Chemistry A Level Definitions Flashcards
1
Q
What is the definition of first ionisation energy ?
A
The first ionisation energy is the energy needed to remove 1 electron from each atom in 1 mole of gaseous atoms to form 1 mole of gaseous 1+ ions
2
Q
What is the definition of the second ionisation energy
A
The second ionisation energy is the energy needed to remove 1 electron from each ion in 1 mole of gaseous 1+ ions to form 1 mole of gaseous 2+ ions
3
Q
Bond Enthalpy
A
Standard enthalpy change associated with breaking one mole of bonds in a gaseous substance into individual gaseous atoms