【實用教育app】TOM: elements and compounds|最夯免費app

Select samples from an outdoor setting. Magnify the substances to atomic level so that the particles they consist of can be seen. Sort the substances into groups based on how the particles are arranged. Classify the substances as elements or compounds. For example, classify mercury as an element, and aspirin as a compound. This learning object is the third in a series of six objects that progressively increase in difficulty.

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