I am doing a experiment. In which i am boiling a chicken bouillon in water. I am placing them on 3 petri dishes. After that, in one i am placing vinegar ( in order to act as a preservative) . In another i am placing salt (act as another preservative) and the last petri dish i am not placing any thing. What would be the independent, the dependent, the control. and the constant ? Please help me. I want to make sure of my answers. Thank you :)What variable is it , independent, dependent , control, or constants?
independent variable = the variables you introduce ie vinegar,salt...
dependent variable= the variable you are measuring ie how long the boullion lasts or how many colonies of bacteria or whatever.
control = not placing anything ( to see the difference between introducing a variable, and a ';natural'; situation.
the website below is good info
constant = the thing you measure against ie bacteria colonies per day means day is the constant.
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