DP Chemistry Questionbank

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• 18M.3.sl.TZ2.5a: State the source of carbon for MWCNT produced by arc discharge and by CVD.
• 18M.3.sl.TZ1.3b.iii: Describe how carbon nanotubes are produced by chemical vapour deposition (CVD).
• 18M.3.sl.TZ1.3b.ii: State one physical property of HDPE that will be affected by the incorporation of carbon nanotubes.
• 17N.3.sl.TZ0.6c: Discuss one possible risk associated with the use of nanotechnology.
• 17N.3.sl.TZ0.6b: Outline why the iron nanoparticle catalysts produced by the HIPCO process are more efficient than...
• 17N.3.sl.TZ0.6a: State equations for the formation of iron nanoparticles and carbon atoms from Fe(CO)5 in the...
• 17M.3.sl.TZ1.8b: Suggest why nanoparticles need to be handled with care.
• 17M.3.sl.TZ1.8a: State the major advantage that nanoparticles have in these applications.
• 16N.3.sl.TZ0.5b: Nanocatalysts play an essential role in the manufacture of industrial chemicals. (i) Describe...
• 16M.3.sl.TZ0.4c: Carbon nanotubes, which can be produced by the HIPCO process, show great potential as...
• 16M.3.sl.TZ0.4a: Identify one concern of using nanoscale catalysts.
• 15M.3.sl.TZ1.9a: Outline the technique used to manipulate the atoms in this way.
• 15M.3.sl.TZ1.9b: The atomic radius of xenon is \(1.36 \times {10^{ - 10}}{\text{ m}}\). Estimate the approximate...
• 15M.3.sl.TZ2.13d: Discuss two concerns regarding the development of nanotechnology.
• 15M.3.sl.TZ2.13b: Distinguish between the arrangement of carbon atoms at the sides and at the ends of carbon...
• 15M.3.sl.TZ2.13c: Outline why bundles of carbon nanotubes have high tensile strength.
• 14N.3.sl.TZ0.12b: Discuss two concerns about its development and use.
• 14N.3.sl.TZ0.12a: Define the term nanotechnology.
• 13N.3.sl.TZ0.9c.i: Outline the structure of the open carbon nanotubes.
• 13N.3.sl.TZ0.9c.ii: State a property of these nanotubes that makes them suitable for this use.
• 10N.3.sl.TZ0.C3a: Define the term nanotechnology, and state why it is of interest to chemists.
• 10N.3.sl.TZ0.C3b: (i)     Describe the structure of carbon nanotubes. (ii)     State one physical property of...
• 10N.3.sl.TZ0.C3c: Suggest two concerns about the use of nanotechnology.
• 09N.3.sl.TZ0.C3a: Describe these ‘test-tubes’ with reference to the structures of carbon allotropes.
• 09N.3.sl.TZ0.C3b: These tubes are believed to be stronger than steel. Explain the strength of these ‘test-tubes’ on...
• 09N.3.sl.TZ0.C3c.ii: State one potential concern associated with the use of carbon nanotubes.
• 10M.3.sl.TZ2.C1a: State the size range of structures which are involved in nanotechnology.
• 10M.3.sl.TZ2.C1c: Discuss two implications of nanotechnology.
• 09M.3.sl.TZ1.C1b: After the discovery of \({{\text{C}}_{60}}\), chemists discovered carbon nanotubes. Describe the...
• 09M.3.sl.TZ1.C1c: Nanotechnology could provide new solutions for developing countries where basic services such as...
• 11M.3.sl.TZ1.C1a.i: State the scale at which nanotechnology takes place and outline the importance of working at this...
• 11M.3.sl.TZ1.C1a.ii: State one public concern regarding the development of nanotechnology.
• 11M.3.sl.TZ1.C1b: One development has been the production of nanotubes. Describe the way in which the arrangement...