ionic bonding, ionic compunds

Question 1

what are ions

Answer 1

charged particles

Question 2

what can ions either be

Answer 2

single atoms or groups of atoms

Question 3

what are anions and how do they form

Answer 3

they are negative ions and they form when atoms gain electrons

Question 4

what are cations and how do they form

Answer 4

they are postative ions and form when atoms loose electrons

Question 5

how do you work out the charge on an ion

Answer 5

the number of electrons lost or gained

Question 6

if elements are in the same group whats the same

Answer 6

the number of electrons in the outer shell

Question 7

how does an ionic bond happen

Answer 7

when a metal and a non metel react the metal looses electrons (negative) to form a posative ion (cation) and the non metal gains these electrons to form a negatice ion (anion). These oppositely charged ions are attracted to each other by strong electrostatic attractions.

Question 8

what is the overall charge of any ionic compound

Answer 8

0

Question 9

how do you work out the formulae of ionic compounds

Answer 9

write out both the ions after you have worked out the charges then you get the negative charges to balence the posative ones

Question 10

what structure do ionic compounds have

Answer 10

giant lattice

Question 11

why do ionic compounds have high melting points

Answer 11

the electrostatic attraction between oppositely ions is very strong so alot of energy is needed to break these attractions

Question 12

are ionic compounds conductors

Answer 12

not when they are solid but if you melt them or dissolve them in water they can conduct electricity