1.4.10 Effects of Structure & Bonding

Question 1

Different types of structure and bonding have different effects on the

Answer 1

physical properties of substances such as their melting and boiling points, electrical conductivity and solubility

Question 2

Ionic compounds are strong as

Answer 2

the strong electrostatic forces in ionic compounds keep the ions strongly together

Question 3

Ionic compounds are brittle, meaning

Answer 3

ionic crystals can split apart easily

Question 4

onic compounds have high

Answer 4

melting and boiling points

Question 5

Ionic compounds have high melting and boiling points, the

Answer 5

strong electrostatic forces between the ions in the lattice act in all directions and keep them strongly together

Question 6

Melting and boiling points increase with

Answer 6

charge density of the ions

Question 7

Melting and boiling points increase with charge density of the ions due to

Answer 7

the greater electrostatic attraction of charges

Question 8

Ionic compounds are what in water

Answer 8

soluble

Question 9

Ionic compounds are soluble in water as

Answer 9

they can form ion - dipole bonds

Question 10

Ionic compounds only conduct electricity when

Answer 10

molten or in solution

Question 11

Ionic compounds only conduct electricity when molten or in solution, when molten or in solution

Answer 11

the ions can freely move around and conduct electricity

Question 12

Ionic compounds only conduct electricity when molten or in solution, in the solid state

Answer 12

they’re in a fixed position and unable to move around

Question 13

Metallic structures are malleable, when a force is applied

Answer 13

the metal layers can slide

Question 14

Metallic structures are malleable, the attractive forces between

Answer 14

the metal ions and electrons act in all directions

Question 15

Metallic structures are malleable, so when the layers slide

Answer 15

the metallic bonds are re-formed

Question 16

Metallic structures are malleable, the lattice is

Answer 16

not broken and has changed shape

Question 17

Metallic lattices are strong and hard, due to

Answer 17

the strong attractive forces between the metal ions and delocalised electrons

Question 18

Metals have high

Answer 18

melting and boiling points

Question 19

Pure metals are what in water

Answer 19

insoluble

Question 20

Metals can conduct electricity when in

Answer 20

the solid or liquid state

Question 21

Metals can conduct electricity when in the solid or liquid state, as both in the solid and liquid state

Answer 21

there are mobile electrons which can freely move around and conduct electricity

Question 22

Metals are malleable as the layers can slide over each without breaking the attraction diagram

Answer 22

Question 23

Simple covalent lattices have low

Answer 23

melting and boiling points

Question 24

Simple covalent lattices have low melting and boiling points, these compounds have

Answer 24

weak intermolecular forces between the molecules

Question 25

Simple covalent lattices have low melting and boiling points, only little energy

Answer 25

is required to break the lattice

Question 26

Most compounds are insoluble with water, unless

Answer 26

they are polar and can form hydrogen bonds (such as sucrose)

Question 27

Simple covalent lattices do not conduct electricity in the solid or liquid state as

Answer 27

there are no charged particles

Question 28

Some simple covalent compounds do conduct electricity in solution, but

Answer 28

this is a reaction with the water than produces ions such as HCl which forms H+ and Cl- ions

Question 29

Giant covalent lattices have very high

Answer 29

melting and boiling points

Question 30

Giant covalent lattices have very high melting and boiling points, these compounds have a large number of

Answer 30

covalent bonds linking the whole structure

Question 31

Giant covalent lattices have very high melting and boiling points, a lot of energy is required to

Answer 31

break the lattice

Question 32

Giant covalent lattices compounds can be

Answer 32

hard or soft

Question 33

Graphite is soft as

Answer 33

the forces between the carbon layers are weak

Question 34

Diamond and silicon(IV) oxide are hard as

Answer 34

it is difficult to break their 3D network of strong covalent bonds

Question 35

Most compounds do not conduct electricity however some do, graphite has

Answer 35

delocalised electrons between the carbon layers which can move along the layers when a voltage is applied

Question 36

Most compounds do not conduct electricity however some do, diamond and silicon(IV) oxide

Answer 36

do not conduct electricity

Question 37

Most compounds do not conduct electricity however some do, diamond and silicon(IV) oxide do not conduct electricity as

Answer 37

all four outer electrons on every carbon atom are involved in a covalent bond so there are no freely moving electrons available

Question 38

Characteristics of Different Compound Structure Types Table

Answer 38

Question 39

Answer 39