Bonding (2)

Question 1

What are negative ions called?

Answer 1

Anions

Question 2

What is the key point to remember about the number of electrons gained or lost by an atom and its charge?

Answer 2

Number of electrons gained/lost = Charge

Question 3

What is the first step in the formation of sodium chloride?

Answer 3

Sodium losing its one outer electron

Question 4

What charge is formed when magnesium loses two outer electrons?

Answer 4

2+

Question 5

What is incorrect to write the other way around?

Answer 5

The number and sign

Question 6

What are positive ions called?

Answer 6

Cations

Question 7

What is the definition of an ionic bond?

Answer 7

Oppositely charged ions held by electrostatic forces

Question 8

What is the second step in the formation of sodium chloride?

Answer 8

Chlorine gaining an electron

Question 9

What charge is formed when oxygen gains two electrons?

Answer 9

2-

Question 10

What do chlorine atoms become?

Answer 10

Chloride ions

Question 11

What types of elements form an ionic bond?

Answer 11

Metal and non-metal

Question 12

What do oxygen atoms become?

Answer 12

Oxide ions

Question 13

How many electrons can the third shell hold?

Answer 13

8

Question 14

What is the charge of a sodium ion formed in the process?

Answer 14

1

Question 15

What type of force holds the ions together in an ionic compound?

Answer 15

electrostatic forces

Question 16

What do bromine atoms become?

Answer 16

Bromide ions

Question 17

Why do atoms lose or gain electrons?

Answer 17

To obtain a full outer shell of electrons

Question 18

How can ionic bonds be represented diagrammatically?

Answer 18

Using dot and cross diagrams

Question 19

What is the charge of a chloride ion formed in the process?

Answer 19

1-

Question 20

What is the advantage of dot and cross diagrams in illustrating bonding?

Answer 20

Useful for illustrating the transfer of electrons

Question 21

What kind of ions do metals form?

Answer 21

Positively charged ions

Question 22

What should solid dots and crosses represent in an ionic bond diagram?

Answer 22

Electrons from each atom

Question 23

How are sodium and chloride ions held together in the compound?

Answer 23

Strong electrostatic forces

Question 24

How are ions described in notation?

Answer 24

1-, 2+

Question 25

What kind of ions do non-metals form?

Answer 25

Negatively charged ions

Question 26

How should the charge be shown in an ionic bond diagram?

Answer 26

In superscript on the right-hand side

Question 27

What does writing the number and sign the other way around refer to?

Answer 27

The oxidation state

Question 28

What is the purpose of large square brackets in an ionic bond diagram?

Answer 28

Encapsulate each atom

Question 29

What happens with the electron configuration after potassium and calcium?

Answer 29

Complex pattern

Question 30

What is the formula of magnesium oxide?

Answer 30

MgO

Question 31

What are the disadvantages of the Ball and Stick Model?

Answer 31

No 3D atom arrangement or electron movement shown, ions placed far apart

Question 32

What is an ion?

Answer 32

Electrically charged atom or group of atoms

Question 33

In larger atoms, which electron shell needs to be drawn in an ionic bond diagram?

Answer 33

Valence shell (outer shell)

Question 34

What are the advantages of the Ball and Stick Model?

Answer 34

Illustrates 3D arrangement of atoms, shape of ionic compound