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  2. Chemistry 101: Intro To Chem - Chemistry Practice Tests

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    • Chemistry

      Live Science via Yahoo News· 11 months ago

      Chemistry is the study of matter and what happens when elements and compounds interact with other matter around them. It is a vast but fascinating field of science, and by bringing you the most ...

    • Why are rare earth elements so rare?

      Why are rare earth elements so rare?

      Live Science via Yahoo News· 8 months ago

      A silver-colored raw chunk of neodymium stone, part of the rare earth group, the world's strongest magnetic ore used in the technology industry. Rare...

    • On this date: aluminum becomes cheap

      On this date: aluminum becomes cheap

      WHTM via Yahoo News· 3 months ago

      (WHTM) — It’s one of the most common elements on Earth, making up 8.1 percent of the planet’s crust, but it didn’t even have a name until 1807. For...