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year 8 chemistry revision part 1 - Coggle Diagram
year 8 chemistry revision part 1
Pure substances
Definition
Pure is 100% made of a material such as pure gold is only made of gold and no other chemicals or subtances( made of only one substance)
synonyms
100%, complete , whole
antonyms
impure, fake, incomplete and 60%, mixture
what are some examples of some
water is only sometimes pure if it is distilled however tap water is not pure as it contains chemicals
orange juice is not pure as it has vitaimins, cictric acid, water and alot more chemicals
Seperating techniques
what are the seperating techniques
Filter paper - size , boiling water, evaporation- boiling point, chromotography- solubillity, sieve- size, using a magnet -by magnet property
Filtration
Key facts
filtrate is the the liquid/ soulution that can pass through the filter paper and residue is the insoluble solid that is left over.
equipment
filter paper, cornoical flask, filter funnel, and a solution
filtration seperates a liquid from an insoluble solid or a solution . filter paper contains tiny holes some particles that cannot pass through it then it leaves up with the filtrate and the residue
chromtography
chromatography is a method for seperationg dissolved solutes from one and other
examples
Find DNA from things like blood, dye and fingerprints. testing for different meats
antoyms
mixing and assembling