Chemistry

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  • Created by: Samiya72
  • Created on: 22-02-15 23:29
Mass Number
Total number of protons and neutrons in the nucleus
1 of 12
Atomic Number
Number of protons in the element
2 of 12
Isotopes
Same proton number but different number of neutrons
3 of 12
Relative Atomic Mass
Average mass of an atom of an element on a scale where an atom of carbon is 12
4 of 12
Relative Isotopic Mass
Average mass of an atom of an isotope of an element on a scale where an atom of carbon is 12
5 of 12
Relative Molecular Mass
Average mass of a molecule on a scale where carbon-12 is 12
6 of 12
Vaporisation
Sample is turned into gas using electrical heater
7 of 12
Ionisation
Gas particles are bombarded with high energy electrons to ionise them. Electrons are knocked out of the particles, leaving positive ions
8 of 12
Acceleration
The positive ions are accelerated by magnetic field
9 of 12
Deflection
Positive ions are altered by the magnetic field. Lighter ions have less momentum and are deflected more than heavier ions.
10 of 12
Detection
Magnetic field is slowly increased and different ions reach the detector and different times and a mass spectrum is produced.
11 of 12
First ionisation energy
The energy needed to remove one electron from each atom in one mole of gaseous atoms to make one mole of gaseous 1+ ions
12 of 12

Other cards in this set

Card 2

Front

Number of protons in the element

Back

Atomic Number

Card 3

Front

Same proton number but different number of neutrons

Back

Preview of the back of card 3

Card 4

Front

Average mass of an atom of an element on a scale where an atom of carbon is 12

Back

Preview of the back of card 4

Card 5

Front

Average mass of an atom of an isotope of an element on a scale where an atom of carbon is 12

Back

Preview of the back of card 5
View more cards

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