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Home
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Chemistry
WAEC 2007
Chemistry 2007 WAEC Past Questions
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Matter and Separation Techniques
Particulate Nature of Matter
BASIC CHEMISTRY
Chemical Combinations
Properties of Gases ( Gas Laws )
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Acids, Bases and Salts
Periodic Table
Air and Air Pollution
Water and Solubility Concept
Mass-Volume Concepts
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INORGANIC CHEMISTRY
Hydrogen ( Hydrides )
Oxygen ( Oxides - Ozone )
Carbon - Carbon Compounds
Nitrogen - Nitrogen Compounds
Phosphorus - Phosphorus Compounds
Sulphur - Sulphur Compounds
Halogen Family
Silicon and its Compounds
Metals and their Compounds 1
Transition Metals and their Compounds
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Basic Concepts of Organic Chemistry
Organic Chemistry 2
Applied Chemistry
Chemical Industry
The Solar System
Separation of mixtures and purification of chemical substance
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Elements, compounds and mixtures
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Laws of definite and multiple proportions
Law of conservation of matter
Gay Lussac's law of combining volumes
Avogadro's law
chemical symbols, formulae, equations and their uses
Relative atomic mass based on 12C-12
The mole concept and Avogadro's number
Kinetic Theory of Matter and Gas Laws
States of matter
Change of States of matter
Phenomena Supporting Kinetic theory-Diffusion and Osmosis
Assumptions of Kinetic theory of Gases
The Gas Laws: Boyle, Charles, Graham and Dalton (law of partial pressure), combined gas law
Molar volume and atomicity of gases
The ideal gas equation (PV = nRT)
The relationship between vapour density of gases and the relative molecular mass.
Atomic Structure and Bonding
The concept of atoms, molecules and ions, the works of Dalton, Millikan, Rutherford, Moseley, Thompson and Bohr
Atomic structure, electron configuration, atomic number, mass number and isotopes.
Shapes of S and P orbitals
The Periodic table and periodicity of elements
The variation of the following properties: ionization energy, ionic radii, electron affinity and electronegativity
Chemical bonding
Van der Waals' forces.
Shapes of simple molecules
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Water of crystallization, efflorescence, deliquescence and hygroscopy
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Hydrolysis of salts
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Reduction as removal of oxygen or addition of hydrogen.
Oxidation and reduction in terms of electron transfer
Use of oxidation numbers in defining REDOX reactions and balancing simple equations.
IUPAC nomenclature of inorganic compounds using oxidation number
Tests for oxidizing and reducing agents
Electrolysis
Electrolytes and non-electrolytes, and Faraday's laws of electrolysis
Electrolysis of dilute H2SO4, aqueous CuSO4, CuCl2 solution, dilute and concentrated NaCl solutions and fused NaCl
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Arrhenius’ law and Collision theory
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Definition of the following terminologies: systems, reactions and dynamic equilibrium.
Properties of a system in equilibrium
Factors governing the equilibrium position
Le Chatelier’s principle
Equilibrium constant
Non-metals and their compounds
Hydrogen and Hydrides
Halogens: Chlorine as a representative element of the halogen
Oxygen and Oxides
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Nitrogen and its compounds
Carbon: Allotropes, Uses and properties.
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General properties of metals
Alkali metals e.g. sodium
Alkaline-earth metals
Aluminium and its compound
Tin Extraction from its ores
Metals of the first transition series
Iron Extraction from sulphide and oxide ores
Copper Extraction from sulphide and oxide ores
Alloy
Organic Compounds
Introduction to the tetravalency of carbon
Alkanes: Homologous series in relation to physical properties
Alkenes: Isomerism (structural and geometric isomerism)
Alkynes: Ethyne
Aromatic hydrocarbons e.g. benzene - structure, properties and uses
Alkanols: Primary, secondary, tertiary
Alkanals and alkanones
Alkanoic acids
Alkanoates
Amines (Alkanamines): Primary, Secondary, and tertiary
Carbohydrates
Proteins: Primary structures, hydrolysis and tests
Enzymes and their functions
Polymers: Natural and synthetic rubber
Industrial Chemistry
Chemical industries: Types, raw materials and relevances
Economics of Industrial process
Importance of industrial chemistry in Nigeria
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6
Which of the following properties of atoms generally increases down a group in the periodic table?
A.
Electron affinity
B.
Electronegativity
C.
Ionic radius
D.
lonization energy
View Answer & Discuss
WAEC 2007
7
Which of the following statements about sodium is not true?
A.
Na
+
is smaller in size than Na
B.
Na is smaller in size than Na
+
C.
Na
+
has fewer electrons than Na
D.
The effective nuclear charge in Na
+
is greater than in Na
View Answer & Discuss (2)
WAEC 2007
8
If the difference between the electronegativities of two elements is large, the type of bond that can be formed between them is
A.
covalent
B.
dative
C.
ionic
D.
metallic
View Answer & Discuss
WAEC 2007
9
Which of the following compounds has hydrogen bonds between its molecules?
A.
HF
B.
HBr
C.
HCI
D.
HI.
View Answer & Discuss
WAEC 2007
10
Which of the following species does not contain a co-ordinate bond?
A.
AI
2
CI
6
B.
CCI
4
C.
H
3
O
+
D.
NH
+
4
View Answer & Discuss (15)
WAEC 2007
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