Q: The weighing scale we have from WESO/school equipment is not consistent in readings, has variable readings with errors. How much error is acceptable and how will this be graded? I am concerned with the conservation of mass experiments if the ingredients are in small quantities, and the measurements don’t line up well.
A: The experiment will be designed to work with some variability in measurement readings.
Q: For chromatography will pencils and clips be provided to clip the filter paper and suspend it?
A: We will provide all materials needed for the experiments and chromatography.
Q: For chromatography will there be any other chemical solvents used other than water? Would students need to identify things other than ink? For example: a leaf/flowers crushed create a pigment and chromatography, or lipsticks.
A: Only ink and water chromatography will be tested on the exam, as per the study guide and linked examples.
