Scientists want to determine whether chemical X, a component of fertilizer, is harmful to fish. They treat fish in the laboratory with increasing amounts of the chemical for one week and then measure their viability. What is the experimental variable for this experiment?
A) chemical X
B) fish
C) river
D) farming
E) water

Question

Scientists want to determine whether chemical X, a component of fertilizer, is harmful to fish. They treat fish in the laboratory with increasing amounts of the chemical for one week and then measure their viability. What is the experimental variable for this experiment?
A) chemical X
B) fish
C) river
D) farming
E) water

Quizplus · Accepted Answer

The experimental variable, also known as the independent variable, is the condition that is changed by the scientists to observe its effects, which in this case is chemical X.

Scientists Want to Determine Whether Chemical X, a Component of Fertilizer