[marijaandic]

For a chemistry lab we did on different types of chemical reactions (ie. synthesis, decomposition, double displacement, etc) we had to find sources of error
However our teacher told us to find sources of error, assuming that we did everything right (measurements, etc). The source of error has to be beyond human control

Does anyone know a source of error?
I'm thinking concentration of the solution but I'm not sure 

[marijaandic]

wow.. thanks for the quick response .

[billnotgatez]

GOOGLE experimental error

http://www.rod.beavon.clara.net/err_exp.htm
http://www.rod.beavon.clara.net/err_orig.htm

GOOGLE is can be very fast and your friend