Edexcel IGCSE Chemistry 复习笔记 4.3.2 Halogens & Alkanes
Edexcel IGCSE Chemistry 复习笔记 4.3.2 Halogens & Alkanes Halogens & Alkanes In a substitution reaction, one atom is swapped with another atom Alkanes undergo a substitution reaction...
IB DP Maths: AA SL复习笔记1.4.1 Proof
Language of Proof What is proof? Proof is a series of logical steps which show a result is true for all specified numbers ‘Seeing’ that a result works for a few numbers is not enough to show that ...
Edexcel IGCSE Chemistry 复习笔记 4.3.1 Alkanes
Edexcel IGCSE Chemistry 复习笔记 4.3.1 Alkanes The Alkanes Alkanes are a group of saturated hydrocarbons The term saturated means that they only have single carbon-carbon bonds, there are no...
Edexcel IGCSE Chemistry 复习笔记 4.2.4 Cracking
Edexcel IGCSE Chemistry 复习笔记 4.2.4 Cracking Cracking Saturated molecules contain single bonds only whereas unsaturated molecules contain double bonds between their carbon atoms Alkanes a...
IB DP Maths: AA SL复习笔记1.3.5 Compound Interest & Depreciation
Compound Interest What is compound interest? Interest is a small percentage paid by a bank or company that is added on to an initial investment Interest can also refer to an amount paid on a loan o...
Edexcel IGCSE Chemistry 复习笔记 4.2.3 Nitrogen Oxides & Sulfur Dioxide
Edexcel IGCSE Chemistry 复习笔记 4.2.3 Nitrogen Oxides & Sulfur Dioxide Formation of Nitrogen Oxides Nitrogen Oxides These compounds (NO and NO2) are formed when nitrogen and oxygen reac...
Edexcel IGCSE Chemistry 复习笔记 4.2.2 Combustion
Edexcel IGCSE Chemistry 复习笔记 4.2.2 Combustion Fuels & Combustion The combustion of fossil fuels is the major source of atmospheric pollution Fossil fuels include: coal, oil, natural ...
Edexcel IGCSE Chemistry 复习笔记 4.2.1 Crude Oil & Fractional Distillation
Edexcel IGCSE Chemistry 复习笔记 4.2.1 Crude Oil & Fractional Distillation Crude Oil & Fractional Distillation Crude oil as a mixture is not a very useful substance but the different...
Edexcel IGCSE Chemistry 复习笔记 4.1.3 Classifying Organic Reactions
Edexcel IGCSE Chemistry 复习笔记 4.1.3 Classifying Organic Reactions Classifying Organic Reactions The reactions of organic compounds can be classified into substitution, addition and combus...
