Chapter 12 SULFUR

1. Sir. Muhammad Abdul Mageid
CIE - IGCSE Chemistry
Chapter 12 SULFUR
12.1 – Sulfur – the element

2. Contents
12.2 –Sulfur dioxide
12.1- Sulfur – The element
12.3 – Sulfuric acid
Sir. Muhammad Abdul Mageid

3. Saturday, August 15, 2020
12.1 – Sulfur – the element
sulfur:
 Sulfur is a yellow non-metallic element.
 It is found in Group VI of the Periodic Table.
 It is a brittle, non-conducting solid with a fairly low melting point(115 °C).
 Sulfur will not dissolve in water but will dissolve in solvents such as carbon
disulfide and methylbenzene (toluene).
 Like carbon, sulfur has allotropes. Its main allotropes are called rhombic
sulfur and monoclinic sulfur
Sir. Muhammad Abdul Mageid

4. Saturday, August 15, 2020
12.1 - Sulfur: Sources & Uses
Sources of sulfur:
 Sulfur is found in its elemental state underground in the USA, Mexico
and Poland
 It is also a by-product from the removal of sulfur
from petroleum and natural gas
 Sulfur can also be obtained from sulfide ores
as copper pyrites or chalcopyrite (𝐶𝑢𝐹𝑒𝑆2)
and zinc blende (𝑍𝑛𝑆)
Sir. Muhammad Abdul Mageid

5. Saturday, August 15, 2020
12.1 - Sulfur: Sources & Uses
Uses of sulfur
 The main use of sulfur is in making sulphuric acid which is a very
important chemical used in many industries
 It is also used extensively in making rubber tyres more flexible
,where the rubber is heated with sulfur
Sir. Muhammad Abdul Mageid

6. Saturday, August 15, 2020
12.1 - Sulfur: Chemical Properties
Chemical properties of sulfur:
Sulfur will react with both metals and non-metals.
● It reacts with magnesium metal to form magnesium sulfide.
𝑴𝒈(𝒔) + 𝑺(𝒔) → 𝑴𝒈𝑺(𝒔)
● It reacts with oxygen to produce sulfur dioxide gas.
𝑺(𝒔) + 𝑶 𝟐(𝒈) → 𝑺𝑶 𝟐(𝒈)
Sir. Muhammad Abdul Mageid

7. Questions
Sir. Muhammad Abdul Mageid
1 Sulfur has an atomic number of 16 and it is represented as 𝟏𝟔
𝟑𝟐
𝑺:
a- How many electrons, protons and neutrons does a sulfur atom contain?
b- How many electrons will there be in the outer shell (energy level) of this atom?
c- To which group of the Periodic Table does sulfur belong?
d- Write down the names of two other elements found in the same group as sulfur.
e- Write down the formula of the ion that sulfur will form in reactions with metals
such as magnesium.
f- Sulfur will react with powdered calcium when the mixture is heated.
Write a word and a balanced chemical equation for this reaction.
g- Give two large-scale uses of sulfur.