Ionic Bonding, Compounds and Formulae

Question 1

What 2 things does ionic bonding happen between?

Answer 1

A metal and a non-metal

Question 2

What are transferred from a metal to a non-metal during ionic bonding?

Answer 2

Electron(s)

Question 3

What are positive ions called?

Answer 3

Cations

Question 4

What are negative ions called?

Answer 4

Anions

Question 5

What overall charge do ionic compounds have?

Answer 5

Neutral overall charge

Question 6

What is the ratio of ions called?

Answer 6

The empirical formula

Question 7

What are two advantages of dot and cross diagrams?

Answer 7

Easy to understand and shows electronic structure of the ions

Question 8

What are two disadvantages of dot and cross diagrams?

Answer 8

Not 3D and don’t show giant lattice structure

Question 9

What is an advantages of 2D space filling diagrams?

Answer 9

Shows charges of ions

Question 10

What is a disadvantage of 2D space filling diagrams?

Answer 10

Doesn’t show 3D measurements

Question 11

What is an advantage of 3D space filling diagrams?

Answer 11

Shows most particles as it is a 3D model

Question 12

What is a disadvantage of 3D space filling diagrams?

Answer 12

Doesn’t show electrons

Question 13

What is an advantage of ball and stick diagrams?

Answer 13

Shows all particles clearly

Question 14

What is a disadvantage of stick and ball diagrams?

Answer 14

Doesn’t show which charges are which

Question 15

Do ionic compounds have high or low melting points? Why?

Answer 15

High because they are held together by strong electrostatic forces of attraction so lots of energy is needed to break them

Question 16

Can ionic compounds conduct when solid? Why/ why not?

Answer 16

No because even though there is positive charge, th charged particles cannot move freely so cannot conduct energy

Question 17

Can ionic compounds conduct when dissolved in solution? Why/ why not?

Answer 17

Yes because they have charged particles and the ions can move freely meaning the ions can carry charge so can conduct energy

Question 18

Why can ionic compounds dissolve in water?

Answer 18

The ions separate when attracted to H+ and O-

Question 19

Write the ions and formulae for sodium chloride

Answer 19

Na(+) and Cl(-) = NaCl

Question 20

Write the ions and formulae for calcium oxide

Answer 20

Ca(2+) and O(2-) = CaO

Question 21

Write the ions and formulae for beryllium bromide

Answer 21

Be(2+) and Br(-) = BeBr(2)

Question 22

Write the ions and formulae for magnesium carbonate

Answer 22

Mg(2+) and CO(3)(2-) = MgCO(3)