Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Chemical Bonding
| Question | Answer |
|---|---|
| bonding | ~ always involves the valance e- ~elemnents bond to become stable. ~simultaneous attraction or an e- to two nuclei |
| energy changes in bonding | ~forming a bond releases energy. ~to break a bond energy must be absorbed ~potential energy is stored in a bond. |
| ionic bond | ~tranfer of energy ~electroneg. difference is larger. ~occurs between a metal and nonmetal. |
| covalent bond | ~sharemof energy ~electroneg. difference is smaller ~occurs between a nonmetal and nonmetal. |
| metallic bond | ~"sea of mobile e-" (moving) ~occurs in PURE METALS. |
| molecules and compounds | ~only atoms held by covalent bonds are called molecules. ~compounds can be either ionic or covalent bonds. |
| polar covalent bond | ~unequal sharing of electrons because one element has a higher electron than the other. ~occurs between nonmetals. |
| non polar covalent bonding | ~equal sharing or electrons because this bond is between same atoms-(diatomics) ~ Br2, I2, N2, Cl2, H2, O2, F2 |
| ionic configuration | STEPS: 1.how the electron config. for an ion. 2. place the e- config. in brackets and give charge. 3. atoms form ions to get a noble gas config. ( >5 atomic #5 get an octet ) |
| polyatomic ions | (see Table E in Ref. T.) |
| ionic character | is measured by calculating the electroneg. difference. (ignore subscripts, subtract to get the highest number. the higher the e- difference, the more ionic the character) |
| dot diagrams for ionic compounds | ~Begin with e- dot diagrams for the elements in a compound. ~show electron TRANSFER with arrow, show resulting change. ~use many of each atom as needed so stable octet (or duet) is achieved. |
| structural formulas for covalent molecules (non metals only) | ~show the shape of the molecule. ~use a dash to equal one bond (1 pair of shared elecrons). ~how many bonds does each member of groups 14,15,16, and 17 make? |
| molecular shape (non metals only) | bent, pyramidal, tetrahedral, linear. |
| dot diagram for covalent molecules | ~begin with a structural formula for the molecule. ~replace each dash with a dot and X to indicate a pair of shared electrons. ~check to see that each element in the molecule has an octet (or duet, for atomic numbers 1-5) |
| distributing molecular charge (non metals only) | ~draw the structural formula for the molecule. ~take each bond between atoms one at a time. ~the element with the higher electroneg. gets a neg. charge, and the element with the lower electroneg. gets a pos. charge. |
| polar molecules | polar MOLECULES have opposite charges at the ends of asymmetry of charge. |
| S.N.A.P. | symmetrical-nonpolar, asymmetrical-polar |
Created by:
cordovac
Popular Chemistry sets