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50:00 chem102-010-20170501-122001.mp4 chem102-010-20170501-122001.mp4	chem102-010-20170501-122001.mp4 UD Capture Recording chemical element non metals natural science chemical compound chem102 2017s science (general) iron (diet) materials chemicals natural resources iron carbon group non ferrous metal transition metals chemistry metals & minerals caption complete carbon compounds things aluminum metal oxygen silver copper atom atoms metals zinc compound point form oxide mercury picture From Dana Chatellier 0 likes 19 plays 0

50:00

chem102-010-20170501-122001.mp4

UD Capture Recording

From Dana Chatellier 0 likes 19 plays 0