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Science U1 L2 All

Total questions: 167

Worksheet time: 3hrs 33mins

Name
Class
Date
1.
….. elements are the most stable elements
a)
Metals
b)
Nonmetals
c)
Noble gases
d)
Metalloids
2.
When a nonmetal gains or shares by two electrons, its valency will be
a)
monovalent
b)
divalent
c)
trivalent
d)
tetravalent
3.
All of the following elements are monovalent except
a)
hydrogen
b)
sodium
c)
oxygen
d)
chlorine
4.
All of the following elements are divalent except
a)
12Mg
b)
7N
c)
8O
d)
16S
5.
When an atom loses, gains or shares by one electron, its valency is
a)
monovalent
b)
divalent
c)
trivalent
d)
tetravalent
6.
The valency of ferrous is
a)
monovalent
b)
divalent
c)
trivalent
d)
tetravalent
7.
All of the following are nonmetals having more than one valency except
a)
copper
b)
phosphorus
c)
sulphur
d)
nitrogen
8.
In trivalent elements, the outermost energy level contains electrons
a)
(3) or (5)
b)
(5) or (6)
c)
(7) or (1)
d)
(6) or (3)
9.
The valency of argon (18Ar) is
a)
trivalent
b)
divalent
c)
monovalent
d)
zero
10.
The valency of copper in (Cu2O) is
a)
monovalent
b)
divalent
c)
trivalent
d)
tetravalent
11.
The chemical formula of carbonate group is
a)
(NO3)
b)
(SO4)
c)
(NH4)
d)
(CO3)
12.
All of the following are monovalent atomic groups except .......... group
a)
phosphate
b)
nitrate
c)
hydroxide
d)
bicarbonate
13.
Which of the following is a trivalent atomic group ?
a)
Hydroxide
b)
Sulphate
c)
Ammonium
d)
Phosphate
14.
Nitrate and nitrite groups are different in the
a)
type of atoms
b)
number of atoms
c)
valency
d)
type of charge
15.
Phosphate and sulphate groups are similar in the ..........
a)
type of atoms
b)
valency
c)
number of atoms
d)
no correct answer
16.
The nitrate group is a ….. radical
a)
monovalent
b)
divalent
c)
trivalent
d)
tetravalent
17.
All of these atomic groups carry the same charge except …..
a)
nitrite
b)
nitrate
c)
bicarbonate
d)
ammonium
18.
The molecules of sodium hydroxide, water and sulphuric acid share in the presence of …. in each of them
a)
hydrogen and nitrogen
b)
oxygen and sodium
c)
hydrogen and oxygen
d)
hydrogen and sodium
19.
The chemical formula of carbon dioxide(C02) shows that the valency of carbon is ….
a)
monovalent
b)
divalent
c)
trivalent
d)
tetravalent
20.
Element (M) form a compound M(OH)3 so, its valency is ….
a)
monovalent
b)
divalent
c)
trivalent
d)
tetravalent
21.
The chemical formula of calcium bicarbonate is ….
a)
CaCO3
b)
CaH(CO3)2
c)
Ca(HCO3)2
d)
Ca2HCO3
22.
Each aluminium atom (13Al) combines with …. atoms of chlorine (17Cl) to form aluminium chloride molecule.
a)
two
b)
three
c)
four
d)
five
23.
The chemical formula of sodium hydroxide is ….
a)
NaOH
b)
NaCO3
c)
NaHCO3
d)
Na2(CO3)2
24.
The chemical formula of sulphuric acid is ….
a)
H2O
b)
HCl
c)
H2SO4
d)
HNO3
25.
Sulphuric acid is composed of
a)
five atoms of three different elements
b)
six atoms of three different elements
c)
seven atoms of three different elements
d)
eight atoms of four different elements
26.
In ammonia molecule (NH3) the number 3 refers to the number of ….
a)
N & H atoms in one molecule
b)
H atoms in one molecule
c)
the valency of hydrogen
d)
N atoms in one molecule
27.
The chemical formula of sodium nitrite is
a)
NaNO
b)
NaNO3
c)
NaNO2
d)
Na2NO3
28.
In the compound X(NO3)2 , the valency of element (X) is
a)
monovalent
b)
divalent
c)
trivalent
d)
tetravalent
29.
The number of atoms in ammonium nitrate molecule equals
a)
5
b)
7
c)
8
d)
9
30.
When an acid dissolves in water, it produces …. ions
a)
(OH)+
b)
H-
c)
H+
d)
(OH)-
31.
When an alkali (base) dissolves in water, it gives …. ions
a)
H+
b)
(OH)-
c)
(OH)-2
d)
(OH)+
32.
All of these substances turn litmus paper into red except
a)
HCl
b)
HNO3
c)
NaOH
d)
H2SO4
33.
Mona bought a cup of yogurt and found the taste is sour, so she concluded that it contains a compound from
a)
acids
b)
bases
c)
salts
d)
oxides
34.
All of these substances turn litmus paper into blue except ....
a)
NaOH
b)
KOH
c)
Ca(OH)2
d)
HBr
35.
All of the aqueous solutions of the following compounds have bitter taste except
a)
sodium hydroxide
b)
sulphuric acid
c)
calcium hydroxide
d)
potassium hydroxide
36.
All of these are nonmetal oxides except .......
a)
CO2
b)
P2O5
c)
SO3
d)
Al2O3
37.
Sodium chloride is .......
a)
an acid
b)
an oxide
c)
a base
d)
a salt
38.
The salt that is formed on the combination of a positive metal ion with a negative atomic group is
a)
NaCI
b)
Na2CO3
c)
(NH4)2SO4
d)
NaBr
39.
On the combination of (Mg)+2 Ion with (CO3)-2 group, …. is formed
a)
an acid
b)
a base
c)
an oxide
d)
a salt
40.
The sail that is formed on the combination of a positive atomic group with a negative atomic group is
a)
NH4C1
b)
(NH4)2CO3
c)
Na2SO4
d)
NH4Br
41.
Ammonium chloride salt is formed on the combination of
a)
a positive metal ion with a negative atomic group
b)
a positive metal ion with a negative nonmetal ion
c)
a negative non met al ion with a positive atomic group
d)
a negative nonmetal ion with a negative nonmetal ion
42.
All of these salts dissolve in water except
a)
sodium chloride
b)
potassium sulphate
c)
silver chloride
d)
soduim sulphide
43.
An element of atomic number 20 , so its valency is divalent
a)
true
b)
false
44.
Ferrous carries three negative charges
a)
true
b)
false
45.
Water molecule consists of four atoms for two elements
a)
true
b)
false
46.
The valency of noble gases is monovalent
a)
true
b)
false
47.
The atomic group acts as a compound in the chemical reaction
a)
true
b)
false
48.
Both nitrate and nitrite groups have the same valency
a)
true
b)
false
49.
The chemical formula indicates the type and the number of atoms in a certain molecule
a)
true
b)
false
50.
The chemical formula of carbonate group is (HCO3)-
a)
true
b)
false
51.
In the compound (XY2), (Y) is divalent and (X) is monovalent
a)
true
b)
false
52.
A compound (X2O3), then the valency of element (X) is monovalent
a)
true
b)
false
53.
Both lithium bicarbonate and sodium carbonate have the same number of atoms
a)
true
b)
false
54.
The molecule of sodium sulphate consists of three different elements
a)
true
b)
false
55.
The chemical formula of calcium carbonate is (CaCO3)
a)
true
b)
false
56.
The chemical formula of aluminium sulphate is Al3(SO4)2
a)
true
b)
false
57.
(SO2) is the symbol of sodium oxide
a)
true
b)
false
58.
The chemical formula of silver nitrate is (AgNO3)
a)
true
b)
false
59.
The valency of sodium in (NaCl) is monovalent, while it is divalent in (Na2CO3)
a)
true
b)
false
60.
Table salt is formed of two divalent elements.
a)
true
b)
false
61.
The chemical formula of calcium hydroxide molecule is (CaOH).
a)
true
b)
false
62.
The chemical formula of nitric acid is (HNO3), while that of sulphuric acid is (H2S)
a)
true
b)
false
63.
The valency of sulphur in sulphur trioxide (SO3) is tetravalent.
a)
true
b)
false
64.
Oxides are substances that dissociate in water producing positive hydrogen ions
a)
true
b)
false
65.
Sodium hydroxide changes the colour of litmus paper into red.
a)
true
b)
false
66.
Mineral acids arc formed when hydrogen joined with a negative atomic group except nitrate group
a)
true
b)
false
67.
When an element (11Z) combines with oxygen, it produces (ZO) oxide which is a metal oxide
a)
true
b)
false
68.
Aluminium oxide is a metal oxide, while carbon dioxide is a nonmetal oxide.
a)
true
b)
false
69.
Caustic soda and limewater are from bases, while magnesium carbonate is from salts
a)
true
b)
false
70.
The combination of metals with oxygen form oxides, while its combination with nonmetals form bases
a)
true
b)
false
71.
Sodium chloride is considered a base
a)
true
b)
false
72.
Silver chloride is water soluble, while sodium chloride is water insoluble
a)
true
b)
false
73.
1. The number of electrons gained, lost or even shared by an atom during a chemical reaction.
a)
Valency
b)
Atomic group
c)
Chemical formula
d)
Nonmetal oxides
74.
Elements, their valencies are zero
a)
noble gases
b)
Metal oxides
c)
Acids
d)
Nonmetal oxides
75.
A set of atoms joined together, behave like one atom only, having a certain valency and it can’t be existed solely
a)
Atomic group
b)
Valency
c)
Chemical formula
d)
Nonmetal oxides
76.
A formula represents the number and the type of atoms in a molecule.
a)
Chemical formula
b)
Nonmetal oxides
c)
Valency
d)
Atomic group
77.
Compounds are dissolved (dissociated) in water producing positive hydrogen ions H+
a)
Acids
b)
Bases
c)
Oxides
d)
Salts
78.
Compounds have sour taste and turn litmus paper into red.
a)
Acids
b)
Bases
c)
Oxides
d)
Salts
79.
Compounds (substances) are dissociated in water producing negative hydroxide ions (OH)-
a)
Bases
b)
Acids
c)
Salts
d)
Oxides
80.
Compounds have bitter taste and turn litmus paper into blue.
a)
Bases
b)
Acids
c)
Salts
d)
Oxides
81.
Compounds resulted from the combination between oxygen and an element even though it is a metal or a nonmetal
a)
Oxides
b)
Salts
c)
Acids
d)
Bases
82.
Oxides produced due to the combination of oxygen with a metal
a)
Metal oxides
b)
Valency
c)
Atomic group
d)
Chemical formula
83.
Oxides produced due to the combination of oxygen with a nonmetal
a)
Nonmetal oxides
b)
Chemical formula
c)
Valency
d)
Atomic group
84.
Compounds produced as a result of the chemical combination of a positive metal ion (or a positive atomic group) with a negative atomic group (or a negative nonmetal ion except oxygen).
a)
Salts
b)
Acids
c)
Bases
d)
Oxides
85.
1.The valency of metals may be ….... , ….. or trivalent as their outermost energy shells have 1 , 2 or 3 electrons.
a)
monovalent - divalen
b)
trivalent - divalent
c)
trivalent - pentavalent
d)
divalent - monovalent
86.
The valency of aluminium (27/13Al) is ….. while that of calcium (40/20Ca) is …..
a)
trivalent - divalent
b)
monovalent - divalen
c)
trivalent - pentavalent
d)
divalent - monovalent
87.
Some metallic elements have more than one valency, such as ….. and …...
a)
iron - copper
b)
Hydroxide - nitrate
c)
nitrate - carbonate
d)
Oxides - Acids
88.
The valency of iron is ….. in ferrous chloride, while in ferric chloride is …..
a)
divalent - trivalent
b)
trivalent - divalent
c)
divalent - monovalent
d)
trivalent - divalent
89.
Some nonmetallic elements have more than one valency such as ..…. and …...
a)
nitrogen - sulphur
b)
iron - copper
c)
nitrogen - Oxgeyn
d)
soduim - magnesium
90.
The valency of a sulphur atom may be ….. , ….. and …...
a)
divalent - tetravalent - hexavalent
b)
monovalent - divalent - tetravalent
c)
tetravalent - hexavalent - pentavalent
d)
trivalent - hexavalent - pentavalent
91.
Phosphorus element has two valencies which are …. and …..
a)
trivalent - pentavalent
b)
monovalent - divalen
c)
trivalent - divalent
d)
trivalent - divalent
92.
The valency of noble gases is ….. as their outermost energy level is …... with electrons
a)
zero - completely filled
b)
two - completely filled
c)
one - completely filled
d)
zero - postive ion
93.
The valency of (39/19K) is ….. , while the valency of (S04)-2 is …...
a)
monovalent - divalent
b)
trivalent - divalent
c)
trivalent - pentavalent
d)
divalent - monovalent
94.
The valency of a carbonate group is …... , while that of a bicarbonate group is …..
a)
divalent - monovalent.
b)
divalent - trivalent
c)
trivalent - divalent
d)
trivalent - pentavalent
95.
The symbol of phosphate group is ….. , and its valency is …..
a)
(PO4)-3 - trivalent.
b)
(CaOH) - monovalent
c)
(HNO3) - trivalent.
d)
(PO4)-3 - divalent
96.
The different symbol elements of sulphate . group is ….. and it is formed of …... atoms of two different symbol elements.
a)
(SO4)-2 - five
b)
(SO4)-2 - four
c)
(SO4)-3 - five
d)
(SO4)-5 - six
97.
The difference between nitrate group and nitrite group is one …... Atom
a)
oxygen
b)
Nitrate
c)
nitrogen
d)
Phosphate
98.
The chemical formula of sodium carbonate is ….. and it consists of …... atoms of three different elements
a)
Na2CO3 - six
b)
NaCl - six
c)
Na2CO3 - five
d)
NaOH - five
99.
If the chemical formula of aluminium sulphate is Al2(SO4)3 , So the valency of aluminium atom is ….. , while the valency of sulphate group is …...
a)
trivalent- divalent
b)
divalent - monovalent.
c)
trivalent - pentavalent
d)
divalent - trivalent
100.
The chemical formula of magnesium sulphate is ….. , while that of calcium nitrate is …...
a)
MgSO4 - Ca(NO3)2
b)
MgSO4 - Ca(SO4)2
c)
MgPO4 - Ca(NO3)2
d)
MgSO4 - Ca(HNO4)3
101.
The chemical formula of hydrochloric acid is ….. , but the chemical formula of sodium hydroxide is …...
a)
HCI - NaOH
b)
CaOH - NaOH
c)
HCI - NaCl
d)
MgSO4 - Ca(HNO4)3
102.
The chemical formula of water is …... , but the chemical formula of sulphuric acid is …...
a)
H2O - H2SO4
b)
H2O - NaOH
c)
HCl - H2SO4
d)
H2O - HNO3
103.
A compound has a chemical formula (X02) , so the valency of (X) is …..
a)
tetravalent
b)
trivalent
c)
pentavalent
d)
monovalent.
104.
the valency of calcium is ….. and when it combines with phosphate group , a compound is formed its formula is …...
a)
divalent - Ca3(PO4)2
b)
monovalent - Ca3(PO4)2
c)
trivalent - Ca3(PO4)2
d)
divalent - Ca3(SO4)3
105.
(Na2O) is the chemical formula of …... , while the chemical formula of magnesium carbonate is …...
a)
sodium oxide - MgCO3
b)
Potassium oxide - MgCO3
c)
sodium oxide - H2SO4
d)
Silver oxide - MgCO3
106.
The valency of sodium in sodium carbonate (Na2CO3) is …... and its valency in sodium chloride (NaCl) is …..
a)
monovalent - monovalent
b)
trivalent - divalent
c)
divalent - monovalent
d)
trivalent - pentavalent
107.
Compounds are classified according to their properties into …... , bases , …... and salts
a)
acids - oxides
b)
salts - oxides
c)
acids - Nitrate
d)
salts - Phosphate
108.
On dissolving in water, acids give positive ….. ions and alkalis give negative ….. Ions
a)
hydrogen - hydroxide
b)
Hydroxide - nitrate
c)
nitrogen - sulphur
d)
Oxides - Acids
109.
Acids have sour taste and change the colour of litmus paper into ….. , while bases have ….. taste and change the colour of litmus paper into blue
a)
red - bitter
b)
blue - bitter
c)
red - sour
d)
blue - sour
110.
…... And …... are examples of bases
a)
NaOH - Mg(OH)2
b)
NaOH - H2O
c)
CaOH - NaOH
d)
MgSO4 - Ca(HNO4)3
111.
….... is from acids that contain oxygen, while ….. is from acids that doesn’t contain oxygen
a)
Sulphuric acid - hydrochloric acid
b)
sodium acid - hydrochloric acid
c)
Sulphuric acid - magnesium acid
d)
Phosphate acid - hydrochloric acid
112.
(H2SO4) is …... , while NaOH is …...
a)
an acid - a base
b)
an acid - an oxide
c)
an oxide - a base
d)
an acid - a salt
113.
The symbols of all mineral acids begin with …. atom, while the symbols of all bases end with ….. group
a)
hydrogen - hydroxide
b)
nitrogen - hydroxide
c)
hydrogen - oxide
d)
nitrogen - oxide
114.
….. is an example of metal oxides, while …... is an example of nonmetal oxides
a)
Sodium oxide - carbon dioxide
b)
Potassium oxide - carbon dioxide
c)
Sodium oxide - Phosphate dioxide
d)
Potassium oxide - Phosphate dioxide
115.
Sodium sulphide is from the salts that …... in water, while lead sulphate is from<br /> the salts that …... In water
a)
soluble - insoluble
b)
insoluble - soluble
c)
soluble - soluble
d)
insoluble - insoluble
116.
1.Choose the odd word (or formula) : Lithium / Silver / Aluminium / Sodium
a)
Aluminium
b)
Sodium
c)
Silver
d)
Lithium
117.
Choose the odd word (or formula) : Calcium / Magnesium / Lead / Oxygen
a)
Oxygen
b)
Lead
c)
Magnesium
d)
Calcium
118.
Choose the odd word (or formula) : Phosphorus / Nitrogen / Sulphur / Chlorine
a)
Chlorine
b)
Sulphur
c)
Nitrogen
d)
Phosphorus
119.
Choose the odd word (or formula) : Bromine / Chlorine / Iodine / Potassium
a)
Potassium
b)
Iodine
c)
Chlorine
d)
Bromine
120.
Choose the odd word (or formula) : Zinc / Calcium / Mercury / Aluminium / Lead
a)
Aluminium
b)
Calcium
c)
Lead
d)
Zinc
121.
Choose the odd word (or formula) : Ammonium / Phosphate / Carbonate / Nitrate
a)
Ammonium
b)
Phosphate
c)
Carbonate
d)
Nitrate
122.
Choose the odd word (or formula) : NaOH / Ca(OH)<br />2 / KOH / HCl
a)
HCl
b)
NaOH
c)
Ca(OH)2
d)
KOH
123.
Choose the odd word (or formula) : Al2O3 / SO3 / SO2 / CO2
a)
Al2O3
b)
SO3
c)
SO2
d)
CO2
124.
Choose the odd word (or formula) : K2O / Al2O3 / SO3 / CaO
a)
SO3
b)
CaO
c)
K2O
d)
Al2O3
125.
Choose the odd word (or formula) : H2O / HBr / HCl / HNO3
a)
H2O
b)
HBr
c)
HCl
d)
HNO3
126.
Choose the odd word (or formula) : NaCl / K<br />2SO4 / AgCl / Na2S
a)
AgCl
b)
Na2S
c)
2SO4
d)
NaCl
127.
1.The number of electrons gained, lost or even shared by an atom during a chemical reaction.
a)
Valency
b)
Atomic group
c)
Chemical formula
d)
Nonmetal oxides
128.
Elements, their valencies are zero
a)
noble gases
b)
Metal oxides
c)
Acids
d)
Nonmetal oxides
129.
A set of atoms joined together, behave like one atom only, having a certain valency and it can’t be existed solely
a)
Atomic group
b)
Valency
c)
Chemical formula
d)
Nonmetal oxides
130.
A formula represents the number and the type of atoms in a molecule.
a)
Chemical formula
b)
Nonmetal oxides
c)
Valency
d)
Chemical formula
131.
Compounds are dissolved (dissociated) in water producing positive hydrogen ions H+
a)
Acids
b)
Bases
c)
Oxides
d)
Salts
132.
Compounds have sour taste and turn litmus paper into red.
a)
Acids
b)
Bases
c)
Oxides
d)
Salts
133.
Compounds (substances) are dissociated in water producing negative hydroxide ions (OH)-
a)
Bases
b)
Acids
c)
Salts
d)
Oxides
134.
Compounds have bitter taste and turn litmus paper into blue.
a)
Bases
b)
Acids
c)
Salts
d)
Oxides
135.
Compounds resulted from the combination between oxygen and an element even though it is a metal or a nonmetal
a)
Oxides
b)
Salts
c)
Acids
d)
Bases
136.
Oxides produced due to the combination of oxygen with a metal
a)
Metal oxides
b)
Valency
c)
Atomic group
d)
Chemical formula
137.
Oxides produced due to the combination of oxygen with a nonmetal
a)
Nonmetal oxides
b)
Chemical formula
c)
Valency
d)
Atomic group
138.
Compounds produced as a result of the chemical combination of a positive metal ion (or a positive atomic group) with a negative atomic group (or a negative nonmetal ion except oxygen).
a)
Salts
b)
Acids
c)
Bases
d)
Oxides
139.
1. Give an example of A monovalent metallic element
a)
Sodium (Na)
b)
Nitrogen (N)
c)
Argon (Ar)
d)
Hydrogen (H)
140.
Give an example of A monovalent nonmetallic element
a)
Hydrogen (H)
b)
Sodium (Na)
c)
Nitrogen (N)
d)
Argon (Ar)
141.
Give an example of A divalent nonmetallic element
a)
Oxygen (0)
b)
Hydrogen (H)
c)
Sodium (Na)
d)
Nitrogen (N)
142.
Give an example of A trivalent nonmetallic element
a)
Nitrogen (N)
b)
Sodium (Na)
c)
Argon (Ar)
d)
Hydrogen (H)
143.
Give an example of An element, its valency is zero
a)
Argon (Ar)
b)
Hydrogen (H)
c)
Sodium (Na)
d)
Nitrogen (N)
144.
Give an example of A monovalent atomic group
a)
Nitrate group (NO3)
b)
Phosphate group (PO4)
c)
Sulphate group (SO4)
d)
Sodium hydroxide (NaOH)
145.
Give an example of A trivalent atomic gioup
a)
Phosphate group (PO4)
b)
Nitrate group (NO3)
c)
Sulphate group (SO4)
d)
Sodium hydroxide (NaOH)
146.
Give an example of A divalent atomic group
a)
Sulphate group (SO4)
b)
Nitrate group (NO3)
c)
Phosphate group (PO4)
d)
Sodium hydroxide (NaOH)
147.
Give an example of A base
a)
Sodium hydroxide (NaOH)
b)
Hydrochloric acid (HCl)
c)
Aluminium oxide (A12O3)
d)
Sulphuric acid (H2SO4)
148.
Give an example of An acid doesn’t contain oxygen
a)
Hydrochloric acid (HCl)
b)
Sodium hydroxide (NaOH)
c)
Aluminium oxide (A12O3)
d)
Sulphuric acid (H2SO4)
149.
Give an example of A metal oxide
a)
Aluminium oxide (A12O3)
b)
Hydrochloric acid (HCl)
c)
Sodium hydroxide (NaOH)
d)
Sulphuric acid (H2SO4)
150.
Give an example of An acid contains oxygen
a)
Sulphuric acid (H2SO4)
b)
Aluminium oxide (A12O3)
c)
Hydrochloric acid (HCl)
d)
Sodium hydroxide (NaOH)
151.
Give an example of Water insoluble salt
a)
Silver chloride (AgCl)
b)
Sodium chloride (NaCI)
c)
Sodium hydroxide (NaOH)
d)
Aluminium oxide (A12O3)
152.
Give an example of Water soluble salt
a)
Sodium chloride (NaCI)
b)
Silver chloride (AgCl)
c)
Sodium hydroxide (NaOH)
d)
Aluminium oxide (A12O3)
153.
Give an example of A compound turns the red litmus paper into blue
a)
Sodium hydroxide (NaOH)
b)
Sodium chloride (NaCI)
c)
Silver chloride (AgCl)
d)
Aluminium oxide (A12O3)
154.
1 . Write the names of CaSO4
a)
Calcium sulphate
b)
Calcium hydroxide
c)
Calcium carbonate
d)
Aluminium sulphate
155.
Write the names of LiHC03
a)
Lithium bicarbonate
b)
Calcium carbonate
c)
Lithium hydroxide
d)
Lithium sulphate
156.
Write the names of Mg(OH)2
a)
Magnesium hydroxide
b)
Magnesium phosphate
c)
Magnesium sulphate
d)
Calcium hydroxide
157.
Write the names of H2SO4
a)
Sulphuric acid
b)
Sulphuric nitrate
c)
Sulphuric dioxide
d)
Calcium acid
158.
Write the names of Na3PO4
a)
Sodium phosphate
b)
Sodium nitrate
c)
Sodium sulphate
d)
Sodium hydroxide
159.
Write the names of KNO3
a)
Potassium nitrate
b)
Potassium phosphate
c)
Potassium sulphate
d)
Potassium hydroxide
160.
Write the names of Mg3(P04)2
a)
Magnesium phosphate
b)
Magnesium hydroxide
c)
Magnesium sulphate
d)
Calcium hydroxide
161.
Write the names of CO2
a)
Carbon dioxide
b)
Carbon hydroxide
c)
Carbon sulphate
d)
Carbon phosphate
162.
Write the names of Al2(SO4)3
a)
Aluminium sulphate
b)
Aluminium dioxide
c)
Aluminium hydroxide
d)
Aluminium phosphate
163.
Write the names of NaNO3
a)
Sodium nitrate
b)
Sodium phosphate
c)
Sodium sulphate
d)
Sodium hydroxide
164.
Write the names of Ca(OH)2
a)
Calcium hydroxide
b)
Calcium sulphate
c)
Calcium carbonate
d)
Calcium sulphate
165.
Write the names of Ca3(PO4)2
a)
Calcium phosphate
b)
Calcium hydroxide
c)
Calcium sulphate
d)
Calcium carbonate
166.
Write the names of CaCO3
a)
Calcium carbonate
b)
Calcium phosphate
c)
Calcium hydroxide
d)
Calcium sulphate
167.
Write the names of HCl
a)
Hydrochloric acid
b)
Hydrochloric hydroxide
c)
Hydrochloric dioxide
d)
Hydrochloric phosphate