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Test on Mass Spectrometer
1. Who invented mass Spectrometer? [1]
2. What element was he working on? [1]
3. Define isotopes. [3]
4. On what principal does it work? [4]
5. List main parts [7]
6. How are ions formed? [6]
7. What factors are important in separating ions? [2]
8. What must happen to the sample before it is introduced? [1]
9. Draw a mass Spectrum and label the axes. [4]
10. Label the diagram [15]
Test on Mass Spectrometer with answers
1. Who invented mass Spectrometer? [1] Aston
2. What element was he working on? [1] Ne
3. Define isotopes. [3] Same atomic number / different mass number / due to different umbers of neutrons
4. On what principal does it work? [4] +ve ions / separated by mass / when moving / in magnetic field
5. List main parts [7] inlet / ionisation chamber / accelerator / separator (analyser) / detector / amplifier/ display
6. How are ions formed? [6] high energy electron / hits atom / knocks off electron / forms +ve ion / X + e- = X+ + 2 e- (2)
7. What factors are important in separating ions? [4] mass of the ions / heavier bent least / strength of magnetic field / stronger field bends more
8. What must happen to the sample before it is introduced? [1] vaporised
9. Draw a mass Spectrum and label the axes. [5] Abundance on y axis / mass on x axis / 2 bars of different heights
10. Label the diagram of mass spectrometer [15]
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