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Learners create a small explosion by collecting hydrogen and oxygen gas together and squeezing them into a flame.

1 cent - $1 per group Ages 14 - adult Under 5 minutes
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In this activity about the property of water (page 6 of the PDF), learners use a coin to demonstrate cohesion between water molecules, exploring the molecular forces that allow water molecules to "


1 cent - $1 per student Ages 8 - 14 10 to 30 minutes