Simple and Fractional Distillation (Edexcel GCSE Chemistry): Flashcards
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Fractional distillation definition
Fractional distillation definition
Process that separates mixture into components by different boiling points
What is crude oil?
What is crude oil?
Complex mixture of hydrocarbons from ground
What are fractions in crude oil?
What are fractions in crude oil?
Simpler mixtures of hydrocarbons with similar properties
What do fractions contain?
What do fractions contain?
Hydrocarbons with similar carbon chain lengths
Temperature in fractionating column
Temperature in fractionating column
Hottest at bottom, cools as you move up
Where do high boiling point hydrocarbons condense?
Where do high boiling point hydrocarbons condense?
Lower in column where temperature is higher
Where do low boiling point hydrocarbons go?
Where do low boiling point hydrocarbons go?
Rise higher up the column
Simple distillation definition
Simple distillation definition
Separates liquid from solution with different boiling points
Simple distillation examples
Simple distillation examples
Water from seawater, ink from water
What evaporates first in simple distillation?
What evaporates first in simple distillation?
Component with lower boiling point
Role of condenser in distillation
Role of condenser in distillation
Cools vapour to turn it back to liquid
When does simple distillation work best?
When does simple distillation work best?
When liquids have significantly different boiling points