4.2 - Separating insoluble substances - Archive

Question 1

What are the properties and efficiency of fluted filter paper?

Answer 1

.Fluted filter paper provides a larger surface area for filtration, increasing flow rate and loading capacity.

Question 2

What does the term ‘insoluble’ mean?

Answer 2

A substance that CANNOT dissolve in a solvent

Question 3

What is the name of the liquid that results after filtering a mixture?

Answer 3

Filtrate

Question 4

How does centrifuging work?

Answer 4

By spinning the mixture at high speeds, causing the denser components to move to the bottom

Question 5

You are given a mixture of iron filings, sand and salt. What is the correct order in which separation techniques would be used to separate each substance?

Answer 5

Magnetic separation, filtering, evaporation

Question 6

Which type of filter paper is more efficient in terms of speed in the filtration process?

Answer 6

Fluted filter paper

Question 7

Which separation technique is best for separating solids from liquids?

Answer 7

Filtration or seiving

Question 8

What is the difference between a concentrated and dilute solution?

Answer 8

A concentrated solution has lots of solute dissolved, whereas a dilute solution has less solute dissolved

Question 9

How does fluted filter paper differ from conical filter paper?

Answer 9

Fluted filter paper has grooves (more surface area), while conical filter paper has a cylindrical shape (less surface area)

Question 10

How does magnetic separation work?

Answer 10

Serapates magnetic objects from non - magnetic object

Question 11

What is gravity separation?

Answer 11

It is when you use gravity to separate heavier things from lighter things. For example gold panning, where the heavier gold falls to the bottom and the muddy water gets poured off.

Question 12

What is decantation?

Answer 12

Decantation is a type of gravity separation method where the suspensions of solids and liquids separate naturally.

Question 13

How does sieving work?

Answer 13

A sieve is a barrier with holes in it, which lets liquids and other smaller objects out, and leaves the bigger ones in the net.

Question 14

What is filtration?

Answer 14

A filter is like a sieve, but has microscopic holes and can filter many different things like:
- solids from gases
- solids from liquids
- liquids from gases
- liquids from other liquids