Bonding

Question 1

What is an ionic bond?

Answer 1

An electrostatic force holding oppositely charged atoms together, between at least one metal and non metal (unless involving hydrogen)

Question 2

What is transferred in an ionic bond?

Answer 2

Electrons

Question 3

What is the result of an ionic bond in terms of electrons?

Answer 3

Atoms having full outer shells of electrons

Question 4

Do ions have high or low melting and boiling points? Why?

Answer 4

High melting points because they have strong electrostatic bonds that require lots of energy to break

Question 5

What are intermolecular forces?

Answer 5

The forces holding separate atoms, compounds or molecules together

Question 6

What are intramolecular forces?

Answer 6

The forces holding atoms that make up a molecule or compound together

Question 7

What are ionic, covalent and metallic bonds examples of?

Answer 7

Intermolecular bonds

Question 8

When can ions conduct electricity? Why?

Answer 8

Ions only conduct electricity when they are not solid, since the ions can move more.

Question 9

Are ionic compounds soluble in water?

Answer 9

Yes

Question 10

What is a covalent bond?

Answer 10

The electrostatic force between a positive nucleus and a bonding pair of electrons

Question 11

What is the valence shell?

Answer 11

The outer shell

Question 12

What happens to electrons in a covalent bond?

Answer 12

They are shared between atoms to form full outer shells

Question 13

Do simple covalent compounds have high or low melting and boiling points? Why?

Answer 13

Low melting points because they have weak intermolecular forces that require little energy to break

Question 14

Do covalent compounds dissolve in water?

Answer 14

No

Question 15

What is diamond made from?

Answer 15

Carbon

Question 16

What is graphite made from?

Answer 16

Carbon

Question 17

What is buckminsterfullerene made from?

Answer 17

Carbon

Question 18

Do diamonds conduct electricity? Why?

Answer 18

No since it has no delocalised electrons

Question 19

Does graphite conduct electricity? Why?

Answer 19

Yes, since it has delocalised (free) electrons

Question 20

Does buckminsterfullerene conduct electricity? Why?

Answer 20

Yes, since it has delocalised (free) electrons

Question 21

Do diamonds have high or low melting and boiling points? Why?

Answer 21

High, since it has strong covalent bonds which require lots of energy to break

Question 22

Describe the structure of a diamond

Answer 22

Tetrahedral structure

Question 23

How is graphite arranged?

Answer 23

In layers

Question 24

How many other atoms does each atom bond to in graphite?

Answer 24

3

Question 25

How many other atoms does each atom bond to in diamonds?

Answer 25

4

Question 26

Does graphite have high or low melting and boiling points? Why?

Answer 26

High, since it has strong covalent bonds which require lots of energy to break

Question 27

Does buckminsterfullerene have high or low melting and boiling points? Why?

Answer 27

Low, since it has weak covalent bonds which require little energy to break compared to other giant covalent structures, but high compared to other compounds

Question 28

Are diamonds hard or soft?

Answer 28

Very hard

Question 29

Is graphite hard of soft?

Answer 29

Soft

Question 30

Is buckminsterfullerene hard or soft?

Answer 30

Very hard

Question 31

Diamond, graphite and buckminsterfullerene are examples of…

Answer 31

Giant covalent compounds

Question 32

Name some properties of metals

Answer 32

- Sonorous - Shiny - Dense - Good conductors of heat and electricity - Malleable - Hard

Question 33

What is a metallic bond?

Answer 33

The electrostatic force between positive metal ions and their delocalised electrons

Question 34

In metallic bonding, how are metal ions arranged?

Answer 34

In layers that can slide over each other

Question 35

Which of these metal chlorides are insoluble in water? A) copper chloride B) lead chloride C) magnesium chloride D) potassium chloride

Answer 35

B) lead chloride

Question 36

Do metallic compounds have high or low melting and boiling points? Why?

Answer 36

High melting points because they have strong electrostatic bonds that require lots of energy to break

Question 37

What is the total number of atoms in Al(NO3)3

Answer 37

13

Question 38

Do simple covalent compounds conduct electricity? Why?

Answer 38

No, because they have nothing to carry an electrical charge

Question 39

Name 3 giant covalent compounds

Answer 39

- Diamond - Graphite - Buckminsterfullerine

Question 40

What are diamonds, graphite and buckminsterfullerene examples of?

Answer 40

Giant covalent compounds

Question 41

What ions do group 1 elements form?

Answer 41

+1

Question 42

What ions do group 2 elements form?

Answer 42

+2

Question 43

What ions do group 0 elements form?

Answer 43

They do not form ions

Question 44

What ions do group 7 elements form?

Answer 44

-1

Question 45

What ions do group 6 elements form?

Answer 45

-2

Question 46

Name the 7 diatomic elements

Answer 46

- **H**ydrogen - **O**xygen - **N**itrogen - **F**luorine - **Br**omine - **I**odine - **C**h**l**orine

Question 47

How are electrons arranged in a metallic bond?

Answer 47

A sea of electrons surrounding the positive metal ions

Question 48

Do metallic compounds conduct electricity? Why?

Answer 48

Yes, since it has delocalised electrons

Question 49

Are covalent compounds soluble in water?

Answer 49

No

Question 50

Are metallic compounds soluble in water?

Answer 50

No

Question 51

What structure to all ionic compounds form?

Answer 51

A giant ionic lattice

Question 52

What structure do all metallic compounds form?

Answer 52

Giant metallic lattices