CIE A Level Chemistry復習筆記4.1.6 M + 2 Peak
Detecting Bromine & Chlorine Atoms Using M+2 Peak The presence of bromine or chlorine atoms in a compound gives rise to a?[M+2]?and possibly?[M+4]?peak Chlorine Chlorine exists as two isotopes,...
CIE A Level Chemistry復習筆記4.1.5 M + 1 Peak
Determine Number of Carbon Atoms Using M+1 Peak The?[M+1]?peak is caused by the presence of the carbon-13 (13C) isotope in the molecule Carbon-13 makes up approximately 1.1% of all carbon atoms The...
CIE A Level Chemistry復習筆記4.1.4 Molecular Ion Peak & Fragmentation
Mass Spectrometry: Deducing Molecular Formula Each?peak?in the mass spectrum corresponds to a certain?fragment?with a particular?m/e?value The peak with the highest?m/e?value is the molecular ion (...
CIE A Level Chemistry復習筆記4.1.3 Isotopic Abundance & Relative Atomic Mass
Calculating Relative Atomic Mass Isotopes?are different atoms of the?same?element?that contain the same number of?protons?and electrons but a different number of?neutrons. These are atoms of the sa...
CIE A Level Chemistry復習筆記4.1.2 Mass Spectrometry
Interpreting Mass Spectra Mass spectroscopy?is an analytical technique used to identify unknown compounds The molecules in the small sample are?bombarded?with high energy electrons which can cause ...
CIE A Level Chemistry復習筆記4.1.1 Infra-Red Spectroscopy
Interpreting IR Spectra Infrared (IR) spectroscopy?is a technique used to identify compounds based on changes in?vibrations?of atoms when they?absorb?IR of certain?frequencies A?spectrophotometer?i...
CIE A Level Chemistry復習筆記3.9.3 Synthetic Routes
Analysis of Synthetic Routes Students should be able to critically analyse given synthetic routes and determine whether appropriate reagents and reaction conditions are used Students should also be...
CIE A Level Chemistry復習筆記3.9.2 Multi-Step Synthesis
Multi-step Synthetic Routes Many organic molecules are made in multi-step synthetic routes Students should be able to recall the different reactions each functional group undergoes and apply this k...
CIE A Level Chemistry復習筆記3.9.1 Organic Synthesis
Elucidating Organic Molecules You are expected to be able to identify organic functional groups, their properties, how to test for their presence and how they are made Functional groups The table b...
