Name: 
 

Unit 2 Chemistry


Modified True/False
Indicate whether the statement is true or false.  If false, change the identified word or phrase to make the statement true.
 

 1. 
Fluorine and bromine are noble gases. ____________________

 

 2. 
The electron configuration shown below represents an atom of magnesium. ____________________
mtf002-1.jpg

 

 3. 
In the formation of an ionic bond, electrons are transferred  between atoms. ____________________

 

 4. 
The name of SnS is tin(II) sulfide. ____________________

 

 5. 
A Lewis diagram shows the arrangement of valence electrons for an atom. ____________________

 

 6. 
On the pH scale, substances with a pH greater than 7 are acidic. ____________________

 

 7. 
The structure of organic molecules is based on an atom with four valence electrons. ____________________

 

 8. 
The formula for mtf008-1.jpg represents a total of nine atoms. ____________________

 

 9. 
The materials consumed in a chemical reaction are called reactants. ____________________

 

 10. 
Subscripts are placed in front of each chemical formula in order to balance a chemical equation. ____________________

 

 11. 
When there is only one product, the reaction type must be synthesis. ____________________

 

 12. 
A reaction to produce magnesium chloride requires two atoms of chlorine for every atom of magnesium. ____________________

 

 13. 
The chemical formula, mtf013-1.jpg, represents a total of nineteen atoms. ____________________

 

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 
Which of the following elements is a non-metal?
A.
xenon
B.
arsenic
C.
palladium
D.
zirconium
 

 2. 
Which of the following is always equal to the number of protons in an atom?
A.
neutrons
B.
mass number
C.
atomic mass
D.
atomic number
 

 3. 
Which of the following is equal to the sum of the neutrons and protons in a single atom?
A.
electron
B.
atomic mass
C.
mass number
D.
atomic number
 

 4. 
Which of the following describes an electron?
A.
uncharged particle
B.
located in the nucleus
C.
positively charged particle
D.
negatively charged particle
 

 5. 
Which of the following atoms has the greatest number of protons?
A.
boron
B.
silicon
C.
sulfur
D.
aluminum
 

 6. 
How many electrons are in the outermost shell of an alkali metal atom?
A.
1
B.
2
C.
7
D.
8
 

 7. 
Which of the following elements is a transition metal?
A.
lithium
B.
beryllium
C.
chromium
D.
germanium
 

 8. 
Which of the following elements is a noble gas?
A.
oxygen
B.
nitrogen
C.
krypton
D.
hydrogen
 

 9. 
Which of the following elements is a halogen?
A.
neon
B.
iodine
C.
rubidium
D.
strontium
 

 10. 
Which of the following characteristics do members of the same chemical family share?
A.
mass number
B.
atomic number
C.
number of neutrons in the nucleus
D.
number of electrons in the outermost electron shell
 

 11. 
When an atom of carbon and an atom of oxygen combine, which of the following is formed?
A.
a mixture
B.
an element
C.
a compound
D.
a subatomic particle
 

 12. 
How many electron pairs occupy the outermost electron shell of an atom with 36 protons?
A.
1
B.
2
C.
3
D.
4
 

 13. 
Which of the following statements describe noble gases?
I.
stable compounds
II.
very unreactive non-metals
III.
fill outermost electron shells
A.
I and II only
B.
I and III only
C.
II and III only
D.
I, II, and III
 

 14. 
The element represented by the Bohr model below exists naturally as two different types of atoms. How many neutrons are present in the most common atom?
mc014-1.jpg
A.
5
B.
6
C.
10
D.
11
 

 15. 
How many valence electrons does a halogen atom have?
A.
1
B.
2
C.
7
D.
8
 

 16. 
When the atom represented by the Bohr model below forms an ion, what number of electrons will it lose or gain?
mc016-1.jpg
A.
gain 1
B.
lose 1
C.
gain 2
D.
lose 2
 

 17. 
Which of the following chemical families contains atoms that form ions with a +2 charge?
A.
halogens
B.
noble gases
C.
alkali metals
D.
alkaline earth metals
 

 18. 
Which of the following elements is most likely to exist as a diatomic molecule?
A.
neon
B.
silicon
C.
oxygen
D.
potassium
 

 19. 
Which of the following are named using a prefix system?
A.
ions
B.
polyatomic ions
C.
ionic compounds
D.
covalent compounds
 

 20. 
When the following elements are present in a compound, which one requires a roman numeral as part of its chemical name?
A.
zinc
B.
cobalt
C.
gallium
D.
aluminum
 

 21. 
How many valence electrons does an ion with 15 protons have?
A.
3
B.
5
C.
8
D.
15
 

 22. 
How many pairs of valence electrons are present in a sulfide ion?
A.
1
B.
2
C.
3
D.
4
 

 23. 
Which of the following is most likely to result when two atoms of the same element form a covalent bond?
A.
a polyatomic ion
B.
an ionic compound
C.
a diatomic molecule
D.
a covalent compound
 

 24. 
Which of the following chemical formulas represents a compound that requires a roman numeral in its chemical name?
A.
mc024-1.jpg
B.
mc024-2.jpg
C.
mc024-3.jpg
D.
mc024-4.jpg
 

 25. 
Which of the following compounds is named correctly?
A.
silver(I) iodide
B.
nickel sulfate
C.
triselenium heptaoxide
D.
phosphorus(III) chloride
 

 26. 
What compound forms when three phosphorus atoms and five iodine atoms bond together?
A.
phosphorus iodide
B.
phosphorus(III) iodide
C.
phosphorus pentaiodide
D.
triphosphorus pentaiodide
 

 27. 
Which of the following is a correct name for a compound formed from an alkaline earth metal and a halogen?
A.
barium iodide
B.
magnesium chlorite
C.
calcium(II) fluoride
D.
strontium dibromide
 

 28. 
The compound mc028-1.jpg is currently being researched as a solid fuel cell for the production of electricity. What is the name of this compound?
A.
bismuth oxide
B.
bismuth(II) oxide
C.
bismuth(III) oxide
D.
dibismuth trioxide
 

 29. 
Which row of the table below gives the correct formula and name of a compound formed between a transition metal and a halogen?

 
Chemical formula
Chemical name
A.
AgI
silver(I) iodide
B.
mc029-1.jpg
cobalt(III) fluoride
C.
mc029-2.jpg
iron dichloride
D.
mc029-3.jpg
calcium bromide
A.
A
B.
B
C.
C
D.
D
 

 30. 
What compound is represented by the formula mc030-1.jpg?
A.
phosphorus bromide
B.
phosphorus(VII) bromide
C.
phosphorus heptabromide
D.
monophosphorus heptabromide
 

 31. 
Which row of the table matches the name of a covalent compound with its correct chemical formula?

 
Name of compound
Formula of compound
A.
silicon oxide
mc031-1.jpg
B.
beryllium oxide
mc031-2.jpg
D.
selenium(II) oxide
mc031-3.jpg
C.
dinitrogen tetraoxide
mc031-4.jpg
A.
A
B.
B
C.
C
D.
D
 

 32. 
Which row of the table correctly gives the name and chemical formula for a compound resulting when an alkali metal and a halogen form a compound?

 
Chemical formula
Name of compound
A.
FrF
francium monofluoride
B.
CaS
calcium sulfide
C.
CuCl
copper(I) chloride
D.
RbBr
rubidium bromide
A.
A
B.
B
C.
C
D.
D
 

 33. 
Which row of the table correctly gives the name and chemical formula for a compound resulting when two halogen atoms combine to form a compound?

 
Chemical Formula
Name of compound
A.
mc033-1.jpg
iodine monofluoride
B.
mc033-2.jpg
bromine
C.
mc033-3.jpg
bromine chloride
D.
mc033-4.jpg
potassium chloride
A.
A
B.
B
C.
C
D.
D
 

 34. 
Which of the following could be produced when a chemical bond forms between atoms of two different elements that each have seven valence electrons?
A.
oxygen gas
B.
nitrogen gas
C.
potassium chloride
D.
iodine monobromide
 

 35. 
Which element could be represented by the Lewis diagram below?
mc035-1.jpg
A.
neon
B.
helium
C.
lithium
D.
sulfur
 

 36. 
Which of the following is a Lewis diagram?
A.
mc036-1.jpg
B.
mc036-2.jpg
C.
mc036-3.jpg
D.
mc036-4.jpg
 

 37. 
Which of the following could be represented by the Lewis diagram below?
mc037-1.jpg
A.
an ion of lithium
B.
an atom of argon
C.
an ion of beryllium
D.
an ion of magnesium
 

 38. 
Which of the following atomic numbers indicates an element most commonly found in organic compounds?
A.
2
B.
6
C.
8
D.
12
 

 39. 
Which of the following Lewis diagrams represents a calcium ion?
A.
mc039-1.jpg
B.
mc039-2.jpg
C.
mc039-3.jpg
D.
mc039-4.jpg
 

 40. 
Which row of the table correctly indicates the colour of an indicator in each solution?
 
Barium oxide
Sodium bromide
Sulfur dioxide
A.
litmus is pink
phenolphthalein is pink
litmus is pink
B.
litmus is blue
phenolphthalein is colourless
litmus is pink
C.
phenolphthalein is pink
litmus is blue
phenolphthalein is colourless
D.
phenolphthalein is pink
litmus is blue
litmus is blue
A.
A
B.
B
C.
C
D.
D
 

 41. 
The following illustration shows a balance with reactants and products on opposite sides.
mc041-1.jpg

Which of the following is demonstrated by the illustration?
A.
Kinetic Molecular Theory
B.
Law of Conservation of Mass
C.
A catalyst affects the rate of chemical reactions.
D.
Molecules undergo chemical change to yield reactants.
 

 42. 
Which of the following chemical formulas contains the greatest number of individual atoms?
A.
mc042-1.jpg
B.
mc042-2.jpg
C.
mc042-3.jpg
D.
mc042-4.jpg
 

 43. 
What type of reaction is shown below?

mc043-1.jpg
A.
synthesis
B.
combustion
C.
decomposition
D.
single replacement
 

 44. 
Which of the following changes is most likely to increase the rate of a chemical reaction?
A.
removing a catalyst
B.
removing some reactants
C.
increasing the temperature
D.
increasing product concentration
 

 45. 
Which of the following is a reactant in all combustion reactions?
A.
water
B.
oxygen
C.
nitrogen
D.
carbon dioxide
 

 46. 
Which of the following reactants most likely to be reactants in a single replacement reaction?
A.
one compound
B.
two elements
C.
two compounds
D.
one compound and one element
 

 47. 
Use Scenario 9.1 to answer the next question.

In the automobile airbag, what type of reaction occurs as sodium azide reacts?
A.
synthesis
B.
combustion
C.
decomposition
D.
single replacement
 

 48. 
Which of the following types of reaction could have strontium hydroxide as a reactant?

I.
neutralization
II.
single replacement
III.
double replacement
A.
I and II only
B.
I and III only
C.
II and III only
D.
I, II, and III
 

 49. 
Which of the following changes will fix the balancing error in the equation below?

mc049-1.jpg
A.
Divide all coefficients by 2.
B.
Change the coefficient on mc049-2.jpg to “6.”
C.
Change the equation of mc049-3.jpg to be mc049-4.jpg.
D.
Change the coefficient on oxygen to a “7.”
 

 50. 
Which set of ordered coefficients balances the following equation?

mc050-1.jpg
A.
1, 3, 1, 3
B.
2, 3, 2, 3
C.
2, 3, 4, 1
D.
4, 3, 4, 3
 

 51. 
Which set of ordered coefficients balances the following equation?

mc051-1.jpg
A.
1, 1, 2, 1, 1
B.
1, 2, 1, 1, 3
C.
3, 2, 3, 2, 3
D.
3, 2, 6, 2, 3
 

 52. 
The following reactants are likely to undergo what type of chemical change?

mc052-1.jpg
A.
synthesis
B.
combustion
C.
decomposition
D.
single replacement
 

 53. 
What type of chemical change are the following reactants likely to undergo?

mc053-1.jpg
A.
synthesis
B.
decomposition
C.
single replacement
D.
double replacement
 

 54. 
When the following reactants undergo a double replacement reaction, what products will form?

mc054-1.jpg
A.
cobalt nitrate and sulfuric acid
B.
cobalt(II) sulfide and nitric acid
C.
cobalt sulfide and nitrogen dioxide
D.
cobalt(II) nitrate and sulfurous acid
 

 55. 
When the following reactants undergo a single replacement reaction, what products will form?

mc055-1.jpg
A.
bromine chloride and calcium
B.
calcium bromide and chlorine
C.
chlorine(II) bromide and calcium
D.
bromine monochloride and calcium bromide
 

 56. 
Which set of reactants will undergo a combustion reaction?
A.
mc056-1.jpg
B.
mc056-2.jpg
C.
mc056-3.jpg
D.
mc056-4.jpg
 

 57. 
Which set of reactants will undergo a single replacement reaction?
A.
zinc sulfate
B.
iron and oxygen
C.
copper(II) sulfate and magnesium
D.
aluminum bromide and sodium carbonate
 

Matching
 
 
Match each element name with the correct description.
A.
argon-40
D.
chlorine-36
B.
boron-11
E.
hydrogen-1
C.
fluorine-19
F.
magnesium-24
 

 1. 

 atom with no neutrons
 

 2. 

 electron configuration of 2, 8, 2
 

 3. 

 halogen with two electron shells
 

 4. 

 unreactive non-metal with three electron shells
 

 5. 

 metalloid with three electrons in the outermost electron shell
 

 6. 

 element with three electron shells and seven electrons in the outermost shell
 
 
Match the compound name with the total number of atoms represented by its chemical formula. Answers may be used as often as necessary.
A.
2
D.
7
B.
3
E.
11
C.
6
F.
14
 

 7. 

 lithium fluoride
 

 8. 

 sulfur hexafluoride
 

 9. 

 magnesium bicarbonate
 

 10. 

 chromium(II) chromate
 

 11. 

 tetraphosphorus decaoxide
 
 
Match the chemical equation with the correct classification category. Categories may be used as often as necessary.
A.
acid
C.
ionic salt
B.
base
 

 12. 

 ma012-1.jpg
 

 13. 

 ma013-1.jpg
 

 14. 

 ma014-1.jpg
 

 15. 

 ma015-1.jpg
 

 16. 

 ma016-1.jpg
 

 17. 

 ma017-1.jpg
 

 18. 

 ma018-1.jpg
 

 19. 

 ma019-1.jpg
 
 
Match the element name with its correct Lewis diagram.
A.
grp004-1.jpg
D.
grp004-4.jpg
B.
grp004-2.jpg
E.
grp004-5.jpg
C.
grp004-3.jpg
F.
grp004-6.jpg
 

 20. 

 neon
 

 21. 

 helium
 

 22. 

 silicon
 

 23. 

 fluorine
 

 24. 

 astatine
 

 25. 

 calcium
 

 26. 

 nitrogen
 

 27. 

 rubidium
 

 28. 

 potassium
 

 29. 

 phosphorus
 
 
Match each chemical reaction with the correct type of reaction. Reaction types may be used as often as necessary.
A.
synthesis
D.
decomposition
B.
combustion
E.
single replacement
C.
neutralization
F.
double replacement
 

 30. 

 ma030-1.jpg
 

 31. 

 ma031-1.jpg
 

 32. 

 ma032-1.jpg
 

 33. 

 ma033-1.jpg
 

 34. 

 ma034-1.jpg
 

 35. 

 ma035-1.jpg
 

 36. 

 ma036-1.jpg
 

 37. 

 ma037-1.jpg
 
 
Match each set of reactants with the type of reaction that they can undergo. Types of reactions may be used as often as necessary.
A.
synthesis
D.
decomposition
B.
combustion
E.
single replacement
C.
neutralization
F.
double replacement
 

 38. 

 ma038-1.jpg
 

 39. 

 ma039-1.jpg
 

 40. 

 ma040-1.jpg
 

 41. 

 ma041-1.jpg
 

 42. 

 ma042-1.jpg
 

 43. 

 ma043-1.jpg
 

 44. 

 ma044-1.jpg
 

 45. 

 ma045-1.jpg
 



 
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