Question

What are the controlled variables for water of crystallization experiment?

Answer 1

Given what we know, we can confirm that as with any experiment, the control variable will be the one that through each trial of the experiment, no matter how many times it is performed, stays constant.

What is a controlled variable?

• A variable that remains constant through an experiment.
• They are used to compare results to the normal condition.
• They are also used to isolate the changes to one factor at a time and thus know its exact effects on the outcome.
• This increases the accuracy of the data and the subsequent conclusion.

Therefore, we can confirm that if a variable stays constant through each phase and trial of an experiment, it is considered to be a controlled variable and is useful in order to increase the accuracy of the conclusion.

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