Question

what part of an experimetn that is manipulated and changed by the scientist? A. independent varaible B. dependent variable C. controlled variable

Answer 1

It's the controlled variable.

Answer 2

thanks because i was confused i thought it was either independent or controlled

Answer 3

can u help me with another one please

Answer 4

Yes, but first let's clear this one up. Also, it helps if you post what you think is the right answer. That way I can explain the confusing aspects of it.

The dependent variable is usually what you measure, it's the result. The independent variables are variables which also might affect the result. For example, if you're measuring the rate of a chemical reaction with different amounts of reactant, the control variable would be different amounts of reactant, an independent variable would be time and the dependent variable would be the product formed.

Clear?

Answer 5

what is reactant?

Answer 6

Chemicals which get changed to other chemicals in reactions. Sorry for the confusion, it is just an example.

Answer 7

Now I understanded

Answer 8

Cool. And the next question...

Answer 9

im writing the other one in the post becaz its longer

Answer 10

i hate to be the one to correct you BLUES, but the independent variables ARE controlled and manipulated by the researchers. Dependent variable is the response measured, and control variable are all other variables which must remain constant during the experiment.