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when refering to the controlled variable... a control for a chemistry lab or experiment refers to constant state of a variable, item, substance, pressure, etc. Nothing about the variable can change through out the entire experiment.
Wiki User
∙ 14y ago
Wiki User
∙ 15y agoA control is used in all scientific tests to prove the independent variable is the only acting change on the dependent variable.
Wiki User
∙ 12y agoWhen all the other variables apart from the one you're changing are controlled.
Wiki User
∙ 8y agoThis is a solution with known concentration of an element, compound, having a certified measured property.
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oven
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chemistry
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