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    Mensa Education & Research Foundation
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    In this activity on page 3 of the PDF, learners discover how science and Halloween are fun companions as they make paper bleed. Learners use an ammonia solution to make a "bloody"...

    $10 - $20 per group Ages 6 - 14 5 to 10 minutes
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    Oregon Museum of Science and Industry
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    Learners mix a solution containing luminol and copper with a fake blood solution. A chemical reaction between the luminol solution and fake blood (hydrogen peroxide) show learners a blue glow....

    $1 - $5 per group Ages 11 - adult 5 to 10 minutes