prac write up (1 Viewer)

[abu-mahmoud]

hi all,

can any one help me with a proper hsc chemistry write up for any experiement that includes validity, hazards etc all dat stuff

and

if any one has an example to show me plz

thanks all

 

[alcalder]

Hi there. What sort of help specifically are you looking for?

Risk analysis - you could do a dot pot thing. Identify a hazard and state how you can address it in your experiment.

Validity - you would be minimising error and taking multiple readings to ensure you are discounting anomalous readings.

I don't have an example I can send you, unfortunately. Sorry.

Hope this helps. If not, ask for more.

 

[abu-mahmoud]

wat about reliableility

thanks

 

[kazan]

reliability is the ability to preform the same expiriment many times and get the same result, to do that u have to minimize the amount of factors that can affect the expiriment


eg other elements, tempreature, pressure, wind, sun, etc

 

[abu-mahmoud]

hi kazan,

do u have an example that u could show me (hcl and magnesium prack if u have)

thanks

 

[kazan]

a good example (even tho its from the shipwrecks unit) is the rate of electrolysis of differnt metals

if you change the size, and distance between the electrodes, the experiment is no longer reliable, becuase the factor you are researching can be effected by, the distance between electrodes, the size of electrodes the electrolyte used etc.