Black Dahlia

Black Dahlia

  • Submitted By: lenabena
  • Date Submitted: 11/15/2010 10:47 AM
  • Category: English
  • Words: 1955
  • Page: 8
  • Views: 392

1. My answer should have been (d) because HCl + NaCl-> NaCl +H2O. NaCl is formed when the part of the base bonds with the negative part of the base. NaOH is sodium hydroxide it is a common house hold and lab base the common name is lye. It is a chemical reaction and the products must always equal the reactants in a chemical reaction this in a chemical reaction, this is a acid based reaction, it is called a neutralization process reaction because the properties of the acid and the base are lost or neutralized when they react in most cases the reaction of an acid with a base produces water and salt. NaOH is a base and HCl is an acid when these two are combined they form NaCl and H2O. I guess that is the reason (d) is the best answer and that is all I have to say about that.

2. My answer should have been (c) because in a compound, chemical energy is contained in the bonds of which it forms, because chemical energy is the energy held in the covalent bonds between atoms in a molecule. Every bond has a certain amount of energy. Covalent bonds are formed when the electron molecule clouds of two bonds of the same atoms overlap. Where the clouds overlap they are thicker, and their electric charge is stronger. Both nuclei feel a force of attraction towards this thick electron cloud, and so the two atoms are held together. A group of atoms joined in this way is known as a molecule. The number of covalent bonds which an atom can form depends on how many electrons it has. My answer was (d) and it was wrong because chemical energy is not contained in the movement of electrons. That’s why I changed my answer.

3. My answer should have been (b) because when fluorine forms a binary ionic compound with lithium it makes lithium fluoride not lithium fluorine because Lithium fluoride is a chemical compound of lithium and fluorine. It is a white, inorganic, crystal like, ionic, salt under normal conditions. It carries UV Rays more efficiently than any other compound. Uses include...

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