Scientific terminology

Weaker flame Lower heat

Mass (g) Weight (g)Heating Burning

CuSO4·5H2O CuSO4·5H2O

Reference “solutions@ebeacon.com”  !!!

“Sufficient data”

• From now on, we must always include 5 repeats of the quantitative data.

• We will share results from each experiment so this is possible.

% uncertaintyAll masses from balance have +/- 0.0001 g

a. Mass of crucible = 3 gb. Mass of crucible + CuSO4·xH2O = 6 gc. Mass of crucible + CuSO4 = 5 g

Mass of CuSO4 = 2 g Mass of H2O = 1 g

Error

1. What is the source of error?2. What kind of error is it?3. How would it have affected your final

result/value/pattern?4. How could the error be removed or

improved?

Extension of the investigation

Suggest how we could further investigate this specific area of chemistry.