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Uploaded by eswed37 on Mar 21, 2007
White, red, black, blue and green beads are connected by tiny pieces of chewed chewing gum to compose molecule models of the elements H, O, C, N, Cl and their compounds. These models can be quickly composed ("synthesis") and decomposed ("analysis").
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what the hell?
ScarFace9797 1 year ago
what the hell?
theidiotclick 2 years ago
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what the hell?
ScarFace9797 1 year ago
what the hell?
theidiotclick 2 years ago