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Berry pH Paper – Sick Science! #048
507
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12 years ago
Dry Ice Bubbling Acid – Sick Science! #006
573
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13 years ago
Red Cabbage Chemistry – Cool Science Experiment
602
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13 years ago
Goldenrod Color-Changing Paper – Halloween Science
479
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15 years ago
Valentines Day Science Fun
469
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15 years ago
