C3.2 Ionic Bonding: Flashcards
(7 cards)
What is ionic bonding?
The transfer of electrons from a metal to a non-metal
creating positive and negative ions that attract each other.
Which atoms lose electrons in ionic bonding?
Metals lose electrons to become positively charged ions (cations).
Which atoms gain electrons in ionic bonding?
Non-metals gain electrons to become negatively charged ions (anions).
What holds the ions together in an ionic compound?
strong electrostatic forces of attraction between oppositely charged ions.
Why do ionic compounds have high melting and boiling points?
Because of the strong forces holding the ions together, a lot of energy is needed to break them.
Can ionic compounds conduct electricity? If yes, when?
Yes, but only when melted or dissolved in water because the ions are free to move.
Give an example of an ionic compound.
Sodium chloride (NaCl).