Chemistry, 04.08.2021 14:00, Tnaaasty8812

What was one important discovery that the Curies made? O A material's radioactivity cannot be changed by altering the material physically
O A material's radioactivity can be weakened or intensified by changing it chemically.
O Radioactive materials generally contain radium or polonium.
O Radioactive materials are found only in the form of salts.

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What was one important discovery that the Curies made? O A material's radioactivity cannot be chang...