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