Exam
Name___________________________________
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
1) Which of the following elements is not found as a diatomic molecule? 1)
A) Chlorine B) Iodine C) Phosphorus D) Nitrogen
2) Which of the following elements is found in nature as a polyatomic molecule? 2)
A) Helium B) Sulfur C) Boron D) Lithium
3) When an atom either gains or loses electrons to form ions, the number of electrons gained or lost 3)
depends on
A) the number of positive charges in the nucleus that need to be neutralized.
B) how many electrons need to be gained or lost to achieve the number of electrons of a
noble gas.
C) the atomic radius of the element.
D) The row of the periodic table the element is placed in.
4) In a covalent compound, a group of atoms is held together by 4)
A) the attraction of positive ions to negative ions.
B) strong interactions between the nuclei of the atoms.
C) strong electrostatic forces.
D) one or more pairs of electrons shared between the atoms.
5) When forming compounds, a carbon atom typically forms __________ bonds to other atoms. 5)
A) two B) three C) four D) five
6) A molecule of glucose contains 6 carbon atoms, 12 hydrogen atoms, and 6 oxygen atoms. Which 6)
of the following is a correct formula for glucose?
A) C6 H12O 6 B) C6 (H2O) 6 C) 6CH2O D) (CH2O) 6
7) In contrast to molecular formulas, structural formulas show 7)
A) the arrangement of the atoms in three dimensions.
B) the total number of each type of atom.
C) which atoms are bonded to each other.
D) how the compound will behave physically.
8) The structural formula for one of the compounds found in gasoline is 8)
CH3 CH(CH3 )CH2C(CH3 ) 3 .
What is its molecular formula?
A) C6 H12 B) C8 H15 C) C7H15 D) C8 H18
9) When the formula is written for an ionic compound, 9)
A) the anions and cations are present in a ratio that results in no net charge.
B) there is always one cation and one anion present.
C) the anions always have a positive charge.
D) the cations and anions can be written in any order.
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,10) Covalent compounds are different from ionic compounds because 10)
A) covalent compounds have bonds that arise from the sharing of electrons.
B) the atoms in a covalent compound have charges.
C) a covalent compound is held together by electrostatic attractions.
D) electrons are completely transferred between atoms in covalent compounds.
11) What is the charge found on the common monatomic ion of selenium (Se)? 11)
A) +1 B) -1 C) -2. D) +2
12) When the charge on an anion or cation increases and the distance between the atoms remains 12)
the same, the energy of attraction __________.
A) could increase or decrease B) decreases
C) remains the same D) increases
13) As the distance between an anion and a cation increases, their energy of attraction __________. 13)
A) increases B) could increase or decrease
C) decreases D) remains the same
14) What charge is found on the common monatomic ion of strontium (Sr)? 14)
A) -1 B) +2 C) +1 D) -2
15) What is the charge on the common monatomic ion of phosphorus? 15)
A) +5 B) +3 C) -3 D) -1
16) Ionic solids normally have high melting points because 16)
A) the intramolecular covalent bonds are strong.
B) ionic solids are very resistant to evaporation.
C) the ions are held in place by strong electrostatic attractions.
D) the intermolecular forces are weak.
17) What is the correct formula for the compound formed between the calcium ion and the 17)
phosphide ion?
A) Ca2P B) Ca2P 3 C) CaP D) Ca3 P 2
18) What is the correct formula for the compound formed between the lithium ion and the selenide 18)
ion?
A) Li2Se B) LiSe C) Li3 Se D) LiSe 2
19) What is the correct formula for the chlorate ion? 19)
A) ClO B) ClO 4- C) ClO - D) ClO 2-
20) What is the correct formula for the dichromate ion? 20)
A) Cr3+ B) Cr2O 72- C) CrO 4- D) CrO 2-
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,21) A polyatomic ion can be described as 21)
A) an ion with more than one atom held together by strong covalent bonds.
B) an anion or cation that breaks apart readily in a chemical reaction.
C) the combination of an anion and a cation that actually has no charge.
D) more than one atom held together by strong ionic bonds.
22) What is the correct formula for the compound formed from the sodium ion and the bicarbonate 22)
ion?
A) Na2CO 3 B) NaHCO 3 C) Na4C D) Na2(CO 3 ) 2
23) What is the formula for the compounds formed from the ammonium ion and sulfide ion? 23)
A) NH4S 2 B) (NH4) 3 S 2 C) (NH4) 2S D) NH4S
24) Many ionic compounds occur as hydrates. What is a hydrate? 24)
A) A compound that dissolves easily in water
B) A compound that decomposes in the presence of water
C) A compound that contains hydrogen
D) A compound that contains loosely bound water molecules
25) In naming an ionic compound, which of the following is NOT true? 25)
A) If a metal forms more than one cation, the charge is put in parentheses as a Roman
numeral.
B) The number of anions and cations are specified using the prefixes mono, di , etc.
C) The name of the cation is given first, followed by the name of the anion.
D) If a metal forms only one cation, the charge is not specified.
26) In naming an ionic compound, the __________ is named first followed by the __________. 26)
A) anion, cation B) anion, metal
C) cation, anion D) monatomic ion, polyatomic ion
27) If a metal forms more than one positively charged ion, the charge on the metal is indicated, in 27)
chemical names, by
A) indicating the charge as the number, followed by the plus sign in parentheses.
B) showing the charge as a superscript.
C) indicating the charge as a Roman numeral in parentheses.
D) putting the charge as an Arabic numeral in parentheses.
28) The correct name for the compound KMnO 4 is __________. 28)
A) potassium permagnesiate B) potassium permanganate
C) potassium manganesetetroxide D) potassium manganese oxide
29) What is the correct formula for ammonium hydrogen phosphate? 29)
A) (NH4) 3 PO 4 B) (NH4) 2HPO 4
C) (NH4) 2H2PO 4 D) NH4H2PO 4
30) What is the systematic name for Fe 3 (PO 4) 2? 30)
A) Iron(III) phosphate B) Iron diphosphate
C) Iron(II) phosphate D) Iron phosphate
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, 31) What is the systematic name for Ag2Cr2O 7? 31)
A) Silver dichromate B) Silver chromate
C) Silver(I) dichromate D) Silver dichromium oxide
32) What is the formula of iron(III) perchlorate? 32)
A) FeCl3 B) Fe 2(ClO 3 ) 3 C) Fe(ClO 3 ) 3 D) Fe(ClO 4) 3
33) Which of the following names is NOT correct for the formula given? 33)
A) Manganese(II) nitrate, Mn(NO 3 ) 2 B) Magnesium(II) oxide, MgO
C) Copper(II) chloride, CuCl2 D) Cobalt(II) chloride, CoCl2
34) Which of the following names is correct for the formula given? 34)
A) Chromium chloride, CrCl2 B) Cupric chloride, CuCl 2
C) Ferric chloride, FeCl2 D) Manganese(II) chloride, MgCl2
35) What is the formula of chromium(III) acetate? 35)
A) Cr3 (CH3 CO 2) 2 B) Cr(CH3 CO 2) 3
C) Cr2(CH3 CO 2) 3 D) Cr(CH3 CO 2) 2
36) What is the formula for ferric sulfate? 36)
A) Fe(SO 4) 2 B) Fe 2(SO 4) 3 C) FeSO 4 D) Fe 3 (SO 4) 2
37) What is the formula for cupric hypochlorite? 37)
A) CuClO B) Cu(ClO) 3 C) Cu(ClO) 2 D) Cu(ClO 3 ) 2
38) What is the proper name for the compound P 4O 10 ? 38)
A) Phosphorus decaoxide B) Tetraphosphorus decoxide
C) Decaoxide tetraphosphorus D) Oxide phosphorus
39) What is the correct formula for dinitrogen pentoxide? 39)
A) NO 2NO 3 B) (N 2O5) 2 C) N 2O 5 D) (NO 5 ) 2
40) What is the proper name for the compound Se 2Cl5 ? 40)
A) Diselenium pentachloride B) Pentachloride diselenium
C) Selenium chloride D) Selenium pentachloride
41) In naming a covalent compound, which of the following is true? 41)
A) The name of the cation is listed first, followed by the name of the anion.
B) The charge in the ions is given in parentheses.
C) The prefixes bi and quatra are used for two and four.
D) The element farthest to the left in the periodic table is listed first.
42) When naming hydrocarbons, which of the following is NOT true? 42)
A) Numbers are always assigned from left to right.
B) The names of the branches are based on the number of carbon atoms they contain.
C) The longest unbranched chain is used to determine the parent compound.
D) The location of branches is specified by the number of the carbon where they are attached.
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Name___________________________________
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
1) Which of the following elements is not found as a diatomic molecule? 1)
A) Chlorine B) Iodine C) Phosphorus D) Nitrogen
2) Which of the following elements is found in nature as a polyatomic molecule? 2)
A) Helium B) Sulfur C) Boron D) Lithium
3) When an atom either gains or loses electrons to form ions, the number of electrons gained or lost 3)
depends on
A) the number of positive charges in the nucleus that need to be neutralized.
B) how many electrons need to be gained or lost to achieve the number of electrons of a
noble gas.
C) the atomic radius of the element.
D) The row of the periodic table the element is placed in.
4) In a covalent compound, a group of atoms is held together by 4)
A) the attraction of positive ions to negative ions.
B) strong interactions between the nuclei of the atoms.
C) strong electrostatic forces.
D) one or more pairs of electrons shared between the atoms.
5) When forming compounds, a carbon atom typically forms __________ bonds to other atoms. 5)
A) two B) three C) four D) five
6) A molecule of glucose contains 6 carbon atoms, 12 hydrogen atoms, and 6 oxygen atoms. Which 6)
of the following is a correct formula for glucose?
A) C6 H12O 6 B) C6 (H2O) 6 C) 6CH2O D) (CH2O) 6
7) In contrast to molecular formulas, structural formulas show 7)
A) the arrangement of the atoms in three dimensions.
B) the total number of each type of atom.
C) which atoms are bonded to each other.
D) how the compound will behave physically.
8) The structural formula for one of the compounds found in gasoline is 8)
CH3 CH(CH3 )CH2C(CH3 ) 3 .
What is its molecular formula?
A) C6 H12 B) C8 H15 C) C7H15 D) C8 H18
9) When the formula is written for an ionic compound, 9)
A) the anions and cations are present in a ratio that results in no net charge.
B) there is always one cation and one anion present.
C) the anions always have a positive charge.
D) the cations and anions can be written in any order.
1
,10) Covalent compounds are different from ionic compounds because 10)
A) covalent compounds have bonds that arise from the sharing of electrons.
B) the atoms in a covalent compound have charges.
C) a covalent compound is held together by electrostatic attractions.
D) electrons are completely transferred between atoms in covalent compounds.
11) What is the charge found on the common monatomic ion of selenium (Se)? 11)
A) +1 B) -1 C) -2. D) +2
12) When the charge on an anion or cation increases and the distance between the atoms remains 12)
the same, the energy of attraction __________.
A) could increase or decrease B) decreases
C) remains the same D) increases
13) As the distance between an anion and a cation increases, their energy of attraction __________. 13)
A) increases B) could increase or decrease
C) decreases D) remains the same
14) What charge is found on the common monatomic ion of strontium (Sr)? 14)
A) -1 B) +2 C) +1 D) -2
15) What is the charge on the common monatomic ion of phosphorus? 15)
A) +5 B) +3 C) -3 D) -1
16) Ionic solids normally have high melting points because 16)
A) the intramolecular covalent bonds are strong.
B) ionic solids are very resistant to evaporation.
C) the ions are held in place by strong electrostatic attractions.
D) the intermolecular forces are weak.
17) What is the correct formula for the compound formed between the calcium ion and the 17)
phosphide ion?
A) Ca2P B) Ca2P 3 C) CaP D) Ca3 P 2
18) What is the correct formula for the compound formed between the lithium ion and the selenide 18)
ion?
A) Li2Se B) LiSe C) Li3 Se D) LiSe 2
19) What is the correct formula for the chlorate ion? 19)
A) ClO B) ClO 4- C) ClO - D) ClO 2-
20) What is the correct formula for the dichromate ion? 20)
A) Cr3+ B) Cr2O 72- C) CrO 4- D) CrO 2-
4
2
,21) A polyatomic ion can be described as 21)
A) an ion with more than one atom held together by strong covalent bonds.
B) an anion or cation that breaks apart readily in a chemical reaction.
C) the combination of an anion and a cation that actually has no charge.
D) more than one atom held together by strong ionic bonds.
22) What is the correct formula for the compound formed from the sodium ion and the bicarbonate 22)
ion?
A) Na2CO 3 B) NaHCO 3 C) Na4C D) Na2(CO 3 ) 2
23) What is the formula for the compounds formed from the ammonium ion and sulfide ion? 23)
A) NH4S 2 B) (NH4) 3 S 2 C) (NH4) 2S D) NH4S
24) Many ionic compounds occur as hydrates. What is a hydrate? 24)
A) A compound that dissolves easily in water
B) A compound that decomposes in the presence of water
C) A compound that contains hydrogen
D) A compound that contains loosely bound water molecules
25) In naming an ionic compound, which of the following is NOT true? 25)
A) If a metal forms more than one cation, the charge is put in parentheses as a Roman
numeral.
B) The number of anions and cations are specified using the prefixes mono, di , etc.
C) The name of the cation is given first, followed by the name of the anion.
D) If a metal forms only one cation, the charge is not specified.
26) In naming an ionic compound, the __________ is named first followed by the __________. 26)
A) anion, cation B) anion, metal
C) cation, anion D) monatomic ion, polyatomic ion
27) If a metal forms more than one positively charged ion, the charge on the metal is indicated, in 27)
chemical names, by
A) indicating the charge as the number, followed by the plus sign in parentheses.
B) showing the charge as a superscript.
C) indicating the charge as a Roman numeral in parentheses.
D) putting the charge as an Arabic numeral in parentheses.
28) The correct name for the compound KMnO 4 is __________. 28)
A) potassium permagnesiate B) potassium permanganate
C) potassium manganesetetroxide D) potassium manganese oxide
29) What is the correct formula for ammonium hydrogen phosphate? 29)
A) (NH4) 3 PO 4 B) (NH4) 2HPO 4
C) (NH4) 2H2PO 4 D) NH4H2PO 4
30) What is the systematic name for Fe 3 (PO 4) 2? 30)
A) Iron(III) phosphate B) Iron diphosphate
C) Iron(II) phosphate D) Iron phosphate
3
, 31) What is the systematic name for Ag2Cr2O 7? 31)
A) Silver dichromate B) Silver chromate
C) Silver(I) dichromate D) Silver dichromium oxide
32) What is the formula of iron(III) perchlorate? 32)
A) FeCl3 B) Fe 2(ClO 3 ) 3 C) Fe(ClO 3 ) 3 D) Fe(ClO 4) 3
33) Which of the following names is NOT correct for the formula given? 33)
A) Manganese(II) nitrate, Mn(NO 3 ) 2 B) Magnesium(II) oxide, MgO
C) Copper(II) chloride, CuCl2 D) Cobalt(II) chloride, CoCl2
34) Which of the following names is correct for the formula given? 34)
A) Chromium chloride, CrCl2 B) Cupric chloride, CuCl 2
C) Ferric chloride, FeCl2 D) Manganese(II) chloride, MgCl2
35) What is the formula of chromium(III) acetate? 35)
A) Cr3 (CH3 CO 2) 2 B) Cr(CH3 CO 2) 3
C) Cr2(CH3 CO 2) 3 D) Cr(CH3 CO 2) 2
36) What is the formula for ferric sulfate? 36)
A) Fe(SO 4) 2 B) Fe 2(SO 4) 3 C) FeSO 4 D) Fe 3 (SO 4) 2
37) What is the formula for cupric hypochlorite? 37)
A) CuClO B) Cu(ClO) 3 C) Cu(ClO) 2 D) Cu(ClO 3 ) 2
38) What is the proper name for the compound P 4O 10 ? 38)
A) Phosphorus decaoxide B) Tetraphosphorus decoxide
C) Decaoxide tetraphosphorus D) Oxide phosphorus
39) What is the correct formula for dinitrogen pentoxide? 39)
A) NO 2NO 3 B) (N 2O5) 2 C) N 2O 5 D) (NO 5 ) 2
40) What is the proper name for the compound Se 2Cl5 ? 40)
A) Diselenium pentachloride B) Pentachloride diselenium
C) Selenium chloride D) Selenium pentachloride
41) In naming a covalent compound, which of the following is true? 41)
A) The name of the cation is listed first, followed by the name of the anion.
B) The charge in the ions is given in parentheses.
C) The prefixes bi and quatra are used for two and four.
D) The element farthest to the left in the periodic table is listed first.
42) When naming hydrocarbons, which of the following is NOT true? 42)
A) Numbers are always assigned from left to right.
B) The names of the branches are based on the number of carbon atoms they contain.
C) The longest unbranched chain is used to determine the parent compound.
D) The location of branches is specified by the number of the carbon where they are attached.
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