C2.1.2 Ions

Question 1

What are polyatomic ions

Answer 1

When an ion contains atoms of more than one element bonded together

Question 2

nitrate formula + ionic charge

Answer 2

NO3 -

Question 3

Sulfate charge + formulae

Answer 3

SO4 2-

Question 4

Carbonate formula + ionic charge

Answer 4

CO3 2-

Question 5

Hydroxide charge + formula

Answer 5

OH -

Question 6

Ammonium charge + formulae

Answer 6

NH4 +

Question 7

Zinc formula + charge

Answer 7

Zn 2+

Question 8

Silver formula + charge

Answer 8

Ag +

Question 9

Metals (on the left) are […]

Answer 9

Positive (cations)

Question 10

Non-metals (on the right) are […]

Answer 10

Negative (anions)

Question 11

Ionic charges on periodic table using groups

Answer 11

Group l: +1
Group 2: +2
Group 3: +3

Group 4: -> rarely form ions (they tend to share)

Group 5: -3
Group 6: -2
Group 7: -

Group 8/0: no reactions

Question 12

Ionic formulae worked example (zinc chloride)

Answer 12

1 Zn2+ ion balances 2 Cl-ions
-> leading to 1Zn (2+) 2Cl (-) -> ZnCl2

Question 13

Ionic formulae worked example (aluminum sulfate)

Answer 13

2 AI (3+) is balanced by 3 SO4 (2-)
-> this gives us Al2(SO4)3

Question 14

An ionic compound contains

Answer 14

A cation and an anion