Từ điển

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• atom

  danh từ·A2

  Nói thử

  nguyên tử

  the smallest particle of a substance that can exist by itself or be combined with other atoms to form a molecule

  carbon atoms

• atomic

  tính từ·B1

  Nói thử

  nguyên tử

  of or relating to atoms

  atomic physics/particles

• copper

  UK/ˈkɒpə/US/ˈkɑpɚ/

  danh từ·B2

  Nói thử

  đồng

  a metallic chemical element with atomic number 29 that is easily formed into sheets and wires and is one of the best known conductors of heat and electricity —often used before another noun

  The wires are (made of) copper.

• compound

  danh từ·B1

  Nói thử

  hợp chất

  something that is formed by combining two or more parts; especially, technical : a substance created when the atoms of two or more chemical elements join together

  chemical/organic compounds