"Voice" refers to the way the verb is used in the sentence. Remember that a sentence has to have a subject and a verb, and many verbs require direct objects. Below are two examples one of a passive voice and the other of an active voice.
Here is an example of an active voice:
In passive voice, the subject of the sentence also receives the action. The doer of the action is someone else. Here’s an example of passive voice:
We write lab reports in passive voice because:
It’s part of the scientific point of view. We observe and record as objectively as possible, avoiding personal bias by removing ourselves. Using the passive voice also clarifies procedures and descriptions so they can be easily reproduced and compared.
NOTE: DO NOT write reports as directions, such as those given in your lab manual. For example, do not write, "Heat the solution until it boils." Instead, write "The solution was heated to boiling."
Examples of a passive voice in lab reports
200mL of distilled water was poured into a 500 mL beaker.
I poured 200mL of distilled water in a beaker. (active voice)
Pour 200mL water in a beaker. (direction/command)
The covered crucible was mounted on a ring stand.
We put the crucible on a ring stand. (active voice)
Set the crucible on a ring stand. (direction/command)
The temperature was initially measured at 75°C.
I measured the temperature at 75°C. (active voice)
Measure and write down the temperature. (direction/command)
It's understood that all actions were done by the experimenter.
Whether you are filling out lab worksheets or writing up entire lab reports, there are a few tips that will help you to create more detailed and professional documents and to assist in grading: