Composite Functions What is a composite function? How do I find the domain and range of a composite function? Exam Tip Worked Example Inverse Functions What is an inverse function? What are ...
Edexcel IGCSE Chemistry 复习笔记 4.6.2 Reactions of Carboxylic Acids Reactions of Carboxylic Acids The carboxylic acids behave like other acids They react with metals to form a salt and hydr...
Edexcel IGCSE Chemistry 复习笔记 4.6.1 Carboxylic Acids The Carboxylic Acids Carboxylic acids is the name given to compounds containing the functional group carboxyl, -COOH The general formu...
Edexcel IGCSE Chemistry 复习笔记 4.5.3 Manufacture of Ethanol Industrial Synthesis of Ethanol Ethanol can be synthesised by the hydration of ethene Ethene is a by-product of the cracking of ...
Edexcel IGCSE Chemistry 复习笔记 4.5.2 Oxidation of Ethanol Oxidation of Ethanol Ethanol can undergo oxidation in three different ways: Combustion Aerobic oxidation Treatment with an oxidisi...
Edexcel IGCSE Chemistry 复习笔记 4.5.1 Alcohols The Alcohols Alcohols are colourless liquids that dissolve in water to form neutral solutions The first four alcohols are commonly used as fue...
Edexcel IGCSE Chemistry 复习笔记 4.4.2 Bromine & Alkenes Bromine & Alkenes Alkenes are a homologous series of hydrocarbon compounds with at least one double bond between two of the c...
Edexcel IGCSE Chemistry 复习笔记 4.4.1 Alkenes The Alkenes All alkenes contain a double carbon bond, which is shown as two lines between two of the carbon atoms i.e. C=C All alkenes contain ...
Language of Functions What is a mapping? A mapping transforms one set of values (inputs) into another set of values (outputs) Mappings can be: One-to-one Each input gets mapped to exactly one uniqu...
