Topic 4 (Seperation Techniques) Flashcards
What is a solute?
A solid that will dissolve in a liquid solvent
What is a solution?
A mixture produced when a solute dissolves in a solvent
What type of boiling point do liquids that are easily evaporated have?
Low
What is separated by filtration?
An insoluble solid and water
What is the chemical name for table salt?
Sodium chloride
Give examples of mixtures which can be separated by filtration
- flour and water
- charcoal and water
- dirt and water
What is the boiling point of ethanol?
78 degrees Celsius
What is chromatography?
Chromatography is the technique used to separate dyes found in a mixture.
Name one area chromatography can be used in
- pharmaceutical chemists
- forensic chemists
- environmental chemists
What is the main advantage of carrying out chromatography?
A small sample is required
What are two liquids that will not mix well together known as?
Immiscible liquids
What will immiscible liquids be separated with?
A separating funnel
Name 2 products that come from oil
- crayons
- plastics
- heating oil
- jet fuel
- Kerosene
What does the term “crude oil” stand for?
Unprocessed oil
Give an example of two immiscible liquids
Oil and water
