the chemistry of art
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8/10/2019 The Chemistry of Art
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HSC central resources Chemistry The chemistry of art
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2001
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(c) Describe the Bohr model of the atom, and identify ONE merit and ONE 5
limitation of the model.
(d) (i) Name a transition element. 1
(ii) Outline a first-hand investigation to demonstrate the colour changes of a 2
named transition element as it changes in oxidation state.
(iii) Describe a safety risk associated with the procedure outlined in part (ii), 3
and suggest a safe work practice to minimise the risk.
(e) With reference to TWO pigments, explain how the metallic components produce 7
colour.
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2002
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2003
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(c) Assess the usefulness of distinguishing tests for carbohydrates and metal ions 7
used in the school laboratory, compared with technology used by forensic
chemists in laboratories, for the same purposes.
(d) During your practical work you performed a first-hand investigation to identify
the range of solvents that may be used for chromatography to separate and
identify mixtures.
(i) Define the term chromatography. 1
(ii) Outline the procedure used in your investigation, and describe the results 3
obtained.
(iii) Describe precautions used to prevent contamination of forensic samples, 4and explain why they are needed.
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HSC central resources Chemistry The chemistry of art
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(e) You have performed a first-hand investigation to observe the flame colour of a
number of different cations.
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(i) Outline the procedure you used to identify the Sr2+ ion. 2
(ii) Identify a risk associated with this procedure. 1
(iii) Explain how the flame colour of the Sr
2+
ion relates to electron3
excitation and emission spectra.
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2009
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2010
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