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Name:____________________

Science 10 – Chapter 4 Review

1. Symbol (include charge) Atomic Number # of electrons # of neutrons

Ni 2+

Sc

72 68

I -

U+4

2. Define the following:

a) Stable octet ____________________________________________________

b) Valence electrons _______________________________________________

c) Ionic bond _____________________________________________________

d) Covalent bond __________________________________________________

3. Draw Bohr models for the following: a) Mg b) H2O 4. Draw Lewis diagrams for the following: a) Sodium Chloride b) Fluorine gas, F2

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5. On the following periodic table, identify -a family

-a period -halogens -alkali metals noble gases

6. Identify the following atoms (no ion charge) from their Bohr diagrams.

7. When naming a compound with a multivalent metal, what must you include in the name?

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8. Determine the metal ion and its charge in each of the following compounds. a) CoCO3 ........................The metal ion is _________________ b) Pd(ClO)2 ....................The metal ion is _________________ c) Ru(CO3)2 ...................The metal ion is _________________ d) U(CrO4)3 ...................The metal ion is _________________ 9. Name the following compounds. Include an ‘i’ for ionic and ‘c’ for covalent bonds Si2Br6

CrF2

AuP

Be(CN)2

OsPO3

P2S3

N2O3

MnF3

RuN

Mg(NO3)2

CuCO3

As2O5

Zr(MnO4)4

HgSO3

Fe(ClO)2

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10. Write formulas for the following compounds. Include an ‘i’ for ionic bond and ‘c’ for covalent bond Potassium arsenide

Calcium selenide

Cobalt (III) nitride

Beryllium chromate

Yttrium hydrogen sulphite

Tricarbon pentoxide

Silicon tetrachloride

Lithium bromide

Barium oxide

Nickel (III) phosphide

Scandium phosphite

Radium acetate

Dinitrogen monoxide

Tricarbon tetraiodide

Thallium (III) bisulphate

Hexaboron monosilicide

Magnesium hydroxide

Ammonium dichromate

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9. An unknown element (we’ll call “Y”) forms the following compounds: Y(NO3)5 Y2(CrO4)3 and Y(MnO4)3 From the information given, what possible ions (with their charges) does Y form? _________________________________________________________________ 9. Balance the following equations. a) Al + F2 AlF3 b) PbCl4 + K3PO4 KCl + Pb3(PO4)4 c) Br2 + FeI3 I2 + FeBr3 d) Na2CO3 + Cr(NO3)3 NaNO3 + Cr2(CO3)3 e) Mn + I2 MnI4 f) C2H6 + O2 CO2 + H2O g) K2SO4 + AgNO3 Ag2SO4 + KNO3 h) Ca(OH)2 + HCl CaCl2 + H2O i) Mg3N2 Mg + N2 10. Write skeleton equations for the following chemical reactions, and balance them. Be sure to check your formulas carefully before you balance! a) lithium phosphate + magnesium sulfate lithium sulfate + magnesium phosphate b) zinc iodide + copper (I) nitrate zinc nitrate + copper (I) iodide c) mercury (II) nitrate + sodium hydrogen carbonate sodium nitrate + mercury (II)

hydrogen carbonate

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d) nickel (III) iodide + iron (II) sulfide nickel (III) sulfide + iron (II) iodide e) aluminum hydroxide + hydrogen fluoride aluminum fluoride + water f) calcium bromide + potassium carbonate calcium carbonate + potassium bromide g) titanium (III) fluoride + cesium sulfite cesium fluoride + titanium (III) sulfite h) barium sulfate + sodium hydroxide sodium sulfate + barium hydroxide i) calcium chloride + potassium potassium chloride + calcium j) tricarbon octahydride + oxygen carbon dioxide + water k) sodium + fluorine sodium fluoride

Remember the diatomic elements! H2O2F2Br2I2N2Cl2