SPM Form 5 Chemistry

01 Redox Equilibrium
1.1 Oxidation and reduction
9 Topics | 12 Quizzes
1.1.1 Redox Reaction in Terms of Gain and Loss of Oxygen/Hydrogen
1.1.1.1 Oxidation and Reduction in Term of Gain or Loss Oxygen/Hydrogen – T/F
1.1.1.2 Oxidation and Reduction in Term of Gain or Loss Oxygen/Hydrogen MCQ
1.1.2 Redox Reaction in Terms of Transfer of Electron
1.1.2.1 Oxidation and Reduction in Term of Gain or Loss Electron MCQ
1.1.3 Redox Reaction in Terms of Change of Oxidation Number
1.1.3.1 Oxidation Number MCQ
1.1.3.2 Change of Oxidation Number MCQ
1.1.3.3 Oxidation and Reduction in Term of Change of Oxidation Number MCQ
1.1.4 Redox Reaction
1.1.4.1 Redox Reaction MCQ
1.1.4.2 Commonly Used Oxidising Agent and Reducing Agent MCQ
1.1.5 Examples of Redox Reaction – Change of Iron(II) Ion to Iron(III) Ion and Vice Versa
1.1.5.1 Inter-conversion of Fe2+ and Fe3+ MCQ
1.1.6 Examples of Redox Reaction – Displacement of Metal
1.1.6.1 Displacement Reactions of Metals MCQ
1.1.7 Examples of Redox Reaction – Displacement of Halogen
1.1.7.1 Displacement Reaction Halogen MCQ
1.1.8 Transfer of Electrons from One Point to Another
1.1.8.1 Transfer of Electrons from One Point to Another MCQ
9.1 Oxidation and Reduction
1.2 Standard electrode potential
2 Topics | 1 Quiz
1.2.1 Standard Electrode Potential
1.2.1.1 The Electrochemical Series MCQ
9.2 Standard Electrode Potential
1.3 Voltaic cell
4 Topics | 2 Quizzes
1.3.1 Voltaic Cell – Simple Cell
1.3.2 Daniel Cell
1.3.3 Cell with Salt Bridge
9.3 Chemical Cells (Voltaic/Galvanic Cells)
1.3.1 Voltaic Cell 1 MCQ
1.3.2 Voltaic Cell 2 MCQ
1.4 Electrolytic cell
8 Topics | 3 Quizzes
1.4.1 Electrolytic Cell
1.4.2 Electrolysis of Molten Ionic Compound
1.4.3 Electrolysis of Aqueous Solution
1.4.4 Factors Affecting the Selective Discharge – Electrochemical Series
1.4.5 Factors Affecting the Selective Discharge – Concentration
1.4.6 Factors Affecting the Selective Discharge – Types of Electrode
1.4.7 Industrial Applications of Electrolysis
9.4 Electrolytic Cells
1.4.1 Electrolytes MCQ
1.4.2 Electrolysis MCQ
1.4.3 Applications of Electrolysis MCQ
1.5 Extraction of metal from its ore
5 Topics | 1 Quiz
1.5.1 Series of Reactivity of Metals
1.5.2 Position of Carbon in The Series of Reactivity of Metals
1.5.3 Position of Hydrogen in The Series of Reactivity of Metals
1.5.4 Extraction of Metals from Their Ores
9.5 Extraction of Metals from Their Ores
1.5.1 Reactivity Series MCQ
1.6 Rusting
3 Topics | 1 Quiz
1.6.1 Corrosion as a Redox Reaction
1.6.2 Prevention of Rusting
9.6 Corrosion
1.6.1 Rusting MCQ
02 Carbon Compounds
2.1 Types of carbon compounds
3 Topics | 1 Quiz
2.1.1 Carbon Compound
2.1.2 Hydrocarbon
10.1 Types of carbon compounds
2.1.1 Carbon Compounds
2.2 Homologous series
11 Topics | 3 Quizzes
2.2.1 Homologous Series
2.2.2 Alkane
2.2.3 Physical Properties of Alkanes
2.2.4 Alkene
2.2.5 Physical Properties of Alkenes
2.2.6 Alcohol
2.2.7 Physical Properties of Alkohols
2.2.8 Carboxylic Acid
2.2.9 Physical Properties of Carboxylic Acids
2.2.10 Ester
10.2 Homologous Series
2.2.1 Alkanes
2.2.2 Alkenes
2.2.3 Alcohols
2.3 Chemical properties and interconversion of compounds between homologous series
11 Topics | 4 Quizzes
2.3.1 Chemical Properties of Alkanes
2.3.2 Preparing Alkene
2.3.3 Chemical Properties of Alkenes
2.3.4 Polymerisation of Alkenes
2.3.5 Differences Between Alkane and Alkene
2.3.6 Preparing Alkohol
2.3.7 Chemical Properties of Alkohol
2.3.8 Uses of Alcohols
2.3.9 Preparing Carboxylic Acids
2.3.10 Chemical Properties of Carboxylic Acids
10.3 Chemical Properties and Interchangeability Between Homologous Series
2.3.1 Reactions of Alkenes 1
2.3.2 Reactions of Alkenes 2
2.3.3 Reactions of Alcohols
2.3.4 Carboxylic Acids
2.4 Isomers and naming based on IUPAC nomenclature
4 Topics | 1 Quiz
2.4.1 Isomerism
2.4.2 Isomerism of Alkenes
2.4.3 Isomers of Alcohol
10.4 Isomers and Naming According to IUPAC Nomenclature
2.4.1 Isomers
03 Thermochemistry
3.1 Heat change in reactions
6 Topics | 1 Quiz
3.1.1 Energy Changes in Chemical Reaction
3.1.2 Exothermic Reactions
3.1.3 Endothermic Reactions
3.1.4 Energy Level Diagram
3.1.5 Energy Changes and Formations of Chemical Bonds
11.1 Heat Changes in Reactions
3.1.1 Change of Energy in Chemical Reaction
3.2 Heat of reaction
8 Topics | 4 Quizzes
3.2.1 Heat of Reaction
3.2.2 Calculating Heat Change
3.2.3 Finding Heat of Reaction
3.2.4 Heat of Precipitation
3.2.5 Heat of Displacement
3.2.6 Heat of Neutralization
3.2 Mole Concept
11.2 Heat of Reaction
3.2.1 Heat of Reaction
3.2.2 Heat of Precipitation
3.2.3 Heat of Displacement
3.2.4 Heat of Neutralisation
3.3 Application of exothermic and endothermic reactions in daily life
1 Topic
11.3 Applications of Endothermic and Exothermic Reactions in Daily Life
04 Polymers
4.1 Polymer
6 Topics | 1 Quiz
4.1.1 Polymer
4.1.2 Polymerisation
4.1.3 Plastics
4.1.4 Synthetic Fibre
4.1.5 Issues in Using Synthetic Polymers
12.1 Polymers
4.1.1 Synthetic Polymers
4.2 Natural rubber
2 Topics
4.2.1 Natural Rubber
12.2 Natural Rubber
4.3 Synthetic rubber
2 Topics
4.3.1 Synthetic Rubber
12.3 Synthetic Rubber
05 Consumer and Industrial Chemistry
5.1 Oils and fats
2 Topics
5.1.1 Fats and Oils
13.1 Oils and Fats
5.2 Cleaning agents
7 Topics | 2 Quizzes
5.2.1 Soap
5.2.2 Cleaning Effect of Soaps
5.2.4 Detergent
5.2.5 The Making of Detergent
5.2.6 Effectiveness of Detergent
5.2.7 Additive in Detergent
13.2 Cleaning Agents
5.2.1 Soap
5.2.2 Detergent
5.3 Food additives
6 Topics | 1 Quiz
5.3.1 Food Additive
5.3.2 Preservative
5.3.3 Colorants/Dyes
5.3.4 Stabilizer
5.3.5 Flavouring Agent and Sweeteners
13.3 Food Additives
5.3.1 Food Additive
5.4 Medicines and cosmetics
1 Topic | 2 Quizzes
13.4 Medicines and Cosmetics
5.4.1 Medicine 1
5.4.2 Medicine 2
5.5 Application of nanotechnology in industry
2 Topics
5.5.1 Application of nanotechnology in industry
13.5 Nanotechnology
5.6 Application of Green Technology in industrial waste management
2 Topics
5.6.1 Application of Green Technology in industrial waste management
13.6 Green Technology
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2.3.2 Preparing Alkene

SPM Form 5 Chemistry 2.3 Chemical properties and interconversion of compounds between homologous series 2.3.2 Preparing Alkene

Preparing Alkene

Alkene can be prepared by

  1. dehydration of alcohol
  2. craking of alkane

Dehydration of Alcohol

When alcohol is heated, it will decompose to form alkene and water. For example, heating ethanol will produce ethene, heating propanol will produce propene, and so on. This process is called dehydration of alcohol.

Dehydration of Ethanol 

C2H5OH → C2H4 + H2O

     

Dehydration of Propanol

C3H7OH → C3H6 + H2O

    Dehydration of Alcohols Using Aluminium Oxide as Catalyst

    Catalyst:
    Aluminium oxide/ Porcelain chips

    Dehydration of alcohols using an acid catalyst

    Catalyst:
    Sulphuric acid or Phosphoric acid

    Temperature: 170°C

    Cracking of Alkane

    1. Cracking is the name given to breaking up large hydrocarbon molecules into smaller and more useful bits.
    2. This is achieved by using high pressures and temperatures without a catalyst, or lower temperatures and pressures in the presence of a catalyst.

    Example: Cracking of butane

    Cracking of butane produces a mixture of methane, ethane, ethene and propene.

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