Quantitative Pigment Release Experiment

Science

Design Challenge

Students will explore the practical applications of scientific theories such as Atomic Theory as well as the Kinetic Molecular Theory through an activity that follows scientific methods.

Concepts at a Glance

Curriculum Connections

Grade 8: Science.

· The behavior of matter can be explained by the Kinetic Molecular Theory & Atomic Theory. (What are some practicalapplications of Kinetic Molecular Theory: What is the relationship between the atomic theory and kinetic molecular theory?).

Grade 9: Science

· The electron arrangement of atoms impacts their chemical nature.

Grade 11: Chemistry

· Atoms and molecules are building blocks of matter.

Grade 11: Environmental Science.

· Human practices affect the sustainability of ecosystems.

Grade 12: Chemistry

· Reactants must collide to react, and the reaction rate is dependent on surrounding conditions.

Grade 12: Environmental Science.

Living sustainably supports the well-being of self, community, and Earth.

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Materials

For Introductory Activity:

1. A clear container with a lid (e.g., a clear plastic bottle)‍

2. A small amount of water.

3. A few drops of food coloring (a contrasting color to the water)

For Quantitative Pigment Release Experiment.

1. Transparent long plastic cups (one for each vegetable)

2. Pigment Release Experiment: Prediction Worksheet.

3. Water

4. Spinach leaves

5. Kale leaves

6. Blueberries

7. Beetroot slices

8. Red Cabbage

9. Visual color estimation scale (1-10)

10. Timer or stopwatch.

For Water Filtration System.

1. For Filtration medium: Gravel or pebbles/ cotton balls or fabric/coffee filters/ sand/activated charcoal.

2. Plastic bottles, cups, buckets.

3. Rubber bands, scissors, tapes.

4. Hand gloves, soap, sanitizers, apron/lab coat.

Activity Instructions

By the end of this lesson, the learner will be able to:

Engaged and set the stage for understanding the Kinetic Molecular Theory and Atomic Theory in the context of pigment release and diffusion.

Apply Scientific Method to investigate and compare the release of pigments from spinach, kale, blueberries, beetroot, and red cabbage into water over time while exploring the principles of diffusion and Kinetic Molecular Theory and, to compare the rate of pigment diffusion in water.

Apply the principles of molecular interactions based on the Kinetic Molecular Theory and Atomic Theory to design and create an effective water filtration system.

Worksheets

Quantitative Pigment Release Experiment Additional Document

Lesson Plan

Download Lesson Plan