bonding Flashcards
what are the 3 main types of bonding?
covalent, ionic and metallic
what types of atom is ionic bonding between?
metal and non metal
what is ionic bonding?
the electrostatic force of attraction between oppositely charge ions
what structure do ionically bonded compounds form?
giant ionic lattice
what is an anion?
a negative ion
what is a cation?
a positive ion
what two factors affect the strength of ionic bonds?
size of the ions
charge of the ions
how does the size of an ion affect the strength of the ionic bond?
the smaller the ion, the stronger the attraction
how does the charge of ions affect the strength of the ionic bond?
the greater the charge difference, the stronger the ionic bond
what are the properties of ionic compounds?
conduct electricity
high melting point
suluble
why do ionic compounds conduct?
if MOLTEN OR DISSOLVED the ions are free to move and carry charge
why do ionic compounds have a high melting point?
strong electrostatic forces of attraction need a lot of energy to overcome
why are ionic compounds usually soluble in water?
water molecules pull ions away from the lattice causing it to dissolve
what type of atoms is covalent bonding between?
non metal + non metal
what is covalent bonding?
a shared pair of electrons