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Questions and Answers
What did Henri Becquerel discover when he opened the case containing the photographic plate?
What did Henri Becquerel discover when he opened the case containing the photographic plate?
- No image at all
- An image of the desk drawer
- An image of the paper wrapping
- An image of the rock on the plate (correct)
Who named the phenomenon discovered by Henri Becquerel as 'radioactivity'?
Who named the phenomenon discovered by Henri Becquerel as 'radioactivity'?
- Henri Becquerel
- Another physicist colleague
- Marie Curie (correct)
- The phenomenon remained unnamed
How can radiation released by unstable isotopes be detected?
How can radiation released by unstable isotopes be detected?
- By placing a photographic film over samples containing the isotopes (correct)
- By using a Geiger counter
- By observing color changes in the samples
- By using a microscope
What technique allows researchers to use isotopes as tracers in chemical reactions?
What technique allows researchers to use isotopes as tracers in chemical reactions?
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What do algae and plants use as a raw material in photosynthesis?
What do algae and plants use as a raw material in photosynthesis?
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Which type of atoms tend to be chemically reactive?
Which type of atoms tend to be chemically reactive?
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What is the characteristic of atoms like hydrogen in terms of reactivity?
What is the characteristic of atoms like hydrogen in terms of reactivity?
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What is the stability status of atoms like neon and argon?
What is the stability status of atoms like neon and argon?
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What tendency do atoms like sodium exhibit in terms of electrons?
What tendency do atoms like sodium exhibit in terms of electrons?
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What is the typical behavior of atoms like chlorine regarding electrons?
What is the typical behavior of atoms like chlorine regarding electrons?
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