Discovery of New Elements and Superheavy Elements
Chemistry ⇒ Atomic Structure and the Periodic Table
Discovery of New Elements and Superheavy Elements starts at 11 and continues till grade 12.
QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Discovery of New Elements and Superheavy Elements.
How you perform is determined by your score and the time you take.
When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.
See sample questions for grade 11
Describe one challenge scientists face when naming new elements.
Describe the general trend in the stability of elements as atomic number increases beyond uranium.
Describe the role of particle accelerators in the discovery of new elements.
Explain the importance of international organizations like IUPAC in the naming of new elements.
Explain the significance of the 'island of stability' in the context of superheavy elements.
Explain why superheavy elements have very short half-lives.
Explain why the chemical properties of superheavy elements are often predicted rather than observed.
Explain why the discovery of new elements becomes more difficult as atomic number increases.
The discovery of new elements helps scientists to: (1) Understand nuclear forces (2) Expand the periodic table (3) Test theoretical models (4) All of the above
The term 'island of stability' refers to: (1) A group of stable isotopes of superheavy elements (2) A region in the periodic table where elements are all gases (3) A group of elements with similar chemical properties (4) A region where elements are all radioactive
Which element was named in honor of the city where it was discovered? (1) Dubnium (2) Nihonium (3) Moscovium (4) Seaborgium
Which element was the first to be synthesized by bombarding curium-242 with alpha particles? (1) Californium (2) Berkelium (3) Einsteinium (4) Fermium
Superheavy elements are generally defined as elements with atomic numbers greater than ________.
The element with atomic number 112 is called ________.
The element with atomic number 113 is called ________.
The element with atomic number 115 is called ________.
True or False: All elements with atomic numbers above 92 are synthetic.
True or False: All superheavy elements are found naturally on Earth.
True or False: Superheavy elements can have practical applications if their half-lives are long enough.
True or False: The chemical properties of superheavy elements are always well-known and predictable.
