Module 2 - Separation

Question 1

What should you consider when separating a mixture?

Answer 1

Type of mixture (homogeneous or heterogeneous).
Properties of the components (size, density, solubility, boiling point).

Question 2

Handpicking

Answer 2

Handpicking is used for separating larger size impurities (like dirt, stone ) from wheat rice.

Question 3

Threshing

Answer 3

Threshing is a process used to separate grain from stacks, by beating the stacks to free the grain.

Question 4

Winnowing

Answer 4

Winnowing is a process used to separate heavier or lighter components of a mixture via wind.

Question 5

Sieving

Answer 5

Sieving allows fine flow particles to pass through the holes of a sieve while the biggest impurities remain on the sieve.

Question 6

What is distillation?

Answer 6

Separating specific components from a liquid by evaporating.

Question 7

What is chromatography?

Answer 7

Chromatography is a technique that separates components of a mixture based on their different interactions with two phases: a stationary phase and a mobile phase.