Chemistry Practical Notes
Planning Section
Things You Need To Write
- Aim/Approach (Basically hypothesis)
- Variables: 1 independent, 1 dependent, and 3 constant -
Procedure (Should be about 4-5 steps, but not fixed)
- Result Analysis (Include any needed
calculations/formulas)
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Experimental Errors
Human Errors
- Reaction time, results in inaccuracy (for experiments
requiring things like stopwatches)
- Inconsistent stirring. Solve the problem by using a
magnetic stirrer
Experimental Errors
- Heat loss to surroundings. There are many different ways
something could lose heat, so it depends on the context
of the question
- Decomposition of reagents. This error usually only
appears if hydrogen peroxide (Decomposes when light
and heat is present) is involved. Solve by storing
hydrogen peroxide in a cool and dark place.
- Colour-related experiments (Hard to determine colour).
Solve by using pH probe/colour scale (For pH indicator)
