2003 Chemistry Higher Finalised Marking Instructions - eduBuzz

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Mark Scheme Worth ½ Worth 0 light or does not burn 2. (a) Strong or rigid or durable or tough or hard or hard to puncture 1 amino group or amine group polyamide or polypeptide (b) amide link or peptide link 1 (2) Page 6
Mark Scheme Worth ½ Worth 0 3. (a) plotting points correctly and joining with a line 1 points not joined or one point not plotted correctly or points joined by straight line numbers on rhs any wrong subscript or superscript 206 Pb + He (or α) 210 Po (b) or 206 Pb 1 α 210 Po 6 x 10 23 in 1 mol (½) (c) 210 g contain 6 x 10 23 (atoms) 105 g contain ½ x 6 x 10 23 (atoms) (½) = 3 x 10 23 (3) Page 7
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2003 Chemistry Higher Finalised Marking Instructions - eduBuzz

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