University:
High School
Course:
High School Chemistry
Academic year:

2022
Views:

379

Pages:

2
Author:

Julio Singleton

ir' АР Chemistry З • Molecules & Compounds Writing Formulas and Naming Compounds Introduction Writing formulas and naming compounds can Ье confusing because there are different types of compounds that follow different rules. Additionally, some compounds (Н20, NНз, СН4 , etc.) simply have соттоп names that must Ье memorized. The two types of compounds we will focus on first are ionic compounds (formed from positive and negative ions) and Ьinary nonmetal compounds (molecular compounds). Later we will add acids. So ... you must recognize the type of compound before you try to name it. [Note: + ion = "cation" and- ion = "anion".] Ionic Formula + ion before - ion ех: NaC! (NH4)S04 Al2 Sз Name of cation + name of anion sodium chloride annnonium sulfate Naming aluminum sulfide Writine: Ionic Formulas NОз· С! 1 + Na Binary Nonmetal usually the less electronegative atom is first СО2 N20 ех: СО Indicate the number (mono, di, tri, and kind of atoms. First element is simply name of element. Second element name ends with "ide" carbon monoxide carbon dioxide dinitrogen monoxide s 2- СОз2- Nз- POi- он- NaCI NaN03 Na2S Nа2СОз NaзN Na,P04 Na0H N!!4CJ NH4N0з (NH4)2S (NН4)2СОз (NH4)зN (NН4)зРО4 Nn10H SnCЪ S11(N0з)2 SnS SnC0з SпзN2 S11з(РО-1)2 Sn(0H)2 Hg2Cl2 Hgl(N0з)2 Hg2S Hg1.CO1 (Hg2)зN2 (!!g2)з(РО4)2 Hg2(0H)2 + AICJэ Л!(NО,)з 3\\1.Sз А12(СОз); AIN AIP04 А,1(0Н)1 Sn4+ SпС1 4 Sл(NОз)з SлS2 Sп(СО,)2 SпзN4 Sлз(РО4)4 Sл(ОН),1 NH4+ + Sn2 нg22+ А\3 11. Namine: lonic Comnounds Cation Cu2 + Anion он Formula Name Сп(О!J)з Clipгic Ьус1шхidс Ван so/- BaS0-1 Ьатiшп sulf'ute NH/ + Ag Cr20/- (Nl!4)2Cr201 anшюnium dicbroшate С2НзОт ЛgС2НзО2 silн:г aceta!e s2- !'е2Sз fc1тic suJJblc Fe3 +