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Home
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Chemistry
WAEC 2004
Chemistry 2004 WAEC Past Questions
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Matter and Separation Techniques
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BASIC CHEMISTRY
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Periodic Table
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INORGANIC CHEMISTRY
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Carbon - Carbon Compounds
Nitrogen - Nitrogen Compounds
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Halogen Family
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Metals and their Compounds 1
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Basic Concepts of Organic Chemistry
Organic Chemistry 2
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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
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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
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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
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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
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Van der Waals' forces.
Shapes of simple molecules
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Water of crystallization, efflorescence, deliquescence and hygroscopy
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Acid/base titrations.
Hydrolysis of salts
Oxidation and Reduction (REDOX) Reactions
Oxidation in terms of the addition of oxygen or removal of hydrogen.
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
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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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Properties of a system in equilibrium
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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.
Metals and their compounds
General properties of metals
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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
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Amines (Alkanamines): Primary, Secondary, and tertiary
Carbohydrates
Proteins: Primary structures, hydrolysis and tests
Enzymes and their functions
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Chemical industries: Types, raw materials and relevances
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Importance of industrial chemistry in Nigeria
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1
The mass of an element is 27 and its atomic number is 13. What is the composition of the nucleus of its atom?
A.
13 electrons and 14 protons
B.
13 neutrons and 14 protons
C.
13 protons and 14 neutrons
D.
13 electrons and 14 neutrons
View Answer & Discuss
WAEC 2004
2
Which of the following electron transition results in the emission of energy?
A.
3p to 3s
B.
3p to 4p
C.
2s to 2p
D.
1s to 2s
View Answer & Discuss (1)
WAEC 2004
3
Which of the following properties of elements deceases generally across a period in the Periodic Table?
A.
Electronegativy
B.
Electron affinity
C.
Atomic radluc
D.
lonlzation energy
View Answer & Discuss
WAEC 2004
4
Which of the electrons in the following orbitals will experience the greatest nuclear attraction?
A.
1s electron of helium
B.
1s electron of potassium
C.
23 electron of boron
D.
2s electron of carbon
View Answer & Discuss (9)
WAEC 2004
5
A nuclide emits a beta-particle (e) in the process, that atomic number
A.
increases by 1 while the mass numer remains constant
B.
decreases by 2 while the mass number remains constant
C.
remains constant while the mass number decreases by 2
D.
remains constant while the mass number increases by 1
View Answer & Discuss (2)
WAEC 2004
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