Technicians’ advance planning sheet Module C1: Air quality This table shows items which may need to be ordered or prepared in advance for this module. It does not list standard items, for example, test tubes, beakers, thermometers etc. Full details of the resources needed for each activity are given in the Requirements section of the Teacher & Technician notes published by OUP, which also include safety information for the activity. Activity Item(s) Quantity Notes AC1.1.1 Transparent empty box Clapper bell in round flask Rubber bung to fit flask 1 1 1 Wire the clapper bell to a length of rubber tube and suspend it inside the flask. Do not use wire supports in place of the rubber tubing. AC1.1.2 Stain Devil ® may be useful for cleaning test tubes after this activity. AC1.2.1 Birthday candles At least 15 AC1.2.2 Test tube of oxygen gas with bung 1 AC1.2.3 2-litre plastic soft drinks bottle with the bottom cut off Rubber bung to fit the neck of the bottle Glass trough Sheet aluminium platform Beer-bottle top, with the plastic insert burnt out Blow torch Red phosphorus 1 AC1.3.1 Diet cola Mentos mints Paper tube Square of card 2-litre bottle 1 packet 1 1 AC1.3.3 Journal cards 4 per pair from activity sheet AC1.4.1 Roll sulfur Acid-base indicator solution Paraffin 1 < 0.5 cm cube 1 bottle Few cm3 AC1.5.1 A variety of timing devices 1 per pair 1 1 1 1 1 0.5 g © in this format University of York (UYSEG) and Nuffield Foundation 2011 The sheet aluminium platform should be constructed so that it stands above the level of water when it is resting on the bottom of the glass trough, and the glass trough is half filled with water. It needs to fit inside the plastic bottle. Burn out the plastic from inside the bottle top in a fume cupboard. The paper tube should be just long enough to hold a packet of mints and just wide enough so that the mints to stack up on top of each other but slide through the tube easily. Timing devices might include digital stop clocks and older analogue stop clocks. It is important a range of different timing devices are used. page 1 AC1.5.2 Small pieces of broken pottery 2 per group AC1.5.3 Double sided sticky tape 1 roll AC1.7.1 Solid fuels Liquid fuels Tin lids Few small pieces Few cm3 2 AC1.8.1 Potassium chlorate (V) (reagent grade) Jelly baby Oxygen Charcoal 15 g AC1.9.1 Ethanol Few cm3 AC1.9.2 500 ml plastic soft-drink bottle with base removed Washing-up liquid Glycerol Propan-2-ol 1 Anhydrous copper sulfate or cobalt chloride paper Fuel to burn 1 container 1 piece Few cm3 AC1.9.3 Ensure tin lids have previously been heated to remove any volatile coatings. 1 per demonstration 1 tube per group 1 small piece per group 8 cm3 4 cm3 50 cm3 © in this format University of York (UYSEG) and Nuffield Foundation 2011 page 2 Technicians’ advance planning sheet Module C2: Material choices This table shows items which may need to be ordered or prepared in advance for this module. It does not list standard items, for example, test tubes, beakers, thermometers etc. Full details of the resources needed for each activity are given in the Requirements section of the Teacher & Technician notes published by OUP, which also include safety information for the activity. Activity Item(s) Quantity Notes AC2.1.1 Digestive biscuit Polythene webbing that holds four-pack drinks Fruit jelly Ceramic house brick Steel tool 1 1 Steel tool could be a chisel, screwdriver or hammer. Lengths of thick wooden dowel Copper wire, steel wire, nylon filament, rubber bands 3 cm x 10 cm samples and about 0.5 mm thick: sheet copper, steel, polythene, pottery, glass Large iron nail (blunted) 3 cm x 5 cm samples: sheet copper, steel, polythene, pottery, glass Large iron nail, larger samples of materials roughly same volume, brass weight, lump of lead, solid rubber ball, objects made of porcelain 0.5 cm x 0.5 cm samples: sheet copper, steel, tin, polythene, pottery, glass Few pieces Several of each ABS: Lego bricks, casing for laptops, car bumpers, dashboards, hub covers Aramid: golf club handles, tennis racket frame, bullet proof vests (as Kevlar) Polyamide (nylon): racket strings, fishing line, curtain rail fittings, some plastic hinges, toothbrush bristles, zips PMMA (acrylic/Perspex): cover of car rear light, bathroom fixtures, lenses 1 example AC2.2.1 1 1 1 Several of each 2 or 3 Several of each Several of each Several of each This could be set up once to be stored and used every year. Objects and photos of objects could be used for each example of polymer. 1 example 1 example 1 example // continued © in this format University of York (UYSEG) and Nuffield Foundation 2011 page 3 Polycarbonate: mobile phone cases, CDs, and DVDs, camera body, lenses Polyester: bottles for carbonated drinks Polythene: carrier bags, food bags Polypropylene: suitcases, car dashboards, bottle tops, crisp and sweet bags, casing for some electric kettles Rubber: rubber gloves, tyres 1 example AC2.3.1 Range of objects made from different polymers, e.g. rope (nylon), plastic bag (polythene), clothing (PVC, polyester), polystyrene (cassette/CD case), electrical insulation (PVC) Strings from a musical instrument, nylon fishing line, sewing threads made of different materials. Samples of plastic film cut from bags and packaging material. Packaging material from sweets, crisps and other foods. Flat style clothes hangers, CD cases, plastic rules. Several samples of each AC2.3.2 Samples of various types of thin sewing thread 1 reel of each type AC2.6.1 Propan-2-ol, or other anhydrous alcohol eg ethanol Polyox [high molecular weight poly(ethylene oxide), relative molecular mass about 4 x 106] Food colouring or fluoroscein (optional) String of ‘Christmas beads’ – shiny beads for decorating Christmas trees (optional) 40 cm3 AC2.6.2 AC2.7.1 Molecular model kits Paperclips, 2 colours 1 example 1 example 1 example 1 example 3–4g Polyox is available from MUTR or Aldrich. One of the strings of ‘Christmas beads’ should be cut into individual beads. Few cm3 2 10 of each colour per group Hexane-1-6-diamine Decanedioyl chloride Cyclohexane 50 % aqueous ethanol 4.4 g 3g 100 cm3 20 cm3 Butane gas (in a cylinder for a gas lighter) Paraffin (fuel) Candle wax and polythene 1 Exact quantities of chemicals will depend on the number of groups – each pair needs about 5 cm3 of each solution. If a demonstration is used instead of a class practical, smaller quantities of chemicals are needed. 1 1 © in this format University of York (UYSEG) and Nuffield Foundation 2011 page 4 AC2.7.2 Reaction vessel: a large, round plastic bottle, as used in workplace water dispensers. Ethanol, or propan-1-ol, or propan-2-ol Methanol 1 AC2.8.1 Plastic medicine spoon, 5 cm3 Borax (sodium borate) PVA glue Glycerol Fluoroscein dye or food colouring (optional) 1 per group 0.8 g per group 40 cm3 per group 5 cm3 per group Few cm3 AC2.8.2 Natural rubber latex Vinegar, or citric acid solution, or lemon juice About 50 cm3 About 50 cm3 AC2.9.1 Candle wax, polythene, high density polyethylene (HDPE): supermarket carrier bags (rustle when you crush them), low density polyethylene (LDPE): department store carrier bags (the softer kind), unvulcanized rubber: a film made by coating a microscope slide with Copydex adhesive and allowing it to dry, vulcanised rubber: brown elastic band, plasticized PVC: a squeezy toy, wire and cable insulation, watch strap Several samples of each AC2.9.2 Large bars of chocolate 2 AC2.10.1 Crude oil substitute Molecular model kit Large transparent bowl, bucket or beaker 40cm3 40cm3 About 6 cm3 1 1 AC2.11.1 Powdered milk 1 container 1 cm x 1 cm x 1 cm solid cubes 8 AC2.11.2 Jelly cubes 2 per pair AC2.12.1 Large coffee tin (500 g catering size) with metal lid Candle (short piece or tealight) Conflour, dry 1 1 Few g per demonstration © in this format University of York (UYSEG) and Nuffield Foundation 2011 The reaction vessel must have a volume of 16 – 20 dm3. It must be made of polycarbonate (marked PC) and of no other material. It must be completely dry before use. If rubber latex cannot be found, Copydex can be used instead. Prior to the lesson, one bar of chocolate is melted while in its wrapper, cooled in the fridge, then returned to room temperature. The other bar is kept at room temperature. For crude oil substitute recipe see guidance sheet. Tesco’s own brand powdered milk works well, but not all brands are as effective for this demonstration The maths department may have a supply of solid cubes if the science department hasn’t. Prepare the apparatus as shown on the guidance sheet prior to the lesson. Dry conflour in an oven. page 5 Technicians’ advance planning sheet Module C3: Chemicals in our lives: Risks and benefits This table shows items which may need to be ordered or prepared in advance for this module. It does not list standard items, for example, test tubes, beakers, thermometers etc. Full details of the resources needed for each activity are given in the Requirements section of the Teacher & Technician notes published by OUP, which also include safety information for the activity. Activity Item(s) Quantity Notes AC3.1.1 Model Earth, made from a strong bar magnet (about 7 cm long) hidden centrally in a sphere of PlasticineTM of approximately 12 cm diameter, and supported by a plastic rod Magnaprobe, or a sewing machine needle magnetised and suspended on a piece of sewing thread. Used matchsticks 1 Toothpicks could be used instead of used matchsticks. 1 Approx. 8 1 per group of 8 students AC3.1.2 Climate Through Time posters AC3.2.1 Tray Dry sand Gravel and small pebbles (various sizes) Talcum powder, or a similar fine harmless powder Drinking straws, or the barrels of pens with the ink tubes removed 1 per group A mixture of sand, gravel, and talcum powder enough to about ½ fill each tray Food labels (possibly photocopied from packets) covering enough examples for students to estimate their total salt intake in one day Salt pot with table salt A wide selection Castor oil Ethanol Sodium hydroxide solution (5M) Sodium chloride About 5 cm3 5 cm3 10 cm3 AC3.4.1 AC3.5.1 The posters can be ordered free form the British Geological Survey. 1 per student 1 10 g © in this format University of York (UYSEG) and Nuffield Foundation 2011 page 6 AC3.5.2 AC3.6.1 AC3.7.1 Universal indicator paper and colour chart Hydrated sodium carbonate crystals Calcium hydroxide Dilute hydrochloric acid (2M) 1 book per group Concentrated sulfuric acid Sodium chloride Universal indicator paper Iron sulfide, or sodium sulfide Hydrochloric acid (5M) Sodium chlorate(I) solution (14%) Blue litmus paper 10 cm3 20 g 1 book Few g Electrolysis cell Sodium chloride solution (30 g/dm3) Universal indicator paper 1 per group 100 cm3 per group 1 container per group 1 container per group 1 container per group About 20 cm3 About 50 cm3 Few strips See guidance sheet for details of the electrolysis cell. Few strips per group © in this format University of York (UYSEG) and Nuffield Foundation 2011 page 7