Chemistry Assignment list 2 (Ch



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Alist – Unit 5 (Chap 7 from the book) NAME _______________

Monday Sept 24 Begin Lecture/ Ionic bonds/ charge rules

Practice problems – Binary ionic w/o transitions

Tuesday Sept 25 Practice naming Binary ionic with transition metals

Wednesday Sept 26 Practice Naming with polyatomics ions

Thursday Sept 27 Minilab

Friday Sept 28 (Teacher absent) Worktime / Make flash cards for polyatomics

Monday Oct 1 Day 1 Analytical lab

Tuesday Oct 2 Quiz on naming / Day 2 Analytical lab

Wednesday Oct 3 Worktime / Work on choices

Thursday Oct 4 Lab Report due Review / Create flow chart for nomenclature

Friday Oct 5 TEST – NB due

Essential questions/Key questions:

EQ How are compounds named and formulas written?

KQ What are the ionic charges of any element on the table?

EQ Why are valence electrons related to the nature of the chemical bond?

KQ How does an ionic bond compare to a covalent bond?

GA performance standard SC1

c. Predict formulas for stable ionic compounds based on the balance of charges.

d. Use IUPAC nomenclature for chemical names & formulas for ionic compounds.

Checklist of stuff to know:

A) Explain how an ionic bond forms.

B) Know the charges (aka 0xidation number) as well as the exceptions for each element.

C) What are the rules for naming and writing formulas for ionic compounds?

D) Explain the different characteristics of metals/nonmetals/metalloids and the pattern on the periodic table.

E) Know the names for each of the groups on the periodic table.

Vocabulary

Chemical formula, Compound, Cation, Anion, Ionic bond,

Polyatomic ion, monatomic ion, valence electron, acid

Classwork/homework – all due on Wednesday, Oct 11

Graphic org for groups

Note guide / Handout for Binary ionic

PI flashcards

Handout for Ternary ionic/ acids

Flowchart for writing formulas of ionic compounds

+ choose 2 from the following:

1) Draw a one panel cartoon of a cation bonding with an anion in the correct ratio. Show the transfer of electrons. Use a minimum of 4 colors and write a caption. It doesn’t have to be funny, although I do like to laugh.

2) Write 2 acrostic poems. One needs to include the word cation and the other needs to include the word anion. Phrases in your poems should describe cations and anions.

3) Write a one page paper on the history of the IUPAC. What is their most recent contribution to chemistry? Include 2 references minimum. Wikipedia is ok with me for one of your references, but you may not access it from school.

4) Write a minimum 3 verse song + chorus that includes all nine vocabulary words. You may perform if you like, but you don’t have to get credit. Turn in your lyrics.

5) Choose one of the groups on the periodic table to research. Create a flyer in Publisher that includes several facts about the group you chose. Include similar traits of each element in the group, uses for each element in the group and any exceptions. Include a minimum of three graphics/pictures and 2 references. You may email it to me if you can’t print.

6) Teach the naming system to your parent/guardian. Have them explain the formula for any Binary Ionic Compound in 4 or 5 sentences Below his/her paragraph, he/she should write, “My child understands how compounds are named and can explain it to me.” Have them sign it and include this with your notebook.

Lab reports are due separately on Thursday Oct 4 at the beginning of your class period.

Chemical Nomenclature and Formula Writing

Chemical nomenclature is the system that chemists use to identify and name compounds. Compounds can have two types of names: systematic names (names that identify the chemical composition of a chemical compound) and common names (traditional names based on historical discovery or reactivity behavior). For example, N2O has both a systematic name (dinitrogen monoxide) and a common name (laughing gas).

If every substance were assigned a common name, chemists would be expected to memorize over nine million names! This is why chemists generally prefer systematic names for identifying compounds. The International Union of Pure and Applied Chemistry (IUPAC, see ) was founded in 1921 to provide a system of chemical nomenclature for scientists. IUPAC nomenclature rules can provide valuable structural and reactivity information. On the other hand, most people would be hard pressed to call dihydrogen monoxide by any other name but water, so both types of nomenclature have their place.

Nomenclature leads naturally to formula writing. Compounds exist in distinct combinations of elements, and knowing the proper combinations of elements is essential in chemistry. We expect sodium chloride to be NaCl and not Na2Cl or NaCl2; knowing which combination or combinations exist in nature is crucial.

Binary ionic compounds – include one cation and one anion – named systematically

Ternary ionic compounds – include at least one polyatomic ion and another ion

Binary Covalent compounds – include 2 nonmetals – named with Greek prefixes (next unit)

Acids – special case most compounds that start with hydrogen (next unit)

Organic compounds – include carbon – organic naming system (later in the year)

All compounds have an overall charge of ________.

Examples: Binary ionics:

Examples: Binary ionics w/ transition metals:

Examples: Ternary ionics:

Binary Ionic compounds practice

NAME cation anion chemical formula

1) Lithium bromide _____ ______ ___________________

2) Magnesium fluoride _____ ______ ___________________

3) Potassium oxide _____ ______ ___________________

4) Calcium sulfide _____ ______ ___________________

5) Aluminum iodide _____ ______ ___________________

6) Barium bromide _____ ______ ___________________

7) Aluminum sulfide _____ ______ ___________________

8) Calcium phosphide _____ ______ ___________________

9) Lithium selenide _____ ______ ___________________

10) Magnesium arsenide _____ ______ ___________________

11) Aluminum fluoride _____ ______ ___________________

12) Beryllium iodide _____ ______ ___________________

13) Barium carbide _____ ______ ___________________

Binary ionics with Transitions – need Roman Numerals

1) Copper (I) oxide _____ ______ ___________________

2) Copper (II) oxide_____ ______ __________________

3) Iron (II) oxide ______ _______ ___________________

4) Iron(III) oxide _____ ______ __________________

5) Lead (IV) chloride_____ ______ __________________

6) Lead (II) fluoride_____ ______ __________________

7) _______________ _____ ______ NiS

8) _______________ _____ ______ Ni2S3

9) _______________ _____ _____ Mn2O

10) _______________ _____ ______ MnO2

Ternary Ionic practice NAME ______________

Give the missing names, ions, and formulae.

Name Ions Formula

1) sodium sulfate _____ ______ __________

2) lithium phosphate _____ ______ __________

3) aluminum acetate _____ ______ __________

4) tin (II) nitrate _____ ______ __________

5) ______________ _____ ______ K2CO3

6) iron (III) sulfite _____ ______ __________

7) barium hydroxide _____ ______ __________

8) ______________ _____ ______ Ca(HSO4)2

9) aluminum bicarbonate _____ ______ __________

10) magnesium bicarbonate _____ ______ __________

11) calcium nitrate _____ ______ __________

12) _____________ NH4+1 S-2 __________

13) tin (IV) carbonate _____ ______ __________

14) iron (III) sulfate _____ ______ __________

15) ammonium phosphate _____ ______ __________

16) aluminum hydroxide _____ ______ __________

17) Cesium chromate ______ ______ __________

18) Beryllium cyanide ______ _______ __________

19) gold (I) sulfite ______ _______ __________

20) Strontium acetate ______ ______ __________

Polyatomic Ions

Group I

C₂H₃O₂⁻1= acetate CO₃⁻2= carbonate PO₃⁻3= phosphite

NO₂⁻1= nitrite SO₃⁻2= sulfite PO₄⁻3= phosphate

NO₃ ⁻1= nitrate SO₄⁻2= sulfate

OH⁻1= hydroxide NH₄⁺1= ammonium

Group II

CN⁻1= cyanide C₂O₄⁻2= oxalate

MnO₄⁻1= permanganate CrO₄⁻2= chromate

ClO⁻1= hypochlorite Cr₂O₇⁻2= dichromate

ClO₂⁻1= chlorite

SiO₃⁻2= silicate

ClO₃⁻1= chlorate

ClO₄⁻1= perchlorate

Group III

H₂PO₄⁻1= Dihydrogen Phosphate HSO₃⁻1= Hydrogen Sulfite

HPO₄⁻2= Hydrogen Phosphate HSO₄⁻1= Hydrogen Sulfate

HCO₃⁻1= Hydrogen Carbonate (bicarbonate)

Group IV –AP only

S2O3-2 = thiosulfate O2-2 = peroxide

SCN-1 = thiocyanate

Hg2+2 = Mercury(I)

Minilab – Write the correct chemical formula for the compounds that you make

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