Unit II Note pack, pages 10-14 Chemistry Section 6.4 Ionic Compounds & Section 6.5 Molecular Compounds and Acids Unit II Note pack, pages 10-14

Ionic Compounds Writing Formulas for Binary Ionic Compounds 1. What are Binary Ionic Compounds? Binary compounds have just 2 elements. Binary ionic compounds have 2 elements that are from opposite sides of the table, a cation and an anion. (metal) (nonmetal)

Ionic Compounds Writing Formulas for Binary Ionic Compounds 2. What are the “rules” for writing Binary Ionic Compounds? Write the metal (positive) ion first Write the nonmetal (negative) ion last The net charge for the compound must add up to zero (total positive + total negative = 0) Use subscripts to indicate how many of each ion you need to “balance” the charge. CrissCross Method

Ionic Compounds Practice Writing Formulas for Binary Ionic Compounds Write the formula for the binary ionic compound formed between magnesium and chlorine. Then NAME IT.

Ionic Compounds Practice Writing Formulas for Binary Ionic Compounds Write the formula for the binary ionic compound formed between magnesium and chlorine. Then NAME IT. Mg +2 + Cl-  MgCl2 Magnesium Chloride

Ionic Compounds Practice Writing Formulas for Binary Ionic Compounds Write the formula for the binary ionic compound formed between magnesium and chlorine. Then NAME IT. Mg +2 + Cl-  MgCl2 Magnesium Chloride Write the formula for the binary ionic compound formed between sodium and oxygen. Then NAME IT.

Ionic Compounds Practice Writing Formulas for Binary Ionic Compounds Write the formula for the binary ionic compound formed between magnesium and chlorine. Then NAME IT. Mg +2 + Cl-  MgCl2 Magnesium Chloride Write the formula for the binary ionic compound formed between sodium and oxygen. Then NAME IT. Na+ + O-2  Na2O Sodium Oxide

Ionic Compounds Practice Writing Formulas for Binary Ionic Compounds (pg. 10) Write the formula for the binary ionic compound between aluminum and sulfur, and NAME IT.

Ionic Compounds Practice Writing Formulas for Binary Ionic Compounds (pg. 10) Write the formula for the binary ionic compound between aluminum and sulfur, and NAME IT. Al+3 + S-2  Al2S3 Aluminum sulfide

Ionic Compounds Practice Writing Formulas for Binary Ionic Compounds (pg. 10) Write the formula for the binary ionic compound between aluminum and sulfur, and NAME IT. Al+3 + S-2  Al2S3 Aluminum sulfide Write the formula for the binary ionic compound between iron (III) and oxygen, and NAME IT.

Ionic Compounds Fe+3 + O-2  Fe2O3 Iron (III) oxide Practice Writing Formulas for Binary Ionic Compounds (pg. 10) Write the formula for the binary ionic compound between aluminum and sulfur, and NAME IT. Al+3 + S-2  Al2S3 Aluminum sulfide Write the formula for the binary ionic compound between iron (III) and oxygen, and NAME IT. Fe+3 + O-2  Fe2O3 Iron (III) oxide

Ionic Compounds Practice Writing Formulas for Binary Ionic Compounds (pg. 10) Write the formula for the binary ionic compound between aluminum and sulfur, and NAME IT. Al+3 + S-2  Al2S3 Aluminum sulfide Write the formula for the binary ionic compound between iron (III) and oxygen, and NAME IT. Fe+3 + O-2  Fe2O3 Iron (III) oxide Write the formula for the binary ionic compound between calcium and sulfur, and NAME IT.

Ionic Compounds Ca+2 + S-2  CaS Calcium sulfide Practice Writing Formulas for Binary Ionic Compounds (pg. 10) Write the formula for the binary ionic compound between aluminum and sulfur, and NAME IT. Al+3 + S-2  Al2S3 Aluminum sulfide Write the formula for the binary ionic compound between iron (III) and oxygen, and NAME IT. Fe+3 + O-2  Fe2O3 Iron (III) oxide Write the formula for the binary ionic compound between calcium and sulfur, and NAME IT. Ca+2 + S-2  CaS Calcium sulfide

Please do the Practice Problems in the Note Pack, pg. 11.

Polyatomic Ions (pg 11) What is a polyatomic ion? a tightly bound group of atoms that behaves as a unit and carries a charge B. What endings to polyatomic ions receive when naming them? most polyatomic ions receive endings of either –ite or –ate.

Polyatomic ions C. There are 3 important exceptions (to the end of their names), they are: Ammonium cation (NH4+) Two polyatomic ions end in –ide; cyanide (CN-) and hydroxide (OH-)

Polyatomic Ions For “D”, see Chart 6.4 Example: Ammonium NH4+

With the person next to you, please do the “Reminder” at the top of page 12.

Ternary Ionic Compounds Define ternary ionic compounds: A compound that contains atoms of three, or more, different elements Remember, they are still just two ions, and all rules from before still apply. Write the formula for lithium nitrate, a ternary compound.

Ternary Ionic Compounds Define ternary ionic compounds: A compound that contains atoms of three, or more, different elements Remember, they are still just two ions, and all rules from before still apply. Write the formula for lithium nitrate, a ternary compound. Li + + NO3- 

Ternary Ionic Compounds Define ternary ionic compounds: A compound that contains atoms of three, or more, different elements Remember, they are still just two ions, and all rules from before still apply. Write the formula for lithium nitrate, a ternary compound. Li + + NO3-  LiNO3

Ternary Ionic Compounds C. Sometimes, we need to take more than one polyatomic ion to balance the charge to 0. If this is happens, place the polyatomic ion in parenthesis and the subscript outside of the parenthesis. D. Write the formula for aluminum carbonate: Al+3 + CO3-2  E. Write the formula for ammonium sulfate: F. Write the formula for calcium phosphate:

Ternary Ionic Compounds C. Sometimes, we need to take more than one polyatomic ion to balance the charge to 0. If this is happens, place the polyatomic ion in parenthesis and the subscript outside of the parenthesis. D. Write the formula for aluminum carbonate: Al+3 + CO3-2  Al2(CO3)3 E. Write the formula for ammonium sulfate: F. Write the formula for calcium phosphate:

Ternary Ionic Compounds C. Sometimes, we need to take more than one polyatomic ion to balance the charge to 0. If this is happens, place the polyatomic ion in parenthesis and the subscript outside of the parenthesis. D. Write the formula for aluminum carbonate: Al+3 + CO3-2  Al2(CO3)3 E. Write the formula for ammonium sulfate: NH4+ + SO4-2  F. Write the formula for calcium phosphate:

Ternary Ionic Compounds C. Sometimes, we need to take more than one polyatomic ion to balance the charge to 0. If this is happens, place the polyatomic ion in parenthesis and the subscript outside of the parenthesis. D. Write the formula for aluminum carbonate: Al+3 + CO3-2  Al2(CO3)3 E. Write the formula for ammonium sulfate: NH4+ + SO4-2  (NH4)2SO4 F. Write the formula for calcium phosphate:

Ternary Ionic Compounds C. Sometimes, we need to take more than one polyatomic ion to balance the charge to 0. If this is happens, place the polyatomic ion in parenthesis and the subscript outside of the parenthesis. D. Write the formula for aluminum carbonate: Al+3 + CO3-2  Al2(CO3)3 E. Write the formula for ammonium sulfate: NH4+ + SO4-2  (NH4)2SO4 F. Write the formula for calcium phosphate: Ca+2 + PO4-3 

Ternary Ionic Compounds C. Sometimes, we need to take more than one polyatomic ion to balance the charge to 0. If this is happens, place the polyatomic ion in parenthesis and the subscript outside of the parenthesis. D. Write the formula for aluminum carbonate: Al+3 + CO3-2  Al2(CO3)3 E. Write the formula for ammonium sulfate: NH4+ + SO4-2  (NH4)2SO4 F. Write the formula for calcium phosphate: Ca+2 + PO4-3  Ca3(PO4)2

Ternary Ionic Compounds Do this one on your own, and compare with a partner. Write the formula for beryllium carbonate.

Ternary Ionic Compounds Do this one on your own, and compare with a partner. Write the formula for beryllium carbonate. Be+2 + CO3-2  BeCO3 Beryllium ion + carbonate  beryllium carbonate

Practice Problems, pg. 10 Write the formulas for compounds formed AND name the compound from these pairs of ions: NH4+1, SO32- Calcium ion, phosphate ion

(NH4)2SO3 Ammonium Sulfite Practice Problems, pg. 11 Write the formulas for compounds formed AND name the compound from these pairs of ions: NH4+1, SO32- (NH4)2SO3 Ammonium Sulfite Calcium ion, phosphate ion

(NH4)2SO3 Ammonium Sulfite Practice Problems, pg. 11 Write the formulas for compounds formed AND name the compound from these pairs of ions: NH4+1, SO32- (NH4)2SO3 Ammonium Sulfite Calcium ion, phosphate ion Ca+2 + PO4-3  Ca3(PO4)2 Calcium phosphate

Practice Problems, pg. 11 Write the formulas for compounds formed AND name the compound from these pairs of ions: Al3+, NO3-1 d. Potassium ion, chromate ion

Al(NO3)3 Aluminum Nitrate Practice Problems, pg. 11 Write the formulas for compounds formed AND name the compound from these pairs of ions: Al3+, NO3-1 Al(NO3)3 Aluminum Nitrate d. Potassium ion, chromate ion

Al(NO3)3 Aluminum Nitrate Practice Problems, pg. 11 Write the formulas for compounds formed AND name the compound from these pairs of ions: Al3+, NO3-1 Al(NO3)3 Aluminum Nitrate d. Potassium ion, chromate ion K+ + CrO4-2  K2CrO4 Potassium chromate

Practice Problems, pg. 11 Write formulas for these compounds Lithium hydrogen sulfate __________ Chromium (III) nitrite ______________ Mercury (II) bromide ______________ Ammonium dichromate ___________

Practice Problems, pg. 11 Write formulas for these compounds Lithium hydrogen sulfate _LiHSO4__ Chromium (III) nitrite _____________ Mercury (II) bromide ______________ Ammonium dichromate ___________

Practice Problems, pg. 11 Write formulas for these compounds Lithium hydrogen sulfate _LiHSO4___ Chromium (III) nitrite __Cr(NO2)3_____ Mercury (II) bromide _______________ Ammonium dichromate ____________

Practice Problems, pg. 11 Write formulas for these compounds Lithium hydrogen sulfate _LiHSO4__ Chromium (III) nitrite __Cr(NO2)3__ Mercury (II) bromide __HgBr2___ Ammonium dichromate _(NH4)2Cr2O7_

Section 6.5 Molecular Compounds and Acids (pg. 12) Binary Molecular Compounds What is a binary molecular compound? A compound composed of 2 nonmetallic elements.

Section 6.5 Molecular Compounds and Acids Binary Molecular Compounds We use prefixes when naming binary molecular compounds: Refer to Table 6.5 and fill in the following: Number Prefix Number Prefix 6 7 8 9 10

Section 6.5 Molecular Compounds and Acids Binary Molecular Compounds We use prefixes when naming binary molecular compounds: Refer to Table 6.5 and fill in the following: Number Prefix Number Prefix mono- 6 hexa- di- 7 hepta- tri- 8 octa- tetra- 9 nona- penta- 10 deca-

Section 6.5 Molecular Compounds and Acids Binary Molecular Compounds How do we name binary molecular compounds? Say the name of the first element, say the name of the second element, ending in ‘-ide’, and put the appropriate prefix in to indicate how many of each element there are in the formula: If the prefix for the first element in a binary molecular compound is mono-, it may be dropped. However, it must be said if it is for the second element. Don’t reduce the subscripts (like you did for binary ionic compounds)

Name these binary molecular compounds. N2O -- ___________________ PCl3 -- ___________________ SF6 -- _____________________ OF2 -- _____________________ Cl2O8 -- ___________________ SO3 -- ____________________

Name these binary molecular compounds. N2O -- _dinitrogen monoxide__ PCl3 -- ______________________ SF6 -- ________________________ OF2 -- _______________________ Cl2O8 -- _____________________ SO3 -- ______________________

Name these binary molecular compounds. N2O -- _dinitrogen monoxide__ PCl3 -- _phosphorus trichloride_ SF6 -- ______________________ OF2 -- _____________________ Cl2O8 -- ____________________ SO3 -- ____________________

Name these binary molecular compounds. N2O -- _dinitrogen monoxide__ PCl3 -- _phosphorus trichloride_ SF6 -- _sulfur hexafluoride___ OF2 -- _____________________ Cl2O8 -- _____________________ SO3 -- ____________________

Name these binary molecular compounds. N2O -- _dinitrogen monoxide__ PCl3 -- _phosphorus trichloride_ SF6 -- _sulfur hexafluoride___ OF2 -- _oxygen difluoride___ Cl2O8 -- _dichlorine octoxide__ SO3 -- _sulfur trioxide___

Write the formulas for the following binary molecular compounds. Nitrogen trifluoride ________________ Disulfur dichloride ________________ Dinitrogen tetraoxide _______________ Octoxygen dichloride _______________ Trinitrogen pentoxide _______________

Write the formulas for the following binary molecular compounds. Nitrogen trifluoride ___NF3__________ Disulfur dichloride ________________ Dinitrogen tetraoxide ______________ Octoxygen dichloride _______________ Trinitrogen pentoxide _______________

Write the formulas for the following binary molecular compounds. Nitrogen trifluoride ___NF3__________ Disulfur dichloride ___S2Cl2________ Dinitrogen tetraoxide ______________ Octoxygen dichloride ______________ Trinitrogen pentoxide ______________

Write the formulas for the following binary molecular compounds. Nitrogen trifluoride ___NF3__________ Disulfur dichloride ___S2Cl2________ Dinitrogen tetraoxide __N2O4________ Octoxygen dichloride _______________ Trinitrogen pentoxide ______________

Write the formulas for the following binary molecular compounds. Nitrogen trifluoride ___NF3__________ Disulfur dichloride ___S2Cl2________ Dinitrogen tetraoxide __N2O4________ Octoxygen dichloride __O8Cl2_______ Trinitrogen pentoxide __N3O5_______

Naming Acids (pg. 14, top) What are acids? Acids are compounds that produce H ions (H+) when dissolved in water B. Write the chart that explains how to name acids: (next)

Naming acids

Name the following acids Begin by finding the name of the anion (not the H) from the periodic Table or Table 6.4, then follow the naming flow chart. HClO =___________________________ ________________________________ HClO4 = _________________________ ________________________________

Name the following acids Begin by finding the name of the anion (not the H) from the periodic Table or Table 6.4, then follow the naming flow chart. HClO = ClO is hypochlorite _so the name for this acid is… ______________ HClO4 =_________________________ _______________________________

Name the following acids Begin by finding the name of the anion (not the H) from the periodic Table or Table 6.4, then follow the naming flow chart. HClO = ClO is hypochlorite _so the name for this acid is hypochlorous acid HClO4 = _________________________ ________________________________

Name the following acids Begin by finding the name of the anion (not the H) from the periodic Table or Table 6.4, then follow the naming flow chart. HClO = ClO is hypochlorite _so the name for this acid is hypochlorous acid HClO4 = ClO4 is perchlorate, so the name for this acid is…______________

Name the following acids Begin by finding the name of the anion (not the H) from the periodic Table or Table 6.4, then follow the naming flow chart. HClO = ClO is hypochlorite _so the name for this acid is hypochlorous acid HClO4 = ClO4 is perchlorate, so the name for this acid is perchloric acid

Practice naming the following acids: HCl = _________________________ HClO3 = _______________________ HClO2 = _______________________ HClO = ________________________ HClO4 = _______________________ H2S = ____________________ H2SO3 = ___________________ H2SO4 = ___________________ HC2H3O2 = ____________________

Practice naming the following acids: HCl = ____Hydrochloric acid__________ HClO3 = ___________________________ HClO2 = ___________________________ HClO = ____________________________ HClO4 = ___________________________ H2S = _____________________________ H2SO3 = ___________________________ H2SO4 = ___________________________ HC2H3O2 = _________________________

Practice naming the following acids: HCl = ____Hydrochloric acid__________ HClO3 = ____Chloric acid_____________ HClO2 = ___________________________ HClO = ____________________________ HClO4 = ___________________________ H2S = _____________________________ H2SO3 = ___________________________ H2SO4 = ___________________________ HC2H3O2 = _________________________

Practice naming the following acids: HCl = ____Hydrochloric acid__________ HClO3 = ____Chloric acid_____________ HClO2 = ____Chlorous Acid ___________ HClO = ____________________________ HClO4 = ____________________________ H2S = ______________________________ H2SO3 = ____________________________ H2SO4 = ____________________________ HC2H3O2 = __________________________

Practice naming the following acids: HCl = ____Hydrochloric acid__________ HClO3 = ____Chloric acid_____________ HClO2 = ____Chlorous Acid ___________ HClO = ____Hypochlorous acid _______ HClO4 = ___________________________ H2S = _____________________________ H2SO3 = ___________________________ H2SO4 = ___________________________ HC2H3O2 = _________________________

Practice naming the following acids: HCl = ____Hydrochloric acid__________ HClO3 = __Chloric acid_____________ HClO2 = __Chlorous Acid __________ HClO = ___Hypochlorous acid _______ HClO4 = __Perchloric acid __________ H2S = _____________________________ H2SO3 = ___________________________ H2SO4 = ___________________________ HC2H3O2 = _________________________

Practice naming the following acids: HCl = ____Hydrochloric acid__________ HClO3 = ____Chloric acid_____________ HClO2 = ____Chlorous Acid ___________ HClO = ____Hypochlorous acid ________ HClO4 = ___Perchloric acid __________ H2S = _____Hydrosulfuric acid _________ H2SO3 = ____________________________ H2SO4 = ____________________________ HC2H3O2 = __________________________

Practice naming the following acids: HCl = ____Hydrochloric acid__________ HClO3 = ____Chloric acid_____________ HClO2 = ____Chlorous Acid ______________ HClO = ____Hypochlorous acid ________ HClO4 = ___Perchloric acid __________ H2S = _____Hydrosulfuric acid _________ H2SO3 = ___Sulfurous acid __________ H2SO4 = ____Sulfuric acid_____ HC2H3O2 = ___Acetic acid_________

Write the formula for the following acids: Nitric acid ______________________ Hydronitric acid _________________ Nitrous acid ____________________ Hydrocyanic acid ________________ Phosphoric acid _________________ Hydrobromic acid ________________ Acetic acid _____________________

Write the formula for the following acids: Nitric acid _____HNO3_____________ Hydronitric acid __________________ Nitrous acid _____________________ Hydrocyanic acid _________________ Phosphoric acid __________________ Hydrobromic acid _________________ Acetic acid ______________________ Nitric acid _______________________

Write the formula for the following acids: Nitric acid _____HNO3______________ Hydronitric acid _H3N______________ Nitrous acid ______________________ Hydrocyanic acid __________________ Phosphoric acid ___________________ Hydrobromic acid __________________ Acetic acid _______________________ Nitric acid ________________________

Write the formula for the following acids: Nitric acid _____HNO3_____________ Hydronitric acid _H3N______________ Nitrous acid __HNO2_______________ Hydrocyanic acid _________________ Phosphoric acid ___________________ Hydrobromic acid __________________ Acetic acid _______________________ Nitric acid _______________________

Write the formula for the following acids: Nitric acid _____HNO3______________ Hydronitric acid _H3N_______________ Nitrous acid __HNO2_______________ Hydrocyanic acid ___HCN___________ Phosphoric acid ___________________ Hydrobromic acid __________________ Acetic acid _______________________ Nitric acid ________________________

Write the formula for the following acids: Nitric acid _____HNO3______________ Hydronitric acid _H3N_______________ Nitrous acid __HNO2________________ Hydrocyanic acid ___HCN___________ Phosphoric acid __H3PO4____________ Hydrobromic acid __________________ Acetic acid _______________________ Nitric acid ________________________

Write the formula for the following acids: Nitric acid _____HNO3______________ Hydronitric acid _HN3_______________ Nitrous acid __HNO2______________ Hydrocyanic acid ___HCN___________ Phosphoric acid __H3PO4____________ Hydrobromic acid _HBr______________ Acetic acid _______________________ Nitric acid ________________________

Write the formula for the following acids: Nitric acid _____HNO3______________ Hydronitric acid _HN3_______________ Nitrous acid __HNO2________________ Hydrocyanic acid ___HCN___________ Phosphoric acid __H3PO4____________ Hydrobromic acid _HBr______________ Acetic acid __HC2H3O2____________ Nitric acid ______________________

Write the formula for the following acids: Nitric acid _____HNO3______________ Hydronitric acid _HN3_______________ Nitrous acid __HNO2________________ Hydrocyanic acid ___HCN___________ Phosphoric acid __H3PO4____________ Hydrobromic acid _HBr______________ Acetic acid __HC2H3O2____________ Nitric acid ___HNO3_______________