at different rates over the use of chromatography in water-soluble marker pens, enough to hold rolled paper identifying a forgery labelled A to D. Selection of chromatography (search for ‘CSI four or more pens of one paper); solvent chromatography’ on the colour (blue or black) with (mixture of butan-1-ol, Interpret a paper C2.6 internet) different combinations of dyes ethanoic acid and water chromatogram a to distinguish between in the ink, labelled Suspect 1, in the ratio 4:1:2 by Suspect 2 etc; pre-prepared volume), ninhyrdin pure and impure substances chromatogram made using spray (2% ninhydrin in b to identify substances one of the pens, using the butan-1-ol), eye by comparison with known same paper that students will protection, access to substances use; suitable solvent (see fume cupboard, c to identify substances above) if the pens to be tested by calculation and the use of rf have permanent inks. chromatogram, values (links to a Maths statement). chromatogram sprayed NB The practical can be run with ninhydrin and Investigate the composition of C3.7 without the ‘poison pen’ baked. inks using simple … paper scenario chromatography Digital: to follow C2d Distillation C3.3 Explain the experimental To follow To follow To follow techniques for separation of mixtures by a simple distillation b fractional distillation (links to a Maths statement). Evaluate the risks in a practical C0.6 procedure and suggest suitable
C2.6 C3.7 at different rates over the paper Interpret a paper chromatogram a to distinguish between pure and impure substances b to identify substances by comparison with known substances c to identify substances by calculation and the use of rf values (links to a Maths statement). Investigate the composition of inks using simple … paper chromatography use of chromatography in identifying a forgery (search for ‘CSI chromatography’ on the internet) water-soluble marker pens, labelled A to D. Selection of four or more pens of one colour (blue or black) with different combinations of dyes in the ink, labelled Suspect 1, Suspect 2 etc; pre-prepared chromatogram made using one of the pens, using the same paper that students will use; suitable solvent (see above) if the pens to be tested have permanent inks. NB The practical can be run without the ‘poison pen’ scenario enough to hold rolled chromatography paper); solvent (mixture of butan-1-ol, ethanoic acid and water in the ratio 4:1:2 by volume), ninhyrdin spray (2% ninhydrin in butan-1-ol), eye protection, access to fume cupboard, chromatogram, chromatogram sprayed with ninhydrin and baked. Digital: to follow C2d Distillation C3.3 C0.6 Explain the experimental techniques for separation of mixtures by a simple distillation b fractional distillation (links to a Maths statement). Evaluate the risks in a practical procedure and suggest suitable To follow To follow To follow
GCSE9-1ScienceTerm1detailedplanning-UPDATE1.docx