Scientifc Language: Verbs

In the procedure, you need to use the PAST tense and the PASSIVE VOICE.

You should use the PAST tense as you are describing how you carried out the experiment at a time in the past. You should focus on the things you used in your experiment and what you did with them not on yourself. The experimental procedure should be independent of the person conducting it. This type of focus requires a special structure of the verb which we call the PASSIVE VOICE.

Active
What you did
I added hydrochloric acid (10 molL-1, 50 mL) to a warmed mixture of tin (25.0 g) and nitrobenzene (13.0 g) over 30 min.
Passive
What was done by you
Hydrochloric acid (10 molL-1, 50 mL) was added to a warmed mixture of tin (25.0 g) and nitrobenzene (13.0 g) over 30 min
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