Definitions module 1

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Atomic number
The number of protons in the nucleus of an atom of an element
1 of 7
Mass number
The number of protons and neutrons in the nucleus of an atom of an element
2 of 7
Relative atomic mass
The average mass of one element relative to 1/12th the mass of an atom of C-12
3 of 7
Relative molecular mass
The average mass of one molecule of a substance relative to 1/12th the mass of an atom of C-12
4 of 7
Isotope
Atoms of the same element with the same number of protons but different numbers of neutrons
5 of 7
Relative isotopic mass
The mass of an isotope relative to 1/12th the mass of an atom of C-12
6 of 7
1st ionisation energy
The energy required to remove an electron from one mole of gaseous atoms to form gaseous ions with a +1 charge
7 of 7

Other cards in this set

Card 2

Front

The number of protons and neutrons in the nucleus of an atom of an element

Back

Mass number

Card 3

Front

The average mass of one element relative to 1/12th the mass of an atom of C-12

Back

Preview of the back of card 3

Card 4

Front

The average mass of one molecule of a substance relative to 1/12th the mass of an atom of C-12

Back

Preview of the back of card 4

Card 5

Front

Atoms of the same element with the same number of protons but different numbers of neutrons

Back

Preview of the back of card 5
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