In my iodine clock reaction lab, there is a question that asks: What other variables, apart from initial bisulfite ions concentration, were controlled in this investigation?
What does the question mean by controlled variables?
2006-12-29 17:19:30 · 4 answers · asked by S 3 in Science & Mathematics ➔ Chemistry
Control variables are those variables that are not changed throughout the trials in an experiment because the experimenter is not interested in the effect of that variable being changed for that particular experiment. (In other words, control variables are extraneous factors, possibly affecting the experiment, that are kept constant so as to minimize their effects on the outcome.)
In a scientific experiment, the controlled variable never changes; it is the same for every setup.
A possible answer is temperature, pressure, and volume.
2006-12-29 17:26:24 · answer #1 · answered by Esse Est Percipi 4 · 0⤊ 0⤋
Think what was kept the same during the course of the experiment.
To be a controlled variable, the variable must be measured and regulated (using a temperature bath) or negated (sparging a solution with nitrogen to remove dissolved carbon dioxide).
Ken
2006-12-29 17:45:19 · answer #2 · answered by Ken B 3 · 0⤊ 0⤋
controlled variables are things you kept the same throughout your experiment, such as the amount of time tested on each experiment.
2006-12-29 17:23:39 · answer #3 · answered by jake 5 · 0⤊ 0⤋
controlled variables are the treatment that u maniuplate in an experiment
2006-12-29 17:24:46 · answer #4 · answered by Travis 4 · 0⤊ 0⤋