ionic compounds

Question 1

what structure do ionic compounds have?

Answer 1

giant ionic lattice

Question 2

describe a giant ionic lattice structure

Answer 2

thousands of ions form a closely packed regular lattice arrangement and there are strong electrostatic forces of attraction between oppositely charged ions in all directions

Question 3

why do ionic compounds have high melting and boiling points?

Answer 3

there are many strong bonds between the ions and it takes a lot of energy to break the bonds

Question 4

why can’t ionic compounds conduct electricity in a solid state?

Answer 4

the ions are in fixed positions

Question 5

why can ionic compounds conduct electricity in a liquid or aqueous state?

Answer 5

the ions are free to move

Question 6

what state are ionic compounds at room temp?

Answer 6

solid

Question 7

overall charge of ionic compound

Answer 7

neutral

Question 8

how are ionic compounds formed-explain in terms of MgO?

Answer 8

-reaction of metal and non-metal
-electron transfer occurs
-Mg in group 2 so gives 2 electrons to O to form full outer shell
-O in group 6 so receives 2 electrons from Mg to form full outer shell
-Mg becomes Mg²⁺
-O becomes O²⁻

Question 9

how are ionic compounds held together?

Answer 9

by strong electrostatic forces of attraction in all directions between oppositely charged ions

Question 10

draw the dot and cross diagram of sodium chloride (atoms and ions)

Answer 10

answer in textbook pg 49

Question 11

draw the dot and cross diagram of magnesium oxide (atoms and ions)

Answer 11

answer in textbook pg 49

Question 12

draw the dot and cross diagram of magnesium chloride (atoms and ions)

Answer 12

answer in textbook pg 49