Experiment Variables

[Kekemato_BAP]

Could someone explain independent/dependant variables and control? Also accuracy, relaibility, and validity?
i still don't understand it. Thanks

[RuiAce]

There is already an article regarding the three main discussion points.

The difference between a control and a variable is that a control is something you take as the standard, and is fixed. You don't do anything with it. A variable is something that is adjusted, because your experiment always involves something that you need to change and not the exact same thing being done over and over again.

An independent variable is something that you change (e.g. in the heat of alkanols experiment, the actual alkanol you use). A dependent variable is something that gets affected as a CONSEQUENCE of the independent variable being changed (e.g. in the above, it would be your calculations; the heat of combustion).