This preview shows pages 1–3. Sign up to view the full content.
MYE Practical Exam Mark Scheme Qn Skills assessed Marking scheme Mark Mark ref 1(a)(i) PDO Layout P1 Tabulates temperature and volume of FA 2 added in the table. Table has correct headers and units. 1 1 PDO Record P2 All the volumes are recorded to the nearest 0.05 cm3and temperature to 0.1 °C 1 2 (a)(ii) PDO Layout P3 Axes correct way round + correct labels + units + scale. Sensible linear scale must be chosen so that the plotted points occupy at least half the graph grid in both x and y directions. 1 3 PDO Layout P4 All points correctly plotted to within ±1/2 small square. Checks all points and put ticks if correct. 1 4 PDO Mani P5 Graph line must be best fit-lines. Lines should be extrapolated until they cross. Do not allow mark if clearly anomalous points are included or it the lines do not cross each other 1 5 (a)(iii) PDO Mani P6 Correct reading to within ±1/2 small square of Tmaximum. Correct calculation of ∆Tmaximum. Correct reading of Vequivalence. 1 6 MMO Quality M1 M2 Award MR 7 based on the difference, ΔTmaximum, between student’s and supervisor’s ΔTmaximum value. Give 1 mark if this difference is ≤ 0.3 °CAward MR 8 based on the difference, Vequivalence, between student’s and supervisor’s Vequivalence value. Give 1 mark if this difference is ≤ 0.75 cm3Shift 1: Jessie 10.75 cm3 and 5.1 °C, Kelly 10.40 cm3and 4.88 °C Shift 2: Joseph 10.33 cm3and 5.3 °C, Russell 10.00 cm3and 5.7 °C (Physics) Shift 3: Jessie 12.40 cm3and 4.85 °C (Biology), Russell 12.00 cm3and 6.7 °C (Physics) 1 1 7 8
This preview
has intentionally blurred sections.
Sign up to view the full version.