When it comes to writing a good scientific method, there are 3 things you must make sure you do.
- Ensure that it is clear – with only 1 step in each number
- Ensure that you use 3rd person
- Ensure that you use past tense
The following example is a typical example of a scientific method produced by students. However, it violates the past tense requirement (most common flaw)
- Place some of the distilled water into a 150mL beaker so that the nichrome loop can be completely submerged.
- Place some of the hydrochloric acid into a 150mL beaker so that the nichrome loop can be completely submerged.
- Clean the nichrome loop by placing it into the distilled water first, then into the hydrochloric acid.
- Light the Bunsen burner and turn it to the blue flame.
- Place the nichrome loop into the flame. When the flame returns to its normal blue colour, the nichrome loop is clean.
- Place the nichrome loop into the solid copper sulfate and then place it into the blue Bunsen flame.
- Record the colour of the flame.
- Repeat steps 3–7 for each of the solid chemicals.
I have rewritten it:
Part 1: Cleaning the loop
- A nichrome loop was dipped into distilled water such that it was fully submerged
- The nichrome loop from above was then dipped into HCl until it was fully submerged
- A bunsen was lit and turned to the blue flame
- The loop was placed into the flame
- The colour of the flame was observed. When the flame returned to it’s normal blue colour, the nichrome loop was considered clean
Part 2: Testing substances
- The nichrome loop was fully submerged into solid copper sulphate
- The nichrome loop was placed into the bunsen flame again
- The colour of the flame was recorded
- Repeat steps 1-8 for each of CuSO4, BaSO4, CaSO4