Chapter 2 topics 4,5,6

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Chapter 2 topics 4,5,6
2014-01-27 15:01:50

chemistry for ANP
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  1. Formed when two or more atoms combine
  2. Depicts the numbers and kinds of atoms in a molecule (ex. CO2 has 1 carbon atom, and 2 oxygen atoms)
    Molecular Formula
  3. Shows how atoms bond and are arranged in a molecule (ex. CO2 is O=C=O)
    structural Formula
  4. Formed when atoms of DIFFERENT elements combine
  5. When atoms combine to make molecules or compounds they form these
  6. Electrons of a atom are found in these
    Energy or Electron Shells
  7. This states that the outer shell attempts to be filled by 8 electrons
    octet rule
  8. These types of atoms are NOT reactive because there outermost shell is full
    Inert atoms
  9. Atoms that gain or lose electrons become electrically charged are called
  10. ions that have become POSITIVELY charged due to LOSING electron(s)
  11. atoms that have become NEGATIVELY charged due to GAINING electron(s)
  12. Ions form this kind of bond
    Ionic Bonds
  13. When opposite charges attract they form this kind of bond (anion- and cation +)
    Ionic Bond
  14. this bond is formed by the attraction of a posititive hydrogen end of a polar molecule and a negative oxygen end of another polar molecule
    Hydrogen bond
  15. special molecule in which the electrons are not shared equally. The molecule has a slight positive charge at one end and a slight negative charge at the other.
    Polar Molecule
  16. Part of the chemical reaction where the SUBSTANCES ARE BEING CHANGED
  17. Part of a chemical reaction where the substances ARE FORMED at the end of the chemical reaction
  18. Molecules that influence the rate of the chemical reaction but are not consumed during the process
  19. When two or more atoms, ions, or molecules bond to form a MORE COMPLEX structure (CO2 + H2O > H2CO3 )
    Synthesis Rx
  20. Occurs when the parts of TWO DIFFERENT kinds of molecules TRADE POSITIONS
    Exchange Rx
  21. Occurs when the BONDS of a reactant molecule break to form SIMPLER MOLECULES
    Decomposition Rx
  22. most common type of reaction in living organism...occurs when products can change back to the reactant(s)
    Reversible Rx
  23. What happens to the charge of an atom if it either gains or loses an electron?
    It becomes a Ion whether it be a Cation + or an Anion -
  24. Why do atoms combine with other atoms?
    To complete the octet rule making them more stable or inert or to create molecules and form bonds
  25. The outer electron shell which may or may not be full contains the electrons called
    Valance electrons
  26. The three types of Chemical bonds are
    Hydrogen, Ionic, and Covalent
  27. Four types of chemical reactions are
    Synthesis Rx, decomposition Rx, Exchange Rx, and Reversible Rx