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Homework Help: Chemistry Questions (alot)

  1. Jan 7, 2006 #1

    What are the differences between an ionic bond and a covalent bond?

    A compound is when two or more _____ chemically bond together.





    Which is an example of a compound whose individual elements are very dangerious, but when combined make a useful compound?

    Table Salt

    Sodium Metal

    Chlorine Gas

    Question 4

    Which is an example of an element that when in it's elemental form, are very dangerious, but when combined with another element, makes a useful compound?

    Sodium metal

    Iron metal

    Table Salt

    Question 5

    Which of the following is the correct formula for the element when in its natural state?




    Question 6
    Lewis proposed that:

    Elements are most stable when they contained eight electrons in thier valence shell.

    Chemical bonds are formed because of electron interaction between the elements.

    Atoms with fewer than eight valence electrons bond by sharing electrons.

    Question 7

    Match the terms with their definitions.

    Match Term Definition
    Ionic bond A) The electrostatic force holding together particles of an ionic compound.
    Ionization B) The amount of energy needed remove electrons from atoms.
    Ionization energy C) The tendency of an atom to gain electrons when forming bonds.
    Electron affinity D) A characteristic of ionic compounds
    Crystal lattice E) The process of removing electrons from atoms to form ions.
  2. jcsd
  3. Jan 8, 2006 #2


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    Science Advisor

    What do you think the answers are?

    Narrow down some of the choices you know are wrong.
    Out of this list, only one thing chemically bond.

    There is only 1 compound in the list, the other two are elements.

    Take a hint from the previous question. Iron metal isnt all that dangerous, and table salt isnt an element.

    For this one, you might just need more experience in seeing the elements written. Hydrogen is a diatomic element, meaning that normally it likes to pair up with itself and form H2 rather than just plain H. Mercury is not like this however.

    I am not totally confident with this answer, but I think it might be the first one. You should double check.

    You can look these definitions up in the back of the book.
  4. Jan 9, 2006 #3
    An ionic bond is a bond between two ions, which are charged atoms (cation is the postively charged one, and the anion is the negatively charged atom). Of course opposites attract, and so an electrostatic attraction between the two charge atoms would induce an ionic bond. The way an atom would become negatively or postively charged is when it either loses or gains an electron. A covalent bond is when two or more atoms share electrons. This way, the valence shells of the two or more atoms are filled (which would be 8 electrons, or 8 e-).
  5. Jan 10, 2006 #4
    It looks to me like someone wanted someone else to do their homework for them.
  6. Jan 12, 2006 #5


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    Staff Emeritus
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    Gold Member

    I agree !

    Megamu : There are rules for posting homework questions here. You can't simply expect to post the questions and have someone tell you the answers. Find the link to the homework rules in my signature.
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