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Questions and Answers
What is tar and how is it produced?
Tar is a dark brown or black viscous liquid of hydrocarbons and free carbon, obtained from a wide variety of organic materials through destructive distillation. It can be produced from coal, wood, petroleum, or peat.
How can 'tar' and 'pitch' be used interchangeably?
Both 'tar' and 'pitch' can be used interchangeably; asphalt (naturally occurring pitch) may also be called either 'mineral tar' or 'mineral pitch'.
What is the difference between 'tar' and 'pitch' in terms of their physical state?
There is a tendency to use 'tar' for more liquid substances and 'pitch' for more solid (viscoelastic) substances.
What is 'Rangoon tar' and what is it also known as?
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Where are oil sands found and what are they composed of?
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