2nd Quarter Chemistry 2012: Polarity of Molecules

Polarity Worksheet

For each of the following pairs of molecules, determine which is most polar and explain your reason for making this choice:

1)        carbon disulfide                   OR                  sulfur difluoride

2)        nitrogen trichloride              OR                  oxygen dichloride

3)        boron trihydride                    OR                  ammonia

4)        chlorine                                 OR                  phosphorus trichloride

5)        silicon dioxide                      OR                  carbon dioxide

6)        CH₄                             OR                  CH₂Cl₂

7)        silicon tetrabromide                        OR                  HCN

8)        nitrogen trifluoride               OR                  phosphorus trifluoride

SPOILER ALERT!!!    SPOILER ALERT!!!    SPOILER ALERT!!!    SPOILER ALERT!!!

ANSWERS: 

1)        carbon disulfide                   OR                  sulfur difluoride

         carbon disulfide is nonpolar

2)        nitrogen trichloride              OR                  oxygen dichloride

            both are polar, but oxygen dichloride is less symmetric than nitrogen trichloride, making it more polar.

3)        boron trihydride                  OR                  ammonia

         boron trihydride is nonpolar.

4)        chlorine                                 OR                  phosphorus trichloride

            chlorine is nonpolar

5)        silicon dioxide                      OR                  carbon dioxide

         It’s a tie, because both are nonpolar

6)        CH₄                             OR                  CH₂Cl₂

            CH₄ is nonpolar

7)        silicon tetrabromide                        OR                  HCN

         silicon tetrabromide is nonpolar

8)        nitrogen trifluoride               OR                  phosphorus trifluoride

            Both are polar and equally symmetric, but the difference in electronegativity between N-F is less than that between P-F

2nd Quarter Chemistry 2012: Naming ionic and Molecular Compounds

Naming Ionic and Covalent Compounds Worksheet

Write the names of the following chemical compounds:

1)        BBr₃ ______________________________________

2)        CaSO₄ ______________________________________

3)        C₂Br₆ ______________________________________

4)        Cr(CO₃)₃ ______________________________________

5)        Ag₃P ______________________________________

6)        IO₂ ______________________________________

7)        VO₂ ______________________________________

8)        PbS ______________________________________

9)        H2 ______________________________________

10)      N₂O₃ ______________________________________

Write the formulas of the following chemical compounds:

11)      tetraphosphorus triselenide ____________________________________

12)      potassium acetate ______________________________________

13)      iron (II) phosphide ______________________________________

14)      disilicon hexabromide ______________________________________

15)      titanium (IV) nitrate ______________________________________

16)      diselenium diiodide ______________________________________

17)      copper (I) phosphate ______________________________________

18)      gallium oxide ______________________________________

19)      tetrasulfur dinitride ______________________________________

20)      oxygen ______________________________________

SPOILER ALERT!!!     SPOILER ALERT!!!     SPOILER ALERT!!!     SPOILER ALERT!!!     SPOILER ALERT!!!

ANSWERS: 

1)        boron tribromide

2)        calcium sulfate

3)        dicarbon hexabromide

4)        chromium (VI) carbonate

5)        silver phosphide

6)        iodine dioxide

7)        vanadium (IV) oxide

8)        lead (II) sulfide

9)        hydrogen

10)      dinitrogen trioxide

Write the formulas of the following chemical compounds:

11)      P₄Se₃

12)      KC_2­­H₃O₂

13)      Fe₃P₂

14)      Si₂Br₆

15)      Ti(NO₃)₄

16)      Se₂I₂

17)      Cu₃PO₄

18)      Ga₂O₃

19)      S₄N₂

20)      O2

2nd Quarter Chemistry 2012: Naming Ionic Compounds

If you HATE naming ionic compounds, you'll LOVE this!

Naming Ionic Compounds Practice Worksheet

Name the following ionic compounds:

1)        NH₄Cl _____________________________________

2)        Fe(NO₃)₃ _____________________________________

3)        TiBr₃ _____________________________________

4)        Cu₃P _____________________________________

5)        SnSe₂ _____________________________________

6)        GaAs _____________________________________

7)        Pb(SO₄)₂ _____________________________________

8)        Be(HCO₃)₂ _____________________________________

9)        Mn₂(SO₃)₃ _____________________________________

10)      Al(CN)₃ _____________________________________

Write the formulas for the following compounds:

11)      chromium (VI) phosphate _____________________________________

12)      vanadium (IV) carbonate _____________________________________

13)      tin (II) nitrite _____________________________________

14)      cobalt (III) oxide _____________________________________

15)      titanium (II) acetate _____________________________________

16)      vanadium (V) sulfide _____________________________________

17)      chromium (III) hydroxide _____________________________________

18)      lithium iodide_____________________________________

19)      lead (II) nitride _____________________________________

20       silver bromide _____________________________________

SPOILER ALERT!!!    SPOILER ALERT!!!    SPOILER ALERT!!!    SPOILER ALERT!!!    SPOILER ALERT!!! 

ANSWERS:

1)        ammonium chloride

2)        iron (III) nitrate

3)        titanium (III) bromide

4)        copper (I) phosphide

5)        tin (IV) selenide

6)        gallium arsenide

7)        lead (IV) sulfate

8)        beryllium bicarbonate

9)        manganese (III) sulfite

10)      aluminum cyanide

11)      Cr(PO₄)₂

12)      V(CO₃)₂

13)      Sn(NO₂)₂

14)      Co₂O₃

15)      Ti(C₂H₃O₂)₂

16)      V₂S₅

17)      Cr(OH)₃

18)      LiI

19)      Pb₃N₂

20)      AgBr