Question

In an experiment, a student wants to know the boiling point of a solution of sugar water. The student first measures the boiling point of 100 mL pure distilled water. Then she measures the boiling point of 100 mL of pure distilled water plus 10 grams of sugar. The student uses a Bunsen burner to heat both solutions. Which is the experimental variable?

Answer 1

Adding the 10 grams of sugar to the boiling water.

Answer 2

Answer:

10 grams of sugar is an experimental variable

Explanation:

An experiment variable is a factor whose quantity , quality or type is changed to measure the consecutive effect produced by it on the subject of the experiment.

Here the subject is boiling point of distilled water. Addition of sugar (weighing 10 grams) is an experiment variable as the effect will be produced by its addition, removal or variation.

Hence, 10 grams of sugar is an experimental variable