Variables are things like temperature, pressure, time allowed for the reaction to take place, the states of the reactants (liquids, gases or solids) and concentrations of solutions.
Variable
An experimental variable is the factor being tested or manipulated in a scientific experiment. It is often the independent variable that researchers change to observe its effects on the dependent variable. By controlling the experimental variable, researchers can examine the relationship between different variables and draw conclusions.
You must have a control group, an experimental group, an experimental variable (also called the independent variable), and a response to be measured (also called the dependent variable). The experimental variable is applied only to the experimental group, so that any difference between the control group and experimental group is due only to the experimental variable. Both the control group and experimental group must have the same conditions, except for the experimental variable.
An example of a dependent variable is the test scores of students, which may change based on the amount of study time (the independent variable). A non-example would be the color of a car, as it does not change in response to other variables in an experimental context.
Scientists try to control for experimental bias.An experimental bias often goes unrecognized if the student does not carefully consider sources of potential biases.A desire for a specific outcome is an experimental bias.
The independent variable is the one variable that you change in your experiment
independent variable
The independent variable is the one variable that you change in your experiment
the experimental variable is like the independent variable, which is the only thing you can change in a science experiment, and the dependent variables are the things that stay the same.
the independent variable is changed, and the experimental value measure. So you control the independent variable and change it to measure the results
In a controlled experiment, the control variable remains constant while the experimental variable changes with each trial of the experiment.
In a controlled experiment, the control variable remains constant while the experimental variable changes with each trial of the experiment.