unit4chemnotes.docx - CHEMISTRY KEY WORDS QUESTIONS...

This preview shows page 1 - 3 out of 8 pages.

CHEMISTRY UNIT 4: Chemical Bonding Date: KEY WORDS/ QUESTIONS/ COMMENTS TYPES OF BONDING Metallic Ionic Covalent Bonds Between Metal & Metal Cations & Anions OR Metal & Nonmetal Nonmetal & Nonmetal Attraction Valence electrons of the metal are mobile The bond is caused by attraction between the valence electron (-) and the metal cations (+) Ionic Bond is the attraction between a positive ion and a negative ion Opposites Attract An ionic compound’s net charge is ZERO Covalent Bond is the attraction between 2 nonmetals willing to share their valence electrons Key Phrases Mobile Electrons Sea of Electrons Delocalized Electrons Ionic Compounds Transfer Electrons Covalent Compounds Share Electrons Properties High Melting and Boiling Points Good Conductors Malleable Ductile Crystalline Structure when in solid state High Melting and Boiling Points Good Conductors only when molten or dissolved in water Low Melting and Boiling Points Poor Conductors Brittle when in a solid state SUMMARY
Image of page 1

Subscribe to view the full document.

CHEMISTRY UNIT 4: Chemical Bonding Date: KEY WORDS/ QUESTIONS/ COMMENTS Electron Dot Diagram Rn H N Mg Al Ar K Br He Fr Octet Rule In forming compounds, atoms tend to achieve the electron configuration of a noble gas Metals – Lose Electrons – Cation (+) Nonmetals – Gain Electrons – Anion (-) KEY WORDS/ QUESTIONS/ COMMENTS SUMMARY Element A # # of e- Electron Configuration Group # # of val. e- Dot M or NM Gain or Lose e- # of e- gained or lost Ion symbol Ion electron configuration Sodium Sulfur Calcium Chlorine Nitrogen Lithium
Image of page 2
CHEMISTRY UNIT 4: Chemical Bonding Date: Writing Ionic Formulas 1. Write the symbols for each ion, cation first. 2. Place the charge of each element above the symbol If there are Roman numeral s, they indicate the cation’s charge.
Image of page 3
You've reached the end of this preview.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern