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In this demonstration, learners compare the relative sizes and masses of scale models of the planets as represented by fruits and other foods.

Learners use red cabbage juice and pH indicator paper to test the acidity and basicity of household materials. The activity links this concept of acids and bases to acid rain and other pollutants.

Learners explore water adhesion and learn about why water molecules are more strongly attracted to some substances than others.

Water treatment on a large scale enables the supply of clean drinking water to communities.