S.O.O.N. Ch.4 "Discovery"

The two elements the Curies discovered were ___ and ___

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NGSS.HS-PS1-8

Pitchblende was a black-brown mineral that contained...

• uranium

• potassium

• chlorine

• neon

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NGSS.HS-PS1-8

Why did Marie focus on pitchblende?

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The Curies found ____ of radium in the several tons of pitchblende.

• a lot

• very little

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NGSS.HS-PS1-8

What is a half-life of a radioactive element?

• the amount of time it takes for one half of the atoms of a material to decay into atoms of a different element

• when the element is cut in half

• the amount of time an element takes to disappear completely

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NGSS.HS-PS1-8

After discovering radium's ability to destroy skin tissue, it was used to treat cancer.

• True

• False

In 1903 Marie earned her doctorate. She was the first __ in France to do so.

Both Marie and Pierre were starting to show signs of exhaustion and poor health. Why do you think this was?

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