separation techniques

Question 1

explain the separation technique for evaporation

Answer 1

Evaporation is when you use a funnel and filter paper to separate the solvent and the insoluble solid

Question 2

Explain distillation

Answer 2

distillation separates a solvent from a solution using evaporation and condensation

Question 3

Decanting

Answer 3

pouring

Question 4

disadvantage of evaporation

Answer 4

The disadvantage of evaporation is that we lose the solvent

Question 5

pure substances melting and boiling points

Answer 5

they are at one singular temperature

Question 6

mixtures melting and boiling temperatures

Answer 6

a range of temperatures

Question 7

How do you conduct distillation

Answer 7

Firstly you need to heat/evaporate the liquid/substance then condense it. Finally, collect the distillate

Question 8

what is distillate

Answer 8

something formed by distillation

Question 9

How can filtration be used

Answer 9

It can be used to separate an insoluble solid from a liquid. The filtrate of the liquid is collected at the end

Question 10

What is filtrate

Answer 10

the fluid that has passed through the filter

Question 11

what is crystallisation

Answer 11

a way to separate a solid from a solution by letting it form crystals

Question 12

How do you conduct filtration

Answer 12

Firstly, place the funnel in the beaker securely. Secondly fold the filter paper into a cone shape and fit into the funnel. Slowly pour the mixture into the funnel, the liquid will go through the filter paper leaving behind the solid. Finally, collect the filtrate (the liquid) and the solid residue and do whatever you want with it.

Question 12

Steps for crystallisation

Answer 12

Firstly, pour the substance into an evaporation basin. Secondly, Heat the solution gently until some water has evaporated. Thirdly, remove the heat and allow the basin to cool. Then, leave the solution in a warm place to finish evaporating slowly. Finally, collect and dry the crystals.