Seperating Mixtures Flashcards
What’s physical change
No change in particles just the particle arrangement and energy easy to reverse e.g mixing water and salt
What’s a chemical change
A chemical reaction takes place and a new substance if formed very difficult to reverse e.g burning a match
During a chemical reaction
The atoms rearrange to form a new substance might be seen by colour change tempature change light being emitted or bubbles
Law of conservation of mass
Matter can be changed from one form to another during physical and chemical changes there is no overall change in mass
Filtration
Used to separate small insoluble solids (do not dissolve in a liquid) from a liquid by using filter paper and a funnel to trap the solids
Distilisation
Used to seperate two liquids with different boiling points such as as alcohol (boils at 78 degrees)and water (boils at 100 degrees)also used to seperate soluble solid from a a liquid (e.g seawater )
Chromatography
Used to seperate a mixture of dissolved substances in a solution e.g the different colours in a black marker
Soluble
Dissolves in a liquid
Insoluble
Does not dissolve in a liquid
Mixture
Consists of two or more substances mingled together but not chemically combined
Residue
The soil left in the filter paper after filtration
Filtrate
The clean water that comes after filtration
Evaporation
Used to seperate a soluble solid from a liquid e.g salt and water
Solvent
The liquid that a solid dissolved into
Miscible
Liquids that mix together e.g.
alcohol and
water
