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Invisible Sunblock
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In this activity, learners find out why some mineral sunblock rubs in clear. Learners compare nano and non-nano sunblocks and discover how particle size affects visibility.
Exploring the Nanoworld with LEGO Bricks: Structure-Property Relationships at the Nanoscale
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In this activity (pages 32-41), learners learn how the atomic and molecular arrangement of matter are related to physical properties.