Chapter 9 Study Guide
What is the prefix for 1, 3 and 5 atoms in a binary molecular compound?
1 is mono 3 is tri 5 is penta
What kind of element would have to combine with sulfur to make an ionic compound, a metal, nonmetal or hydrogen?
A metal would have to combine with a nonmetal like sulfur to make an ionic compound.
Which of the following shows correctly an ion pair and the compound formed by the two ions? A) Al³⁺ , O²⁻ , Al₃O₂ B) Fe²⁺ , O²⁻ , Fe₂O₂ C) Ba²⁺ , I¹⁻ , BaI₂
A) Al³⁺ , O²⁻ , Al₃O₂ should be Al₂O₃ B) Fe²⁺ , O²⁻ , Fe₂O₂ should be FeO C) Ba²⁺ , I¹⁻ , BaI₂ is CORRECT
What type of element do acids always begin with?
Acids always begin with hydrogen
Which of the following are ionic compounds? CaO N₂O Na₂SO₄ PCl₃ N₂H₄ LiOH KCl SO₃ NH₄Cl
An ionic compound will always begin with a metal or ammonium (NH₄) so the ionic compounds are: CaO Na₂SO₄ LiOH KCl NH₄Cl
What's the difference between a cation and anion?
Cations are positive and anions are negativ
What is the correct name for the following ions: F ¹⁻ SO₄²⁻ N ³⁻ CN¹⁻ S²⁻ NO₂¹⁻
F ¹⁻ is fluoride SO₄²⁻ is sulfate N ³⁻ is nitride CN¹⁻ is cyanide S²⁻ is sulfide NO₂¹⁻ is nitrite Some of these are polyatomic ions and you can find their names on the polyatomic list. The single atom ions are called monatomic ions and their names ALWAYS end in "ide"
Which of the following compounds has an Fe³⁺ ion? FeS FePO₄ Fe(CN)₂ FeCl₃ Fe₂(SO₄)₃ FeSO₄
FeS Fe is 2+ FePO₄ Fe is 3+ Fe(CN)₂ Fe is 2+ FeCl₃ Fe is 3+ Fe₂(SO₄)₃ Fe is 3+ FeSO₄ Fe is 2+
What is the charge of the cation in each of the following compounds: FeSO₄ CuCl CoPO₄ CuSO₃ CoS CuClO₃
In each of these compounds there is only one of each ion. There would be parentheses around the polyatomic anions if there was more than one. When there is one of each ion they have identical but opposite charges. FeSO₄ the SO₄ ion is 2- so Fe is 2+ CuCl the Cl ion is 1- so Cu is 1+ CoPO₄ the PO₄ ion is 3- so Co is 3+ CuSO₃ the SO₃ ion is 2- so Cu is 2+ CoS the S ion is 2- so Co is 2+ CuClO₃ the ClO₃ ion is 1- so Cu is 1+
What type of element do ionic compounds always begin with?
Ionic compounds always begin with a metal or the ammonium ion
If you encounter a formula and it begins with H or it appears to have a H+ cation in its formula, what do you know about the compound?
It is an acid
What type of element do molecular compounds always begin with?
Molecular compounds always begin with a nonmetal
When naming a binary molecular compound how is the number of each element in the compound indicated?
The number of each element isindicated by the use of prefixes
How many different elements are in binary ionic or binary molecular compounds?
There are always two different elements. Bi means two.
Which of the following are cations? fluoride SO₄²⁻ N₃ ¹⁻ iron (II) S²⁻ K¹⁺ NO₂¹⁻ ammonium
These three are all cations because they have positive charge: iron (II) K¹⁺ ammonium All of the following are anions because they have negative charge: fluoride SO₄²⁻ N₃ ¹⁻ S²⁻ NO₂¹⁻
Acids with just an ic suffix in its name will contain an ion with the suffix ______________
They will -ate ions
What are the correct formulas for the following compounds? hydrobromic acid nitrogen trioxide
hydrobromic acid contains bromide ions (Br¹⁻)⁻ and the formula is HBr Nitrogen trioxide is NO₃
What is the prefix for 2, 4 and 6 atoms in a binary molecular compound?
2 is di 4 is tetra 6 is hexa
Which of the sets of chemical name and formula are correct? A) cobalt(II) oxide, Co₃O₂ B) sodium oxide, Na₂O C) aluminum bromite, AlBr₃
A) cobalt(II) oxide, Co₃O₂ should be CoO B) sodium oxide, Na₂O is CORRECT C) aluminum bromite, AlBr₃ should be Al(BrO₂)₃
What are the correct names of the following compounds? As₂O₅ CsCl H₂C₂O₄ PCl₅ HF Cr₂(SO₃)₃ FeCl₃ MgCO₃
As₂O₅ begins with a nonmetal and is molecular so it's diarsenic pentaoxide CsCl begins with a metal and is ionic so it's cesium chloride H₂C₂O₄ begins with hydrogen and is an acid with an ate ion so it's oxalic acid PCl₅ begins with a nonmetal and is molecular so it's phosphorous pentachloride HF begins with hydrogen and is an acid with an ide ion so it's hydrofluoric acid Cr₂(SO₃)₃ begins with a transition metal and is ionic so it's chromium (III) sulfite FeCl₃ begins with a transition metal and is ionic so it's iron (III) chloride MgCO₃ begins with a metal and is ionic so it's magnesium carbonate
#10 What are the correct formulas for the following compounds? Iron(III) hydroxide oxygen difluoride
Fe(OH)₃ OF₂
What are the correct names of the following compounds? 1. AsO₅ 2. ClO₂ 3. Mg(OH)₂ 4. AgCl 5. CrPO₄ 6. Hg₂I₂ 7. NiBr₂ 8. Cu₃PO₄
1. AsO₅ begins with a nonmetal and is molecular so it's arsenic pentaoxide 2. ClO₂ begins with a nonmetal and is molecular so it's chlorine dioxide 3. Mg(OH)₂ begins with a metal and is ionic so it's magnesium hydroxide 4. AgCl begins with a transition metal that DOES NOT need a Roman numeral and is ionic so it's silver chloride 5. CrPO₄ begins with a transition metal and is ionic so it's chromium (III) phosphate 6. Hg₂I₂ begins with a transition metal AND Hg₂ is a polyatomic ion so it's mercury (I) iodide 7. NiBr₂ begins with a transition metal and is ionic so it's nickel (II) bromide 8. Cu₃PO₄ begins with a transition metal and is ionic so it's copper (I) phosphate
What are the correct formulas of the following compounds? 1. Boron trifluoride 2. Oxalic acid 3. Hydrofluoric acid 4. Calcium carbonate 5. Copper (I) phosphate 6. Sulfur trioxide 7. Sodium acetate 8. Selenium dioxide
1. Boron trifluoride is BF₃ 2. Oxalic acid is H₂C₂O₄ 3. Hydrofluoric acid is HF 4. Calcium carbonate is CaCO₃ 5. Copper (I) phosphate is Cu₃PO₄ 6. Sulfur trioxide is SO₃ 7. Sodium acetate is NaCH₃COO 8. Selenium dioxide is SeO₂
What are the correct names of the following compounds? 1. CS₂ 2. NaCH₃COO 3. HCl 4. CoS 5. CuClO₄ 6. FeC₂O₄ 7. Mg₃(PO₄)₂ 8. NO
1. CS₂ begins with a nonmetal and is molecular so it's carbon disulfide 2. NaCH₃COO begins with a metal and is ionic so it's sodium acetate 3. HCl begins with hydrogen and is an acid with an ide ion so it's hydrochloric acid 4. CoS begins with a transition metal and is ionic so it's cobalt (II) sulfide 5. CuClO₄ begins with a transition metal and is ionic so it's copper (I) perchlorate 6. FeC₂O₄ begins with a transition metal and is ionic so it's iron (II) oxalate 7. Mg₃(PO₄)₂ begins with a metal and is ionic so it's magnesium phosphate 8. NO begins with a nonmetal and is molecular so it's nitrogen monoxide
What are the correct names of the following compounds? 1. P₂O₅ 2. Na₂O₂ 3. HClO₄ 4. KNO₃ 5. H₂CO₃ 6. CCl₄ 7. Co₂(CrO₄)₃ 8. HI
1. P₂O₅ begins with a nonmetal and is molecular so it's diphosphorous pentaoxide 2. Na₂O₂ begins with a metal and is ionic so it's sodium peroxide 3. HClO₄ begins with hydrogen and is an acid with an ate ion (ClO₄ is perchlorate) so it's perchloric acid 4. KNO₃ begins with a metal and is ionic so it's potassium nitrate 5. H₂CO₃ begins with hydrogen and is an acid with an ate ion (CO₃ is carbonate) so it's carbonic acid 6. CCl₄ begins with a nonmetal and is molecular so it's carbon tetrachloride 7. Co₂(CrO₄)₃ begins with a transition metal and is ionic so it's cobalt (III) chromate 8. HI begins with hydrogen and is an acid with an ide ion so it's hydroiodic acid
What are the correct formulas for the following compounds? nitric acid aluminum carbonate
Nitric acid contains nitrate ion so it is HNO₃ Aluminum carbonate contains aluminum ions (Al³⁺) and carbonate ions (CO₃²⁻) and the formula is Al₂(CO₃)₃
Acids with an ous suffix in its name will contain an ion with the suffix ___________
They will -ite ions
Many transition metals have more than one possible charge. How is this charge indicated when you name one of these ions?
Transition metals with varying ionic charges are named by including a Roman numeral after the name that is the same as the charge. For example iron with a 2+ charge is called iron (II) and iron with a 3+ charge is called iron (III)
Binary molecular compounds are made up of: a.) a metal and a nonmetal b.) two nonmetals c.) two metals
b.) Binary molecular compounds are made up of two nonmetals
Which of the following is the correct name of the element, symbol of the ion and name of the ion? oxygen, O²⁺, oxide ion chromium, Cr²⁺, chromium ion silver, Ag¹⁺, silver ion Nitrogen, N³⁻, nitrate ion
oxygen, O²⁺, oxide ion (should have 2- charge) chromium, Cr²⁺, chromium ion (should have Roman numeral II in the name) silver, Ag¹⁺, silver ion THIS IS THE CORRECT ANSWER Nitrogen, N³⁻, nitrate ion (the name is nitride, not nitrate)
What are the correct formulas of the following compounds? 1. Carbon monoxide 2. Hydrocyanic acid 3. Sulfur hexafluoride 4. Mercury (II) iodide 5. Dinitrogen monoxide 6. Magnesium oxide 7. Phosphorous pentachloride 8. Acetic acid
1. Carbon monoxide is CO 2. Hydrocyanic acid is HCN 3. Sulfur hexafluoride is SF₆ 4. Mercury (II) iodide is HgI₂ 5. Dinitrogen monoxide is N₂O 6. Magnesium oxide is MgO 7. Phosphorous pentachloride is PCl₅ 8. Acetic acid is HCH₃COO
Acids with a hydro prefix in its name will contain an ion with the suffix ___________
They will -ide ions
What are the correct formulas of the following compounds? 1. Dinitrogen pentaoxide 2. Sodium hydrogen carbonate 3. Iron (II) hydroxide 4. Phosphorous trichloride 5. Sodium sulfite 6. Nitrous acid 7. Nitrogen dioxide 8. Barium chlorate
1. Dinitrogen pentaoxide is N₂O₅ 2. Sodium hydrogen carbonate is NaHCO₃ 3. Iron (II) hydroxide is Fe(OH)₂ 4. Phosphorous trichloride is PCl₃ 5. Sodium sulfite is Na₂SO₃ 6. Nitrous acid is HNO₂ 7. Nitrogen dioxide is NO₂ 8. Barium chlorate is Ba(ClO₃)₂
