sc5, ionic bonding (paper 1 and 2)

Question 1

define ionic bonds

Answer 1

strong electrostatic forces between oppositely charges ions

Question 2

define anion

Answer 2

negative ion (gained electron)

Question 3

define cation

Answer 3

positive ion (lost electron)

Question 4

what is the charge of an ion in group 1

Answer 4

+1

Question 5

what is the charge of an ion in group 2

Answer 5

+2

Question 6

what is the charge of an ion in group 6

Answer 6

-2

Question 7

what is the charge of an ion in group 7

Answer 7

-1

Question 8

describe the structure of an ionic compound

Answer 8

regular arrangement of oppositely charged ions in a lattice

Question 9

describe the physical properties of an ionic compound

Answer 9

• high melting and boiling point
• large amounts of energy must be transferred to break the electrostatic bonds
• can be expensive

Question 10

describe the solubility of an ionic compound

Answer 10

• often soluble in water
• dissove to form aqueous solutions

Question 11

describe the conductive ability of an ionic compound

Answer 11

• can conduct heat/electricity in molten solution as there are delocalized electrons
• not in solid

Question 12

what do ionic compounds often form because of their structure

Answer 12

crystals

Question 13

define polyatomic ions

Answer 13

ions containing one or more atoms

Question 14

what does an ion ending in ‘ite’ or ‘ate’ tell us

Answer 14

the ion contains oxygen as well as another element