A laboratory procedure is a step by step process that highlights how to safely and correctly execute an experiment or actions in a laboratory environment. See the labelled processes below.
Which category does each of the procedures belong?
- The molecule size of the starch and glucose were all constant. (C)
- Material used as membrane was also constant. (C)
- The amount of substances used varied (V)
- The number of trials varied (V)
- The process of diffusion via the membrane is variable (V)
A variable factor is one that changes in relation to other factors during th experiment or laboratory process.
While those that are constant are those that must remain as they are in order to establish standards and control.
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