Ms. Whitaker’s 11th grade CP Chemistry students explored the scientific method through a hands-on lab experiment focused on liquid density.
In this engaging activity, students worked in small groups to determine which color layer was the most dense by creating a colorful density column in a test tube. Before diving into the experiment, they followed the scientific method step-by-step:
Writing their purpose
Conducting background research
Forming a hypothesis
Performing the experiment using varying amounts of saltwater
Using pipettes, students carefully layered colored saltwater solutions - aiming for clear, distinct layers of yellow at the bottom, green in the middle, and red on top.
Along the way, students discovered that not only did salt concentration affect density, but technique mattered too - the angle and pressure of the pipette drop made a big difference in whether layers stayed separated or mixed together.
This experiment helped students visualize abstract scientific concepts in a fun, interactive way while building important skills like observation, critical thinking, and lab safety.
Way to go, Vikings — science in action!