Structural models

Question 1

What relates to ionic charges

Answer 1

group number

Question 2

Group 1 = what ionic charge

Answer 2

1+

Question 3

Group 2 = what ionic charge

Answer 3

2+

Question 4

Group 6 = what ionic charge

Answer 4

2-

Question 5

Group 7 = what ionic charge

Answer 5

1-

Question 6

How to calculate formula using ionic charges (Ca²⁺ and Cl⁻)

Answer 6

cancel out the charges (Ca²⁺ = 2, Cl⁻ + Cl⁻ = -2 - formula = CaCl₂)

Question 7

How to calculate formula using ionic model (Ca and Cl)

Answer 7

count the ions (Ca = 9, Cl = 18), put it into a ratio and simplify (9:18 - 1:2 = CaCl₂)

Question 8

Model - dot and cross advantages

Answer 8

show how the electrons are involved in bonding, ion charges

Question 9

Model - dot and cross disadvantages

Answer 9

don’t show the relative size of atoms or how the atoms are arranged

Question 10

Model - displayed formula advantages

Answer 10

show atoms and how bonds are arranges, simplest model

Question 11

Model - displayed formula disadvantages

Answer 11

don’t show how the electrons are involved

Question 12

Model - ball and stick advantages

Answer 12

show the shape of the structure in 3D

Question 13

Model - ball and stick disadvantages

Answer 13

don’t show the correct scale, misleading as it looks like there are gaps

Question 14

Model - close packed advantages

Answer 14

show ion arrangement

Question 15

Model - displayed formula disadvantages

Answer 15

don’t show all the ions