Question

leah, larocca, and cobi decide to test what factors influence water absorption by an egg. they measure the shell mass 3 eggs by dissolving them in vinegar. they create three different water solutions. one is pure, 100% distilled water, a second is 50% water/50% corn syrup, and the third is 100% corn syrup. the mass of each egg is measured before they are put into their solution for 24 hours. the mass of the eggs is then measured, and the data recorded below.

in this experiment, the independent variable they are testing is

the amount of time they were in the solution

the type of solution the egg is placed in

change in the mass of the egg

the ending mass of the egg

Explanation:

Step1: Understand independent variable

In an experiment, the independent variable is what is changed. Here, different solutions (distilled water, 50 - 50 mixture, 100% corn syrup) are used.

Step2: Check options

Option a: The type of solution the egg is placed in is the independent variable as it is manipulated. Option b: The amount of time is not mentioned as varying. Option c: The change in mass is the dependent variable. Option d: The ending mass is also a result (dependent variable).

Answer:

a. the type of solution the egg is placed in