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WorksheetsUnit 7 - Naming and Formulas
Total questions: 75
Worksheet time: 50mins
Name
Class
Date
1.
Which of the following is an ionic compound?
a)
CO₂
b)
H₂O
c)
NaCl
d)
CH₄
e)
O₂
2.
Covalent compounds typically form between what types of elements?
a)
metals and nonmetals
b)
nonmetals and nonmetals
c)
metals and metals
d)
metalloids and metals
e)
metalloids and nonmetals
3.
Which of these is classified as an acid?
a)
CH₄
b)
NaOH
c)
H₂SO₄
d)
CaCl₂
e)
NH₃
4.
NaCl, MgO, and LiF are all examples of what?
a)
molecular compounds
b)
covalent compounds
c)
acids
d)
ionic compounds
e)
binary acids
5.
Classify HCl(aq)
a)
covalent
b)
binary acid
c)
ionic
d)
metallic
e)
oxyacid
6.
Which type of compound uses Roman numerals in naming?
a)
Binary acids
b)
Covalent compounds
c)
Ternary acids
d)
Transition metal ionic compounds
e)
All ionic compounds
7.
Covalent compounds are often identified by...
a)
metal first
b)
Roman numerals
c)
prefixes like di-, tri-
d)
‘hydro’ in the name
e)
polyatomic ions
8.
What is the main characteristic of an acid compound?
a)
Contains OH⁻
b)
Contains metal
c)
Releases H⁺ in water
d)
Is always covalent
e)
Is always ionic
9.
What is the name of FeCl₃?
a)
iron chloride
b)
iron(I) chloride
c)
iron(III) chloride
d)
iron(II) chloride
e)
ferrous chloride
10.
Name the compound: Cu₂O
a)
copper(II) oxide
b)
copper(I) oxide
c)
copper monoxide
d)
dicopper oxide
e)
copper oxide
11.
Which name is correct for SnO₂?
a)
tin(IV) oxide
b)
tin(II) oxide
c)
tin dioxide
d)
stannic oxide
e)
monotin dioxide
12.
Which formula matches lead(II) sulfide?
a)
Pb₂S₃
b)
Pb₂S
c)
PbS₂
d)
PbS
e)
PbSO₄
13.
Choose all compounds that require a Roman numeral in the name.
a)
FeCl₂
b)
CaBr₂
c)
Cu₂O
d)
NaNO₃
e)
SnO₂
14.
Which of these names is incorrect?
a)
iron(II) chloride – FeCl₂
b)
copper(I) oxide – Cu₂O
c)
tin(II) oxide – SnO₂
d)
lead(IV) nitrate – Pb(NO₃)₄
e)
iron(III) oxide – Fe₂O₃
15.
Which of the following correctly pairs the formula and name?
a)
FeCl₃ – iron(II) chloride
b)
PbO – lead(I) oxide
c)
CuBr – copper(I) bromide
d)
SnS – tin(IV) sulfide
e)
Fe₂O₃ – iron(I) oxide
16.
Write the name for MnO₂
(a)
17.
Which of these does NOT require a Roman numeral?
a)
Fe₂O₃
b)
ZnCl₂
c)
CuCl
d)
SnO
e)
PbO₂
18.
What is the name of Cr₂S₃?
(a)
19.
Which prefix means 'five'?
a)
mono
b)
tetra
c)
penta
d)
hexa
e)
deca
20.
What is the correct name for CO₂?
a)
carbon oxide
b)
carbon monoxide
c)
carbon dioxide
d)
carbon(II) oxide
e)
monocarbon dioxide
21.
Name the compound: N₂O₅
(a)
22.
Which of these is the correct name for SF₆?
a)
sulfur hexafluoride
b)
sulfur fluoride
c)
sulfur heptafluoride
d)
sulfur(IV) fluoride
e)
sulfur(IV) hexide
23.
Choose all correct covalent names.
a)
carbon dioxide
b)
sodium chloride
c)
dinitrogen tetroxide
d)
ammonium nitrate
e)
phosphorus trichloride
24.
What is the name of PCl₅?
(a)
25.
Which is a covalent compound?
a)
NaBr
b)
CO
c)
KNO₃
d)
CaF₂
e)
FeCl₃
26.
Which of the following is a binary acid?
a)
H₂SO₄
b)
HCl
c)
HNO₃
d)
CH₃COOH
e)
H₂CO₃
27.
What is the name of HNO₃?
a)
nitric acid
b)
nitrous acid
c)
hydronitric acid
d)
nitrate acid
e)
nitrogenic acid
28.
Name the acid: H₂SO₄
(a)
29.
Which of the following correctly matches name and formula?
a)
hydrosulfuric acid – H₂SO₄
b)
sulfuric acid – H₂SO₃
c)
nitrous acid – HNO₂
d)
acetic acid – H₂C₂O₄
e)
phosphoric acid – H₃PO₂
30.
Choose all binary acids from the list.
a)
HBr
b)
HCl
c)
HF
d)
H₂SO₄
e)
HNO₃
31.
Which acid name is correct for H₃PO₄?
a)
phosphoric acid
b)
phosphorous acid
c)
triphosphoric acid
d)
hydrophosphoric acid
e)
phosphate acid
32.
What is the name of H₂S?
a)
sulfurous acid
b)
sulfuric acid
c)
hydrosulfuric acid
d)
sulfide acid
e)
hydrosulfurous acid
33.
Write the formula for calcium nitrate.
(a)
34.
What is the formula for potassium sulfide?
(a)
35.
Which of the following is the correct name for Na₂CO₃?
a)
sodium carbonite
b)
disodium carbonate
c)
sodium carbonate
d)
sodium bicarbonate
e)
sodium carbonate(II)
36.
Write the name for Cu(NO₃)₂.
a)
copper(I) nitrate
b)
copper(II) nitrate
c)
copper nitrate
d)
copper(III) nitrate
e)
copper nitrite
37.
Which formula matches iron(II) phosphate?
a)
FePO₄
b)
Fe₃(PO₄)₂
c)
Fe₂(PO₄)₃
d)
FePO₃
e)
Fe(PO₄)₂
38.
Name the compound: PbO₂
a)
lead(II) oxide
b)
lead(IV) oxide
c)
lead oxide
d)
plumbic oxide
e)
lead(III) oxide
39.
Which name matches the formula: NH₄Cl?
a)
ammonium chloride
b)
ammonium chlorate
c)
ammonia chloride
d)
nitrogen(IV) chloride
e)
ammonia monochloride
40.
Write the formula for magnesium acetate.
(a)
41.
What is the name of Ba(OH)₂?
a)
barium dihydroxide
b)
barium(II) hydroxide
c)
barium hydroxide
d)
barium hydride
e)
dibarium hydroxide
42.
Which of the following is the correct name for FeCl₂?
a)
iron dichloride
b)
iron(II) chloride
c)
ferrous chloride
d)
iron(I) chloride
e)
iron chloride
43.
Which formula-name pair is incorrect?
a)
KNO₃ – potassium nitrate
b)
MgCl₂ – magnesium chloride
c)
CaSO₄ – calcium sulfide
d)
Na₂CO₃ – sodium carbonate
e)
CuCl₂ – copper(II) chloride
44.
Find the mistake: 'CO – carbon dioxide'
a)
No mistake
b)
Should be carbon oxide
c)
Should be carbon monoxide
d)
Should be carbon(II) oxide
e)
Needs Roman numeral
45.
Which name is valid for molecular compounds?
a)
iron dichloride
b)
sodium monoxide
c)
carbon dioxide
d)
ammonium oxide
e)
calcium dioxide
46.
Which is the error in naming SnCl₄?
a)
Should be tin(I) chloride
b)
Should be tin(IV) chloride
c)
Should be stannic chloride
d)
Should be tin dichloride
e)
Correct as is
47.
What is wrong with 'Fe₂O₃ – iron(II) oxide'?
a)
Nothing
b)
Fe charge wrong
c)
O count wrong
d)
Fe formula wrong
e)
Iron should be iron(III)
48.
Which formula is correct for copper(I) nitrate?
a)
CuNO₃
b)
Cu(NO₃)
c)
Cu₂NO₃
d)
Cu₂(NO₃)
e)
Cu(NO₃)₂
49.
Name the compound: Zn₃(PO₄)₂
(a)
50.
What type of compound is found in baking soda (NaHCO₃)?
a)
binary acid
b)
ionic compound
c)
covalent compound
d)
organic acid
e)
polyatomic acid
51.
What is the correct name for Epsom salt (MgSO₄)?
a)
magnesium sulfate
b)
magnesium sulfite
c)
magnesium hydrogen sulfate
d)
magnesium sulfide
e)
magnesium hydroxide
52.
Which household compound is ammonia?
a)
NH₄Cl
b)
NH₃
c)
NaOH
d)
HCl
e)
CH₃COOH
53.
Write the formula for calcium carbonate, found in limestone.
(a)
54.
Vinegar is a solution of what acid?
a)
sulfuric acid
b)
hydrochloric acid
c)
nitric acid
d)
acetic acid
e)
carbonic acid
55.
What is the name of the compound in bleach: NaClO?
a)
sodium chlorate
b)
sodium chloride
c)
sodium hypochlorite
d)
sodium perchlorate
e)
sodium hydroxide
56.
Name the acid found in soda: H₂CO₃.
(a)
57.
Which real-world compound is correctly named?
a)
CaCl₂ – calcium chlorite
b)
CH₃COOH – acetic acid
c)
NaOH – sodium oxide
d)
H₂SO₄ – sulfurous acid
e)
HNO₂ – nitric acid
58.
Name the compound: NaCl
(a)
59.
Write the formula: potassium iodide
(a)
60.
Name the compound: CO₂
(a)
61.
Write the formula: hydrochloric acid
(a)
62.
Name the compound: NH₄NO₃
(a)
63.
Write the formula: sulfuric acid
(a)
64.
Name the compound: Ca(OH)₂
(a)
65.
Write the formula: dinitrogen pentoxide
(a)
66.
Name the compound: HNO₂
(a)
67.
Which of the following is a covalent compound?
a)
NaCl
b)
MgO
c)
CO
d)
CaF₂
e)
KBr
68.
What is the name of N₂O?
(a)
69.
Write the formula for hydrosulfuric acid.
(a)
70.
Which is the correct formula for iron(III) chloride?
a)
FeCl
b)
FeCl₂
c)
Fe₂Cl
d)
FeCl₃
e)
Fe₃Cl
71.
Which pair is incorrectly matched?
a)
SO₃ – sulfur trioxide
b)
FeCl₂ – iron(II) chloride
c)
HCl – hydrochloric acid
d)
CO – carbon dioxide
e)
NO₂ – nitrogen monoxide
72.
Choose all correct formulas for binary ionic compounds.
a)
NaCl
b)
KBr
c)
MgO
d)
HNO₃
e)
CH₄
73.
Write the formula for barium phosphate.
(a)
74.
Which is a valid covalent formula-name pair?
a)
CO – carbon monoxide
b)
Na₂O – disodium monoxide
c)
MgCl₂ – magnesium dichloride
d)
FeO – iron oxide
e)
NH₄Cl – ammonia chloride
75.
Name the compound: SO₃
(a)
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