Valentine's Day Activity

Description

Bring the magic of Valentine's Day into your science classroom with three heart-themed mini-experiments in one worksheet! Students float dry-erase marker hearts on water, race Skittles diffusion in warm vs. cold water, and reveal invisible lemon-juice love notes with a candle flame. It's part holiday celebration, part rigorous inquiry — students predict, observe, compare, and explain the science behind each colorful moment. What's inside: 8 pages that cover multiple Chemistry concepts: diffusion, solubility, scientific method and reflection. Key student takeaways: Explain why some substances (like dry-erase marker ink) are insoluble in water and float Define diffusion and identify temperature as a factor that changes its rate Distinguish physical from chemical changes using observable evidence (the browning of heated lemon juice) Practice fair-test thinking — controlled variables, independent variables, and why "keeping things the same" matters Build the science-communication skills of predicting BEFORE observing, then revising ideas with evidence Connect science vocabulary (insoluble, diffusion, chemical change, rate of reaction) to hands-on experiences