Chemistry: Elements, Compounds, and Mixtures (2nd Edition) (1983) is a 20-minute educational film from the *Chemistry Series* ...

Earth and Mars are mysteriously low in elements like copper and zinc, which are crucial for planetary chemistry and potentially life. A new study overturns old theories by showing that these elements ...

Interactive and printable revision flashcards. Prepare for your GCSE exams revising topics such as atoms, elements, compounds, atomic structure and Mendeleev's periodic table. FLASHCARDS ...

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