Page 218 - Q&A-Cover_Neat

Guidance Do not accept to make it accurate / to make it reliable / to make it precise Accept ‘measurement’ or ‘answer’ for Do not accept to make the results Accept as water gets hotter it dissolves when the temperature of water was 10°C only 27 (kg/g) dissolved but when the temperature is 60°C the mass of dissolved salt increased = 2 marks More than one answer circled = 0 marks Accept any indication of the correct

Do not accept G / gr results e.g. to make sure the measurements are correct accurate / for a fair test If answer is ‘no’ = 0 marks more salt e.g. (yes) answer

1 1 1 2 1
Marks

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Answer so he can check the results / so results can be evaluated / to increase reliability (yes) because as the temperature goes up so does the mass use of any correct data to support the trend e.g. at 10 °C, 27 (kg/g) dissolved and a pie chart a bar chart a line graph a labelled diagram

g / gram(s) / kg / kilogram(s) idea of a fair test at 60 °C, 37 (kg/g) dissolved

Question 16(a)

16(b) 16(c) 16(d) 16(e)