Write up

[khalil]

I've got to write up a chemistry prac report on the amount of sulfate ions in fertiliser.
How do you write a prac report?

[dekoyl]

You've never wrote a prac report? :O
Well I've been sticking to the same structure since year seven.

Aim: What you hope to achieve by doing the experiment
Materials: Equipment, etc.
Method: The steps you took to carry out the experiment.
Results: The results to the experiment. Tables etc.
Discussion: Discuss your results. Why did your results come out as so?
Conclusion: What you found out from your experiment (in this case, the amount of sulfate ions in the fertiliser).

[Edmund]

Also don't forget to comment on Possible Experimental Errors and Its Effects and Improvements to Experimental Design

Also, keep Introduction and Conclusion short and straight to the point.

[Mao]

To write a good conclusion, you have to have two points, improvements and extension. In the first part, the general gist is to be more accurate by improving equipment, procedure (such as more repeats to get better average) and etc, the latter deals with what else you can do, such as using other chemicals, other procedures or different types of reaction to support the theoretical findings of this experiment. The prior one requires thorough knowledge of the details of the practical, the latter requires broad knowledge of the course.

Also, don't forget to include a safety section [in the same section with methods/procedures] that outline hazards and their controls.