12. Sulfur

Question 1

Source of sulfur

Answer 1

Uncombined in layers under ground
Combine with metal in ores eg ZnS(zinc blende), PbS(galena)
Natural gas and petroleum also contain S, mainly as H2S

Question 2

Use of sulfur

Answer 2

manufacture sulfuric acid
make rubber tyre more flexible
making dyes

Question 3

source of sulfur dioxide

Answer 3

burn sulfur

Roasting ores

Question 4

Use of sulfur dioxide

Answer 4

bleach during the manufacture of paper from wood pulp

Use to preserve food and drink, killing ant bacteria present

Question 5

Properties of H2SO4

Answer 5

react with metals above H in the reactivity series to form a salt and hydrogen
react with metal oxides to form a salt and water
react with metal hydroxide to form a salt and water
react with carbonate to form a salt, water and co2
form hydrogensulfates salt and water by the replacement of one of the hydrogen ions in the sulfuric acid