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 復(fù)習(xí)筆記 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 復(fù)習(xí)筆記 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 復(fù)習(xí)筆記 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 復(fù)習(xí)筆記 4.1.3 Classifying Organic Reactions Classifying Organic Reactions The reactions of organic compounds can be classified into?substitution,?addition?and?combus...
Edexcel IGCSE Chemistry 復(fù)習(xí)筆記 4.1.2 Naming Organic Compounds Naming Organic Compounds Names of compounds The names of organic compounds have two parts: the prefix or stem and the end part...
Many real-life situations can be modelled using sequences and series, including but not limited to: patterns made when tiling floors; seating people around a table; the rate of change of a populati...
Edexcel IGCSE Chemistry 復(fù)習(xí)筆記 4.1.1 Organic Compounds Representing Organic Compounds Introduction Organic Chemistry is the scientific study of the structure, properties, and reactions of ...
Geometric Sequences What is a geometric sequence? In a?geometric sequence, there is a?common ratio,?r,?between consecutive terms in the sequence For example, 2, 6, 18, 54, 162, … is a sequence with...
