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the parts that you control
Constant
The variable that stays the same
All parts of a mixture have the same composition
A control is a duplicate setup of the experiment you are performing with everything identical except for the variable that you are testing. Or, it is how the experiment would happen naturally, without you doing anything. For example, if you are testing the effects of a certain medication on humans, you give half of the subjects the medication and the other half a placebo, which is a sugar pill that has no effect. The latter group is the "control group". Their purpose is to remove the psychological effect of taking the medication from the results of the experiment, so that the only variable remaining is the actual effects of the medication. Constants are things that are kept the same for all trials, like making sure that every subject is taking a pill (and that they believe it is the medication in question, ever if it is only a placebo)
The factors that are kept the same in an experiment are the constants.The factors that aren't kept the same in an experiment are the variables.
The constants in an experiment is any factor that remains the same and does not change. These things are kept the same throughout each trial of the experiment.
Factors that are kept the same in an experiment are called constants.
the control
control
control
constants.
Constants
The answer is the constant variables because they always stay the same.
The group that is not altered in an experiment is the control group, because all conditions are kept the same.
The parts of an experiment that stay the same.
factors in an experiment that are kept the same and not allowed to change or vary.