C2 States of matter and Mixtures

Describe states of matter: including energy, arrangement and movement

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Conversions between solid liquid and gas

Physical changes:

Melting

Freezing

Evaporation

Condensation

Sublimation = solid to gas

Meaning of pure in chemical

Containing only one type of element or compound

Simple distillation

Separates liquids with different boiling points (fractional distillation has a fractioning column)

filtration

filter

crystallisation

separates a solid dissolved in a liquid by cooling the solution causing the solid to form crystals

paper chromatography

seperates components of a mixture based on differnet solubilities

Core practical: paper chromatogaphy

• draw a line at the bottom of a page

• place the bottom of the paper in solvent in a container

• allow the solvent to move up the paper

• once the solvent front reaches the top remove the paper and allow it to dry

how can waste and ground water be made potable

1. sedimentaion

2. filtration

3. chlorination

making sea water potable

distillation - water in any potability analysis must not contain any dissolved salts so it dosent interfere with the analysis