C2 OCR 21st Century Chemistry 0.0 / 5 ? ChemistryC2GCSEOCR Created by: ElnicholsonCreated on: 04-11-15 16:39 94685321710 Across 1. Cotton comes from the what? (6, 5) 6. Polymers can be made more crystalline to increase its melting point and what? (7) 7. Plastic has a low what? (7) 10. Under high pressure, many small molecules 'join hands' to form long chains called what? (8) Down 2. Nylon fibres have a tensile what? (8) 3. If the polymer chains are spread out the material will have a ___ density (3) 4. What is the branch of technology dealing with the making and use of nanoparticles? (14) 5. Wool comes from? (5) 8. Wood and paper are both made from what? (5) 9. Rigid PVC has replaced_______ for new window frames. (4)
Chemistry C7 Notes Completed + Highlighted (Excess) - OCR 21st Century, 2011 Specification 5.0 / 5 based on 1 rating Teacher recommended
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