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- 1. Multiple Choice
What ws the first element to be formally discovered?
phosphorus
gold
silver
plutonium
- 2. Multiple Choice
How many groups did John Newlands divide the 56 elements in?
10
11
12
15
- 3. Multiple Choice
Who is considered to have started the development of the actual periodic table?
Hennig Brand
Robert Boyle
John Newlands
Dimitri Mendeleev
- 4. Multiple Choice
Who predicted the discovery of new elements in the actual periodic table?
Hennig Brand
Robert Boyle
John Newlands
Dimitri Mendeleev
- 5. Multiple Choice
French physicist Antoine Bequerel first discovered radioactivity. Rutherford named these three types of radiation...
alpha
beta
gamma
all the above
- 6. Multiple Choice
What did Marie and Pierre Curie work on?
radiation of uranium and thorium
radiation of carbon and hydrogen
radiation of oxygen and nitrogen
- 7. Multiple Choice
What radioactive element did the curies discover?
uranium and thorium
radium and polonium
plutonium
- 8. Multiple Choice
What did Sir William Ramsay and Lord Rayleigh discover?
Radioactive elements
Noble gases
- 9. Multiple Choice
English physicist J. J. Thomson first discovered electrons; small negatively charged particles in an atom.
True
False
- 10. Multiple Choice
´Glenn Seaborg identified lanthanides and actinides (atomic number >92), which are usually placed below the periodic table.
True
False
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