and Chlorine is a gas and it is on the right side of the stair step it would create an ionic bond.

    http://www.iun.edu/~cpanhd/C101webnotes/matter-and-energy/properties.html
    http://www.caslab.com/Titanium-Tetrachloride.php5
    http://www.green-planet-solar-energy.com/chemical-element-titanium.html
    http://avogadro.chem.iastate.edu/MSDS/TiCl4.htm
    8:24 pm
  6. msg QOTW #8 message posted QOTW #8 Titanium and Chlorine come together and form an ionic bond, which is called Titanium (IV) Chloride,…
    QOTW #8
    Titanium and Chlorine come together and form an ionic bond, which is called Titanium (IV) Chloride, TiCl₄. Titanium is a metal and Chlorine is a non-metal and this is why they form a ionic bond. The physical properties are the things that you can smell, taste, feel, hear etc. They are the senses of a human. Some of the physical properties that you can test for are melting point, density, its freezing point and the way it just looks. The melting point of TiCl4 is 1370 degrees Celsius, and the boiling point is also 136 degrees Celsius. You have to take your time and look over the substance and determine all of the characteristics that it holds, and go into detail of it looks like and smells like.
    Chemical properties are different and they include things like pH level, toxicity and the way it reacts with other elements which is reactivity. The reactivity of TiCl4 is very high and can cause a violent reaction. You can test other things like the pH with pH strips, and you can test how flammable the substance is by putting fire to it and testing it like that. You can tell if it is a chemical reaction if there is color change or if after you complete the reaction, you can change it back to its original state. To figure out the type of bonding that occurs, you need to know whether the elements are metals or non-metals and the charges of TiCl4.

    http://www.merckmillipore.com/chemicals/titaniumiv-chloride/MDA_CHEM-812382/p_9Yyb.s1LJtQAAAEWC.EfVhTl
    http://avogadro.chem.iastate.edu/MSDS/TiCl4.htm
    http://www.chemspider.com/Chemical-Structure.56398.html
    8:02 pm
  7. msg QOTW #8 message posted QOTW #8 One of the most important things to when dealing with a compound is naming its chemical and physi…
    QOTW #8

    One of the most important things to when dealing with a compound is naming its chemical and physical properties. Also, determining what kind of bond it is is very important, which you might have to refer back to your table of contents for that.
    When figuring out the chemical and physical properties of this compound you would use your senses. Senses such as your vision and your sense of smell can be tested. As stated in Mr. Talbots questions TiCl4 is a colorless liquid at room temperature which is one of its physical characteristics. Another physical property is when the substance has light on it then the color darkens and changes to a yellowish tint. TiCl4 also has an acidic smell to the compound. When it comes to chemical properties of the compound TiCl4 is water soluble yet at the same time reacts violently with water. Other properties that can be discovered are its boiling point that is 136 degrees Celsius. Also, whether it is acidic or basic is a property that can be determined.
    To determine the type of bonding going on you must go back and look at your periodic table of elements. Titanium is a metal and is a cation because obviously cats come first and are on the left of the periodic table. Chlorine is a nonmetal and would be considered an anion. Based on this information titanium tetrachloride is an ionic bond. Also, the bonding that occurs in titanium(IV) is ionic due to the type of ions that titanium and chlorine are. All chlorine atoms have a -1 charge and Titanium has a +4 that gives it a charge of zero so it is not an ion.
    TiCl4 has many distinctive physical and chemical properties. Some of those properties are able to be seen, smelled or even tested for, but most importantly detailing properties is a very important process. Also, it is important to know the type of bond in order to see how it reacts with other compounds and chemicals.

    "TITANIUM TETRACHLORIDE." chemicalbook.com. Chemical book. Web. 22 Oct 2013. <http://www.chemicalbook.com/ChemicalProductProperty_EN_CB7854231.htm>.
    "TITANIUM TETRACHLORIDE." goodguide.com. N.p.. Web. 22 Oct 2013. <http://scorecard.goodguide.com/chemical-profiles/html/titanium_tetrachloride.html>.
    7:42 pm
  8. msg QOTW #8 message posted QOTW #8 To determine the chemical and physical properties of Titanium(IV) Chloride, the substance must unde…
    QOTW #8
    To determine the chemical and physical properties of Titanium(IV) Chloride, the substance must undergo a series of tests. First I could find the physical properties. Physical properties are considered anything that “can be observed or measured without changing the composition of matter.” This includes the boiling point, which is how I would begin this process. I would start with finding the boiling point by heating it, where I would discover the boiling point to be 136 C. Next, I would find its melting point (also considered a physical property) using similar circumstances; the result would be -24 C. The density of TiCl4 would be found using the formula Density= Mass/Volume, and it would be 1.73 g/cm cubed. The pH level of the substance would be tested using indicator strips, to determine whether TiCl4 was acidic or basic (the result would be acidic). Knowing the reactivity is an important chemical property. By combining Titanium(IV) Chloride with other elements, it was discovered that it violently reacts with water. Toxicity of TiCl4 is high, and it is known to be dangerously corrosive when it comes in contact with skin tissue, and metals. Exposure by inhalation can cause permanent injury, and in some cases, is fatal.
    The type of bonding in TiCl4 is ionic. This is because Titanium is a metal, and chlorine is a nonmetal, which indicates ionic bonding, as shown on the Periodic Table of Elements.

    Sources:
    "Density of a Liquid." Math and Science Activity Center. EDinformatics, 1999. Web. 22 Oct. 2013.
    <http://www.edinformatics.com/math_science/dens_liquid.htm>.
    Ophardt, Charles E. "What Are Physical Properties and Changes?" Virtual Chembook. Elmhurst College, 2003. Web. 22 Oct. 2013. <http://www.elmhurst.edu/~chm/vchembook/104Aphysprop.html>.
    "Titanium Tetrachloride." Chemical Book. Chemical Book, 2010. Web. 22 Oct. 2013. <http://www.chemicalbook.com/ChemicalProductProperty_EN_CB7854231.htm>.
    7:33 pm

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