Questions and Answers
- 1.The earliest elements were the ancient metals, which are metallic elements with relatively low melting points. Which of the following is an element?
- A.
Pewter
- B.
Steel
- C.
Gold
- D.
Brass
- 2.What was likely the first qualitative device that was used to isolate some of the ancient elements
- A.
The particle accelerator
- B.
The bow and arrow
- C.
The Adze
- D.
Fire
- 3.Which two instruments played a large role in the development of the periodic table, leading to about 70 elements discovered by 1870?
- A.
The double pan balance and the battery
- B.
The mass spectrometer and the refractometer
- C.
The barometer and the clay oven
- D.
The bugle and the fife
- 4.How did the particle accelerator make possible the discovery of new elements?
- A.
By purifying known element readily by separating them based on their characteristic velocities
- B.
By creating new elements by colliding known elements
- C.
By removing unwanted particles in an impure element based on centrifugal force
- D.
By separating compounds into individual ions by accelerating to near the speed of light.
- 5.Who was one of the first to observe a periodic pattern to the elements
- A.
Volta
- B.
Newlands
- C.
Mendeleev
- D.
Seaborg
- 6.Who created a periodic table accurate enough to predict the properties of unknown new elements?
- A.
Lavoisier
- B.
Newlands
- C.
Mendelleev
- D.
Tony Stark
- 7.Which elements did Mendeleev predict?
- A.
Ga Ge and Sc
- B.
Gold, germaniam, and sulfur
- C.
Germanium, Americium, and Francium
- D.
Scandium, germanium, and galenium
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