Separation Techniques

Question 1

What is the process of separation by decantation?

Answer 1

1. pour mixture in with tap closed
2. wait until solution separates into different layers
3. open tap to allow only bottom layer into beaker
4. pour upper layer out from top

Question 2

How does decantation separate mixture?

Answer 2

• It uses the difference in density of ingredients
• only works for immiscible solutions

Question 3

How does separation by filtration separate solutions?

Answer 3

Uses the difference in size of particles

Question 4

How does separation of distillation work?

Answer 4

Uses the difference in boiling point of particles to separate substance

Question 5

What are the best ways to separate mechanical mixture (heterogenous mixture)

Answer 5

• Filtration
• Distillation

Question 6

What is the qualitative analysis and filtration technique?

Answer 6

Used for homogenous solutions when the solutions contains dissolved ionic compounds
* only one ion can precipitate at a time