Using structural models

Question 1

How to calculate the formula using ionic charges

Answer 1

Ca2+ Cl-
Cancel out charges
Ca2+ Cl-
Cl-
Formula CaCl2

Question 2

How to calulate the formual using the ionic model

Answer 2

count the amount of ions, put it into a ratio and simplify, those number will be the small numbers of the formula

Question 3

Group 1 ionic charge

Answer 3

1+

Question 4

Group 6 ionic charge

Answer 4

2-

Question 5

Group 7 ionic charge

Answer 5

1-

Question 6

What does the dot and cross diagram show

Answer 6

how the electrons are involved in bonding, ion charges

Question 7

What doesn’t the dot and cross diagram show

Answer 7

the relative size of the atoms, how the atoms are arranged

Question 8

What does the displayed formula diagram show

Answer 8

atoms and how bonds are arranged, simplest model

Question 9

What doesn’t the displayed formula diagram show

Answer 9

how the electrons are involved

Question 10

What does the ball and stick model show

Answer 10

the shape of the structure in 3D

Question 11

What doesn’t the ball and stick formula model show

Answer 11

correct scale, misleading as it looks like there are gaps between the ions

Question 12

What does the close packed model show

Answer 12

ion arrangement

Question 13

What doesn’t the close packed model show

Answer 13

all the ions some are hidden