Describe the difference in boiling point, colour and viscosity between the fuel oil and gasoline fractions.
The fuel oil fraction has a higher boiling point. It is also dark brown in colour while the gasoline fraction is yellow. It is also more viscous (thicker and flows less easily) due to the fuel oil molecules being larger and the chains being longer.
JJ
Related Chemistry GCSE answers
All answers ▸Describe how and explain why vegetable oils are hardened for use in foods. [5 marks]
Coal is a fossil fuel and in constant debates for its negative impacts on the environment. Which elements does it consist of and which products are being formed when it is burned? Give two examples for the effects on the environment.
Potassium forms an ionic compound with sulfur. Describe what happens when two atoms of potassium react with one atom of sulfur. Give your answer in terms of electron transfer. Give the formulae of the ions formed.
What is ionic bonding and what are the characteristics of this type of bonding?