topic: multivalent metals and polyatomic ions

TOPIC: MULTIVALENT METALS AND POLYATOMIC IONSDate: Thursday, March 21st, 2013

GRADE 10: CHEMISTRY

PUZZLERSCourtesy of Mr. Luoma

ELEMENT OF THE DAY

ELEMENT OF THE DAY What element do rat poison, laundry

detergent, and Silly-Putty all have in common?

Atomic Number: 5 5 Proton, 5 Electron Atomic Weight:

10.811 Location: Group 13

Metalloid Hard Resistant to heat

ELEMENT OF THE DAY: BORON

ELEMENT OF THE DAY: BORON Why is Boron cool to learn about?

Combined with Nitrogen, boron nitride crystals are created, which are almost as hard as diamonds.

Essential nutrient to all green plants Silly-Putty:

Soft and moldable in your hands Hard and bouncy when you throw it against the wall

Boric Acid flames: Green flames are produced when you burn boron http://www.youtube.com/watch?v=BevctrjVPjA

Green Flames from Pinecones: http://www.youtube.com/watch?feature=endscre

en&v=cXhX68qr5wY&NR=1

ELEMENT OF THE DAY: BORON

MULTIVALENT METALSCLASS QUESTIONS 1. Write the formula for the compound formed

by each pair of elements. a. gold(III) and nitrogen b. copper(II) and sulfur c. tin(II) and chlorine d. lead(IV) and oxygen

2. Write the names of the following binary ionic compounds. a. AuCl3 b. PbO2 c. Cu2O d. AsCl3

POLYATOMIC IONIC COMPOUNDSCLASS QUESTIONS 1. Use the table of common polyatomic ions

to help you name and write formulas for these compounds. Watch for multivalent ions, which require identification by a Roman numeral. For multivalent ions, write the name and formula for each form of the ion.

a. Be and PO43–

b. Sn and ClO3–

c. Cu and NO3–

d. NH4+ and SO4

2–

POLYATOMIC IONIC COMPOUNDSCLASS QUESTIONS 2. Write the formula for each ion, and for the

compound formed by each combination of ions. Use the list of common polyatomic ions to help you.

a. calcium and carbonate b. sodium and nitrite c. calcium and sulfite d. lead(II) and phosphate

IONIC COMPOUNDS WORKSHEET Complete the Ionic Compounds Worksheet

Binary Ionic Compounds Multivalent Metals Polyatomic Ionic Compounds

We will check the answers together in class Make note of which questions you were

having difficulty with ASK Questions if you are having difficulties!! A blank sheet with answers is posted on the

website: http://lcsgrade10chemistry.weebly.com/

BINGO – BINARY IONIC COMPOUNDS REVIEW (IF TIME) See Binary Ionic Compounds Review

Powerpoint

SUPPORTING DOCUMENTS ON Science 10 Textbook

Pages: 146-150

Chapter 4 Power Point for ON Science 10 Slides: 23-26

Chapter 4 Notebook - none

Websites: none

HOMEWORK ON Science 10

Textbook Page #: 150

Questions: 9, 10 Page #151

Try Questions:1-8 Read - “Ionic

Compounds at Home”

HOMEWORK ANSWERSPg. 150

9. a. binary, Ni2O3 b. binary, CuI2 c. binary, Sn3N4 d. binary, CrBr2 e. binary, FeP f. neither, LiHCO3 g. ternary, K2SO4 h. ternary, (NH4)3P i. ternary, Ba(NO3)2 j. binary, Co3(PO4)2

HOMEWORK ANSWERSPg. 150

10. a. gold(III) chloride b. tin phosphide c. chromium oxide d. nitrogen sulphide e. ammonium sulphide f. calcium fluoride g. iron(II) sulfite h. magnesium phosphate

HOMEWORK ANSWERS Pg. 151

1. a. chloride b. magnesium c. sulfate d. copper(II)

2. a. OH– b. S2–

c. Al3+ d. Cr3+

3. The diagram should show two potassium atoms each giving one electron to one sulfur atom, which has six electrons in its outer shell.

HOMEWORK ANSWERSPg. 151

4. The tiles repeat in a regular pattern like the atoms in an ionic compound. To represent sodium chloride, there would have to be an equal ratio of black and white tiles.

5. a. lithium carbonate b. ammonium nitrite c. copper(II) oxide

  6.

a. Mg3N2 b. Al(OH)3 c. SnBr2 d. NiSO4

HOMEWORK ANSWERSPg. 151

7. a. Phosphorus was used instead of the

phosphate ion. Na3PO4 b. The brackets around the nitrate ion were

omitted. Ca(NO3)2 c. The two potassium ions are needed to make

the total charge zero. K2SO3

8. Fe2+ or Fe3+

MULTIVALENT METALSCLASS QUESTIONS & ANSWERS 1. Write the formula for the compound formed by

each pair of elements. a. gold(III) and nitrogen AuN b. copper(II) and sulfur CuS c. tin(II) and chlorine SnCl2 d. lead(IV) and oxygen PbO2

2. Write the names of the following binary ionic compounds. a. AuCl3 gold(III) chloride b. PbO2 lead(IV) oxide c. Cu2O copper(I) oxide d. AsCl3 arsenic(III) chloride

POLYATOMIC IONIC COMPOUNDSCLASS QUESTIONS & ANSWERS 1. Use the table of common polyatomic ions

to help you name and write formulas for these compounds. Watch for multivalent ions, which require identification by a Roman numeral. For multivalent ions, write the name and formula for each form of the ion. a. Be and PO4

3– beryllium phosphate Be3(PO4)2 b. Sn and ClO3

– i) tin(II) chlorate Sn(ClO3)2 ii) tin(IV) chlorate Sn(ClO3)4

c. Cu and NO3– i) copper(I) nitrate CuNO3 ii)

copper(II) nitrate Cu(NO3)2 d. NH4

+ and SO42– ammonium sulfate (NH4)2SO4

POLYATOMIC IONIC COMPOUNDSCLASS QUESTIONS & ANSWERS 2. Write the formula for each ion, and for the

compound formed by each combination of ions. Use the list of common polyatomic ions to help you. a. calcium and carbonate Ca2+ CO3

2- CaCO3 b. sodium and nitrite Na+ NO2

- NaNO2 c. calcium and sulfite Ca2+ SO3

2- CaSO3 d. lead(II) and phosphate Pb2+ PO4

3- Pb3(PO4)2