F324 Analysis Revision

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Can you name the F324 Module 3 Revision?

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What is chromatography?
What state may a mobile phase be?
In Thin-Layer Chromatography what may the stationary phase be?
In Gas Chromatography what may the stationary phase be?
A solid stationary phase separates by....
A liquid stationary phase separates by....
The Rf value can also be called the...
The mobile phase in Gas Chromatography is an....
The sample to be analysed is injected into the stream of....
This carries it through the tube and over the....
The components of the mixture constantly...........in the stationary phase, ..........into the mobile phase and......... as they travel through the tube.
The........of each compound determines how long it spends dissovled in the stationary phase.
A substance with a high............will spend more time dissolved, so will take long to travel through the tube to the...............
The time taken to reach the detector is called the.........
This can be used to......
A graph of the reactor response by the time taken to reach the reactor is called a.......
This shows a series of........, the area under which can be used to determine the relative...........of the substances in the mobile phase.
The retention times can be looked up in a reference table to............
What is a limitation of gas chromatography?
What other technique can gas chromatography be coupled with to identify substances more reliably?
A............is produced when a sample of a gaseous compound is analysed in a............
A sample is bombarded with..........., causing other electrons to break off from the molecules.
Question
To find the relative molecular mass of a compound you can look at the..............
Bombarding the compound with electrons causes some of the molecules to break into........
The molecular mass of the compound is usually the one with the second highest..........
Using the fragmentation patterns with, what can sometimes be determined?
Only.........show up on the mass spectrum.
In Gas chromatography-mass spectrometry (GC-MS) the sample is..............but instead of going to a detector the components are fed into............
What does HPLC stand for?
The stationary phase in HPLC is a solid that is packed into a............
The mobile phase and the mixture is pushed through the column.........
In forensics, GC-MS can be used to............
How do fire investigators use the method to detect whether the fire was started deliberately?
How does airport security use GC-MS?
How is the process made quicker?
What are GC-MS machines on space probes used to examine?
What does NMR stand for?
A sample of a compound is placed in a........ and exposed to a range of different frequencies of.........
The..........of certain atoms within the molecule...........from the radio waves.
The amount of energy that a nucleus absorbs at each frequency will depend on the.................that it's in.
The..........of these absorptions gives you information about the positions of certain atoms within the molecule.
The number of........can also be determined from NMR spectroscopy.
Carbon-13 NMR gives you information about the.........
High Resolution Proton NMR give you information about the..............
Question
A nucleus is partly shielded from the effects of external magnetic fields by its..............
Any other atoms or groups of atoms around a nucleus will also affect its amount of...........
This means that nuclei feel different...................depending on their environments.
What is the standard substance?
Why does this substance produce a single absorption peak in both types of NMR?
Why is it chosen as a standard?
What greek symbol is the difference in radio frequency represented by?
The number of peaks on a Carbon-13 NMR spectrum represents.........
The ratio of the areas underneath the various peaks represents......
Proton NMR spectrum give information about....
The main difference between Carbon-13 and proton NMR spectra is that the peaks in proton NMR spectrum...
What is the effect caused by the influence of hydrogen atoms that are bonded to neighbouring carbon atoms called?
If a peak is split into a doublet, how many hydrogens are on the neighbouring carbon atom?
What rule is used in the previous question?
What type of solvent is used in Proton NMR Spectroscopy?
Why are normal solvents such as water or ethanol not used?
What compund to chemists use to identify OH and NH protons?
What type of molecules does Infrared Spectroscopy let you identify?
What absorbs the IR radiation?
Different bonds absorb different...............of radiation.

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Created Dec 30, 2010ReportNominate
Tags:module, revision