Question

Tallie wanted to see how many Mentos it would take to make her 2-Liter of Diet Coke explode. If she changes the amount of Mentos, what does she need to keep CONSTANT in her experiment?

a) Volume of Diet Coke
b) Type of Diet Coke
c) Container Size
d) Temperature of Diet Coke

Answer 1

Tallie must keep the volume of Diet Coke, the type of Diet Coke, the container size, and the temperature of the Diet Coke constant to ensure that changes in the explosion are due to the variable she is testing: the number of Mentos.

Step-by-step explanation:

To ensure the accuracy of her experiment, Tallie needs to control several variables while changing the amount of Mentos. The variables she needs to keep constant are: a) Volume of Diet Coke, b) Type of Diet Coke, c) Container Size, and d) Temperature of Diet Coke. By controlling these variables, Tallie can be certain that any changes in the explosion are due to the number of Mentos added and not to other factors. In scientific experiments like these, it’s important to have a controlled environment to precisely measure the effect of the variable being tested, in this case, the amount of Mentos.