Monday, February 24, 2020

Ionic and Covalent Bonding Essay Example | Topics and Well Written Essays - 500 words

Ionic and Covalent Bonding - Essay Example Formation of ionic bond takes when an electron is transferred from a non metal to metal making the two atoms have partial positive and negative charge hence they attract one another. Reaction between non-metals and metals results into electrons being transferred from the metal to non-metal and, therefore, the metal and non-metal forms ions. On the other hand, the compound formed is called an ionic compound (Gaskell 2008, p. 17). In the above example, sodium atom loses an electron to the chlorine atom. Therefore, sodium atom, therefore, becomes partially positively charged while the chlorine atom becomes partially negatively charged hence an ionic bond is formed (Gaskell 2008, p. 18). Ionic bonds do not have a definite shape while covalent bonds have definite shapes that can be predicted. In addition, covalent bonds can be broken to the original atoms which made the molecule because the atoms are close to one another so as to share electrons (Engel and Reid 2012, p.43). While, ionic bonds are solid, covalent bonds molecules are gaseous or liquids. Compounds that have covalent bonds have a lower melting point than ionic bonds because they have weak van der waals forces that do not require a high amount of energy. On the other hand, ionic compound has higher melting points because their bonds are stable and hence high amount of energy is required to the bonds (Atkins & Paula 2012, p.54). Ionic bonds also form crystalline atoms and in solution or molten state they conduct electricity and are also polar bonds. Therefore, most of them dissolve in water but are insoluble in solvents that are not polar (Silbey et al. 2004 p.30). Ionic bonds are formed between a metal and non-metal atoms. For the formation of the bond to occur, the atoms must have high difference in electron negativity and it is made when the metal atom loses an electron to the non-metal making it

Friday, February 7, 2020

Crisis management japan earthquake Assignment Example | Topics and Well Written Essays - 500 words

Crisis management japan earthquake - Assignment Example The effect of this earthquake was felt in Tokyo that is 300 miles away from the place of the crisis. There were no damages reported after this crisis. The major reason for this is because it was far off the coast. In this section, we are going to focus on the social media. In this era of technology, the social media can be used to manage a crisis or even to make the crisis worse than it already is. Whenever one is dealing with a crisis, there is need to come up with a disaster management team that will look into the possible ways to quell the effects of the crisis. In the 2013 Japan Earthquake among the modes used to reach out to the people was through the social media. Firstly, in the 2013 Japan earthquake, the social media was used to inform the world about the crisis. The social media was used as one of the communication channels used to deal with the crisis. There are people who could not watch the news but with their mobile gadgets, they followed up the whole incidence from wherever they were. The social media was also used to warn people against staying in the areas that had been affected by the crisis. This information was important as a precautionary measure incase another disaster was triggered by the earthquake. The survivors of the disaster also used the social media to tell their experiences during the crisis. The social media was also used to pass messages of encouragement to the victims of the crisis. Through the social media, those people who had to relocate to higher grounds got the assistance from the donations that the social media users raised. As stated above, the social media can be for the good of a crisis as well as an avenue for more disaster. Through face book sharing and re-tweeting options, people who would have been helped were not helped. It came to the attention of the authorities that it was not possible to locate the source of the information. In future it is important that