Get premium membership and access questions with answers, video lessons as well as revision papers.
State and explain four physical properties of Sulphur.
1. - It is a yellow solid which exists in one amorphous form and 2 crystalline forms.
- A molecule of sulphur consists of a pluckered ring of 8 sulphur atoms covalently bonded.
2. Solubility
- It is insoluble in water but soluble in organic solvents like carbon disulphide, xylene and toluene.
3. It is a poor conductor of heat and electricity since it is a covalent element lacking free electrons or ions.
4. Effects of heat
- When sulphur is heated out of contact with air, it melts at low temperatures of about 113oC to form an amber (orange) coloured mobile liquid.
Reason:
- The S8 rings open up to form chains of S8.
mainakelvin39 answered the question on September 27, 2017 at 06:07
- Name the two allotropes of sulphur(Solved)
Name the two allotropes of sulphur
Date posted: September 26, 2017. Answers (1)
- State three uses of hydrogen nitrate(Solved)
State three uses of hydrogen nitrate
Date posted: September 26, 2017. Answers (1)
- Define the term catenation?(Solved)
Define the term catenation?
Date posted: September 26, 2017. Answers (1)
- Both graphite and molten sodium chloride conduct electricity,state how each of the substances conduct electricity?(Solved)
Both graphite and molten sodium chloride conduct electricity,state how each of the substances conduct electricity?
Date posted: September 26, 2017. Answers (1)
- List five substances that undergo sublimation?(Solved)
List five substances that undergo sublimation?
Date posted: September 26, 2017. Answers (1)
- Define the term sublimation(Solved)
Define the term sublimation
Date posted: September 26, 2017. Answers (1)
- Define the term chromatography?(Solved)
Define the term chromatography?
Date posted: September 26, 2017. Answers (1)
- Name three methods used in separation of mixtures?(Solved)
Name three methods used in separation of mixtures?
Date posted: September 26, 2017. Answers (1)
- What is a conductor?(Solved)
What is a conductor?
Date posted: September 26, 2017. Answers (1)
- Define the term flame?(Solved)
Define the term flame?
Date posted: September 26, 2017. Answers (1)
- An experiment was carried out to investigate the rate of reaction shown below
Sucrose ?Fructose + Glucose ...(Solved)
An experiment was carried out to investigate the rate of reaction shown below
Sucrose →Fructose + Glucose
For the products fructose and glucose to be formed, it was found that substance K was to be added and the temperature maintained at 370C. When another substance L was added, the reaction slowed down and eventually stopped
a) Suggest the identify of substances K and L
b) Other than temperature state three ways by which the rate of reaction could be increased
c) Explain how substance L slowed down the reaction
Date posted: September 25, 2017. Answers (1)
- Write an equation for the reaction that takes place when equal volumes of chlorine gas react with propane(Solved)
Write an equation for the reaction that takes place when equal volumes of chlorine gas react with propane
Date posted: September 25, 2017. Answers (1)
- Gas Q takes 100 seconds to diffuse through a porous pot. Gas Q has a relative molecular mass of 34. Determine how long it will...(Solved)
Gas Q takes 100 seconds to diffuse through a porous pot. Gas Q has a relative molecular mass of 34. Determine how long it will take sulphur (IV) oxide gas to diffuse under the same condition? (S = 32, O = 16,)
Date posted: September 25, 2017. Answers (1)
- What is meant by hard water?(Solved)
What is meant by hard water?
Date posted: September 25, 2017. Answers (1)
- Briefly describe what happens when solids are heated(Solved)
Briefly describe what happens when solids are heated
Date posted: September 24, 2017. Answers (1)
- Explain the Kinetic Particle Theory(Solved)
Explain the Kinetic Particle Theory
Date posted: September 24, 2017. Answers (1)
- State the uses of water in frasch process(Solved)
State uses of water in frasch process
Date posted: September 24, 2017. Answers (1)
- Why is a glass container for sampling and storage inappropriate(Solved)
Why is a glass container for sampling and storage inappropriate
Date posted: September 20, 2017.
- State two chemical tests for the presence of water(Solved)
State two chemical tests for the presence of water
Date posted: September 19, 2017. Answers (1)
- What is oxidation agent?(Solved)
What is oxidation agent?
Date posted: September 19, 2017. Answers (1)