Chemistry Definitions

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Mass Number
Total number of protons and neurons in an atoms nucleus
1 of 11
Atomic Number
Total number of protons in an atoms nucleus
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Isotope
Atoms of the same element with a different number of neutrons
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Relative Atomic Mass
Average mass of an atom relative to 1/12 the mass of one carbon-12 atom
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Relative Molecular Mass
Average mass of of a molecule relative to 1/12 the mass of one carbon-12 atom
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Relative Isotopic Mass
The mass of an isotope of an element relative to 1/12 the mass of one carbon-12 atom
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Relative Formula Mass
Average mass of a formula relative to 1/12 the mass of one carbon-12 atom
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First Ionisation Energy
The enrgy required to remove one electron from one mole of gaseous atoms
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Mole
The unit of amount of substance, roughly 6x10(23) particle
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Avagadro's Constant
Number of particles in a mole
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Molar Mass
Mass of the substance that contains one mole of that substance (g)
11 of 11

Other cards in this set

Card 2

Front

Total number of protons in an atoms nucleus

Back

Atomic Number

Card 3

Front

Atoms of the same element with a different number of neutrons

Back

Preview of the back of card 3

Card 4

Front

Average mass of an atom relative to 1/12 the mass of one carbon-12 atom

Back

Preview of the back of card 4

Card 5

Front

Average mass of of a molecule relative to 1/12 the mass of one carbon-12 atom

Back

Preview of the back of card 5
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