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Quiz on Time-of-Flight Mass Spectrometry, created by shmockol on 28/12/2015.

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Time-of-Flight Mass Spectrometry

Question 1 of 6

1

Why are samples ionised?

Select one of the following:

  • To lose a proton

  • To create positive ions

  • So the ions can be accelerated

  • So that all of the atoms can travel at the same speed

Explanation

Question 2 of 6

3

Select from the dropdown lists to complete the text.

Atoms are ionised after they are dissolved in a ( non-polar, polar, positive, neutral ) solvent. They are then pushed through a nozzle at a ( high, low, normal ) speed. Once they are ionised, the sample then consists of ( electrical, negative, positive ) ions.

Explanation

Question 3 of 6

2

What happens during acceleration?

Select one or more of the following:

  • An electric field accelerates positive ions

  • Electricity accelerates negative ions

  • Ions move at a constant speed

  • Ions are given the same kinetic energy

Explanation

Question 4 of 6

1

Ions leave the electric field with a constant speed and a constant kinetic energy.

Select one of the following:

  • True
  • False

Explanation

Question 5 of 6

2

During ion drift, the region that the ions enter has electric field and they drift through this at speed after acceleration.

Drag and drop to complete the text.

    no
    some
    a positive
    a negative
    a lot of
    a higher
    a lower
    the same

Explanation

Question 6 of 6

1

Ions must be charged in order for them to be accelerated.

Select one of the following:

  • True
  • False

Explanation

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