Download Use the following to answer questions 1-14:

CHEMISTRY REVIEW
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Use the following to answer questions 1-14:
True or false.
____ 1. The period in which an element is located on the periodic table indicates the number of
electrons in the valence shell.
____ 2. Metallic elements form cations.
____ 3. Cations are negatively charged ions.
____ 4. Valence electrons are located in the outermost electron shell of the atom.
____ 5. Noble gases are very stable; other elements give up, gain, or share electrons to acquire a
valence shell like those of noble gases.
____ 6. Ionic bonds form between a metal and a non-metal.
____ 7. Metalloids are located on the left-hand side of the periodic table.
____ 8. Each shell of electrons around an atom can hold up to eight electrons.
____ 9. Tellurium has three electrons in its valence shell.
____ 10. A covalent bond forms when atoms share electrons to become stable.
____ 11. Lithium oxide is a molecular compound.
____ 12. Ionic substances are generally soluble in water.
____ 13. Ba2N3 is the correct formula for a compound formed from barium and nitrogen.
____ 14. The correct chemical formula for magnesium sulfate is Mg2SO4.
Use the following to answer questions 15-20:
15.
16.
17.
18.
19.
20.
____ 21.
____ 22.
____ 23.
____ 24.
____ 25.
Fill in the blank with the most appropriate term from the chapter, unit, or course.
To summarize what happens to substances during a chemical reaction, scientists use a
chemical _______________________.
Arsenic has a total of 33 electrons. It has _______________________ electron shells
around its nucleus. The valence shell contains _______________________ of those
electrons.
Phosphorus trichloride is an example of a(n) _______________________ compound.
Compounds that contain two different elements are called _______________________
compounds.
The name of the polyatomic ion CO3-2 is _______________________.
To become a stable ion with a charge of _______________________, aluminum
_______________________ electrons.
Which chemical equation is not balanced?
A) C6H6 + 6O2  6CO2 + 3H2
C) 2Na + Cl2  2NaCl
B) S8 + 8O2  8SO2
D) 2HgO  Hg + O2
What is the balanced equation for the skeletal equation N2 + H2  NH3?
A) N2 + H2  2NH3
C) N2 + H2  N2H2
B) N + H3  NH3
D) N2 + 3H2  2NH3
What is the correct chemical formula for magnesium oxide?
A) MgO B) Mg2O C) MgO2 D) Mg2O2
Which of the following compounds is an ionic compound?
A) H2O B) LiCl C) CH4 D) SO3
What is the total atom count of the compound Ca3(PO4)2?
A) 5 B) 8 C) 12 D) 13
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____ 26. Which of the following formulas is possible?
A) BaO B) NaNe C) MgCr D) N6O5
____ 27. What is the name of PbSO4?
A) lead sulfide B) lead sulfate C) lead(II) sulfate D) lead(IV) sulfate
____ 28. A chemical reaction produced AgBr and CsNO3. What were the reactants in the reaction?
A) CsNO3 and AgBr
C) CsAg and BrNO3
B) CsBr and AgNO3
D) AgNO3 and H2O
____ 29. Which of the following describes a metalloid?
A) a special type of metal
B) located on the left-hand side of the periodic table
C) has characteristics of both a metal and a non-metal
D) always soluble in water
____ 30. Which of the figures shown here is the correct electron dot diagram for phosphorus?
A) A B) B C) C D) D
____ 31. Which of the figures shown here is the correct WHMIS symbol for biohazardous
material?
A) A B) B C) C D) D
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32. Write the chemical formulas of the following compounds. (2 marks each)
a) gold(II) chloride
b) ferric phosphide
c) nickel(II) selenide
d) zinc chloride
33. Write the chemical names of the following binary compounds. (2 marks each)
a) MgI2
b) K4C
c) LiCl
d) Be3N2
34. Write the chemical formulas of the following compounds. (2 marks each)
a) magnesium iodide
b) aluminum oxide
c) strontium selenide
d) barium nitride
35. Write the chemical names of the following compounds. Use the Stock system to show the
correct cation valence of the metals. (3 marks each)
a) CuCl2
b) MnO
c) CrP
d) Fe2S3
36. Using the Stock system, write the chemical names of the following compounds that have
polyatomic ions. (2 marks each)
a) Na2SO4
b) Ca3(PO4)2
c) NH4OH
d) CuCO3
37. Write the chemical formulas of the following compounds. (2 marks each)
a) copper(II) sulfate
b) nickel(II) nitrate
c) ammonium chloride
d) calcium hydrogen carbonate
38. Using the prefix method, write the names of the following molecular compounds. (2
marks each)
a) PCl3
b) NO2
c) CS2
d) CCl4
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39. Fill in the blanks of the chart below to summarize the characteristics of metals, nonmetals, and metalloids. (15 marks)
Characteristic
Metal
Non-metal
Metalloid
State
Lustre
Conductivity
Malleability
Ductility
40. Explain the difference between ionic and covalent bonding by giving two (2)
characteristics of each. (4 marks)
41. Explain the terms "ion," "cation," and "anion." (3 marks)
42. Draw a Bohr-Rutherford diagram for an atom of sulfur. Label the number of protons, the
number of electrons in each shell, and the valence electrons. (6 marks)
43. Using Bohr-Rutherford diagrams, show how a bond is formed between magnesium and
fluorine. Use arrows to show the transfer of electrons. Beside your diagram, identify the
ions that result from this transfer. (5 marks)
44. Using electron dot diagrams, show the bonding in a molecule of nitrogen fluoride, NF3.
(3 marks)
45. Draw an electron dot diagram for the element sulfur. (3 marks)
46. Balance the following chemical equations. (2 marks each)
a) Zn + HCl  ZnCl2 + H2
b) Al + HCl  AlCl3 + H2
c) P4 + I2  PI3
47. Balance the following chemical equations. (2 marks each)
a) CaO + C  CaC2 + CO2
b) Al2(SO4)3 + BaCl2  AlCl3 + BaSO4
c) C3H8 + O2  CO2 + H2O
48. Write a balanced equation for the word equation: aluminum phosphate + sodium chlorate
 aluminum chlorate + sodium phosphate. (5 marks)
49. Using your knowledge of compounds, their formulas, and how they bond, determine the
formulas of the missing products in the following chemical equations. (6 marks)
a) Sn + AgNO3  _______________________ + _______________________
b) CrI3 + NaOH  _______________________ + _______________________
c) sodium iodide and lead(II) nitrate  _______________________ +
_______________________
50. Write balanced chemical equations for the following word equations. (18 marks)
a) lead(IV) sulfide + calcium hydroxide  lead(IV) hydroxide + calcium sulfide
b) ammonium hydroxide + ferric chloride  ammonium chloride + ferric hydroxide
c) bromine + copper(I) iodide  copper(I) bromide + iodine