1 / 8

Counting Atoms

Counting Atoms. Subscripts tell how many atoms of each element are present If formula has parenthesis or number in front , use the distributive property (like in math class) MgCl 2 H 2 O C 6 H 12 O 6. 2H 2 SO 4 Ba(NO 3 ) 2 Mg(C 2 H 3 O 2 ) 2 4NaCO 3. (NH 4 ) 2 O 2Fe(NO 3 ) 2

sharon-dennis
Download Presentation

Counting Atoms

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Counting Atoms • Subscripts tell how many atoms of each element are present • If formula has parenthesis or number in front, use the distributive property (like in math class) MgCl2 H2O C6H12O6

  2. 2H2SO4 Ba(NO3)2 Mg(C2H3O2)2 4NaCO3 (NH4)2O 2Fe(NO3)2 3Be(CN)2 Counting Atoms Practice I

  3. Lattice Energy • Energy associated with strength of bond • More negative the number, the stronger the bond • Stronger bonds have • Smaller atoms • Higher charges

  4. Strong bonds have Smaller atoms & Higher charges NaCl or NaBr BeO or BN Sr3P2 or RbI Al2S3 or B2O3 MgO or Al2O3 Lattice Energy • Li2O or LiBr • KBr or KF • NaCl or MgO • Li3N or LiCl • CaS or Al2S3

  5. Formula Practice I • Aluminum + Oxygen • Sodium + Sulfate • Lithium + Calcium • Calcium + Sulfur • Barium + Chlorine

  6. Formula Practice I • Magnesium + Phosphorus • Lithium + Sulfite • Boron + Oxygen • Carbon + Oxygen • Calcium + Nitrate

More Related