Structure and properties

Question 1

the physical properties of a substance are determined by

Answer 1

the type of bonding and structure it has

Question 2

if a substance conducts electricity when solid, then it is……..bonding and…………………….in structure

Answer 2

metallic bonding and giant lattice

Question 3

if a substance does not conduct electricity when solid, then it is either………..or …………………….in bonding

Answer 3

ionic or covalent

Question 4

if a substance conducts electricity when molten (not metallic), then it is……………………..bonding and …………………………….in structure

Answer 4

ionic bonding and giant lattice

Question 5

if a substance does not conduct electricity when molten, then is is…………………….in bonding

Answer 5

covalent

Question 6

if a substance which does not conduct when molten but has a high melting point, then it is………………in structure

Answer 6

giant lattice

Question 7

if a substance which does not conduct when molten but has a low melting point, then it is………………in structure

Answer 7

molecular

Question 8

Mg, Al, Cu and Zn are…………in bonding and …………..in structure

Answer 8

metallic, giant lattice

Question 9

NaCl, MgO and CsF are…………in bonding and …………..in structure

Answer 9

ionic and giant lattice

Question 10

the three types of structure for covalent bonding (including polar covalent) are

Answer 10

• giant lattice
• molecular
• macromolecular

Question 11

graphite is an exception because even though it has a ………………….structure it is a good……………………………….

Answer 11

giant covalent, good conductor of electricity when solid

Question 12

• Properties of: Giant metallic structure
• Particles present:
• Type of bonding:
• Intermolecular forces of attraction:
• Melting and boiling temps:
• Electrical conductivity:
• Solubility in water:

Answer 12

• Properties of: Giant metallic structure
• Particles present: positive ions and delocalised electrons
• Type of bonding:metallic
• Intermolecular forces of attraction: none
• Melting and boiling temps: fairly high to high
• Electrical conductivity:good when solid and molten
• Solubility in water:insoluble unless metal reacts with water (eg sodium)

Question 13

• Properties of: Giant ionic structure
• Particles present:
• Type of bonding:
• Intermolecular forces of attraction:
• Melting and boiling temps:
• Electrical conductivity:
• Solubility in water:

Answer 13

• Properties of: Giant ionic structure
• Particles present: positive ad negative ions
• Type of bonding:ionic
• Intermolecular forces of attraction: none
• Melting and boiling temps: fairly high to high
• Electrical conductivity: no when solid, good when molten
• Solubility in water:generally yes (exceptions: AgCl, AgBr, BaSO4)

Question 14

• Properties of: Giant covalent structure
• Particles present:
• Type of bonding:
• Intermolecular forces of attraction:
• Melting and boiling temps:
• Electrical conductivity:
• Solubility in water:

Answer 14

• Properties of: Giant covalent structure
• Particles present:atoms
• Type of bonding: covalent
• Intermolecular forces of attraction: none
• Melting and boiling temps:high to very high
• Electrical conductivity: no
• Solubility in water: insoluble

Question 15

• Properties of: Molecular structure
• Particles present:
• Type of bonding:
• Intermolecular forces of attraction:
• Melting and boiling temps:
• Electrical conductivity:
• Solubility in water:

Answer 15

• Properties of: Molecular structure
• Particles present: molecules
• Type of bonding: covalent
• Intermolecular forces of attraction: yes
• Melting and boiling temps:generally low
• Electrical conductivity: no
• Solubility in water: generally insoluble, but may dissolve if hydrogen bonding is possible (sucrose) or is substance reacts with water (eg Cl2)