C1.4 - Fractional distillation and paper chromatography Flashcards Preview

GCSE Chemistry Required Practicals > C1.4 - Fractional distillation and paper chromatography > Flashcards

Flashcards in C1.4 - Fractional distillation and paper chromatography Deck (8):
1

The 1st step in fractional distillation

The 1st step in fractional distillation is that:
1. You put your mixture in a flask and stick a fractionating column on top
2. Then you heat it

2

The 1st step in fractional distillation is that you put your mixture in a flask and stick a fractionating column on top and then you heat it.
The different liquids will all have different boiling points, so they will what?

The different liquids will all have different boiling points, so they will evaporate at different temperatures

3

The 1st step in fractional distillation is that you put your mixture in a flask and stick a fractionating column on top and then you heat it.
The different liquids will all have different boiling points, so they will evaporate at different temperatures.
Which liquid evaporates first?

The liquid with the lowest boiling point evaporates first

4

The 1st step in fractional distillation is that you put your mixture in a flask and stick a fractionating column on top and then you heat it.
The different liquids will all have different boiling points, so they will evaporate at different temperatures.
The liquid with the lowest boiling point evaporates first.
When the temperature on the thermometer matches the boiling point of this liquid, it will reach the top of the column.
Liquids with higher boiling points might also what?

Liquids with higher boiling points might also start to evaporate

5

The 1st step in fractional distillation is that you put your mixture in a flask and stick a fractionating column on top and then you heat it.
The different liquids will all have different boiling points, so they will evaporate at different temperatures.
The liquid with the lowest boiling point evaporates first.
When the temperature on the thermometer matches the boiling point of this liquid, it will reach the top of the column.
Liquids with higher boiling points might also start to evaporate.
When the first liquid has been collected, you do what until the next one reaches the top?

When the first liquid has been collected, you raise the temperature until the next one reaches the top

6

The 1st step in fractional distillation is that you put your mixture in a flask and stick a fractionating column on top and then you heat it.
The different liquids will all have different boiling points, so they will evaporate at different temperatures.
The liquid with the lowest boiling point evaporates first.
When the temperature on the thermometer matches the boiling point of this liquid, it will reach the top of the column.
Liquids with higher boiling points might also start to evaporate, but the column is what towards the top?

Liquids with higher boiling points might also start to evaporate, but the column is cooler towards the top

7

The 1st step in fractional distillation is that you put your mixture in a flask and stick a fractionating column on top and then you heat it.
The different liquids will all have different boiling points, so they will evaporate at different temperatures.
The liquid with the lowest boiling point evaporates first.
When the temperature on the thermometer matches the boiling point of this liquid, it will reach the top of the column.
Liquids with higher boiling points might also start to evaporate, but the column is cooler towards the top, so they will only do what before condensing and running back down towards the flask?

Liquids with higher boiling points might also start to evaporate, but the column is cooler towards the top, so they will only get part of the way up before:
1. Condensing
2. Running back down towards the flask

8

The 1st step in fractional distillation is that you put your mixture in a flask and stick a fractionating column on top and then you heat it.
The different liquids will all have different boiling points, so they will evaporate at different temperatures.
The liquid with the lowest boiling point evaporates first.
When the temperature on the thermometer matches the boiling point of this liquid, it will do what?

When the temperature on the thermometer matches the boiling point of this liquid, it will reach the top of the column