WorksheetsPhysical Science - Module 1 - Pre-Assessment
Total questions: 10
Worksheet time: 8mins
Which of the following best describes Big Bang Nucleosynthesis?
the unending expansion of the universe
the birth of elementary particles in the beginning of time
a hot plasma in which energy is distributed evenly all throughout
the formation of atomic nuclei through the combination of sub-atomic particles during the Big Bang
Which of the following is a light element?
carbon
helium
iron
silicon
What phenomenon leads to the formation of light elements?
black hole
supernovae
big bang
cosmic ray collisions
Deuterium and Tritium are isotopes of __________.
hydrogen
lithium
beryllium
helium
Which of the following is NOT correct: “Isotopes of the same element __________.”?
have the same number of neutrons
contain the same number of electrons
have the same atomic number, but different atomic weights
have different number of neutrons, but the same number of protons
What do you call to the region of the stars when burning of elements occur?
core
fission shell
fusion shell
both options 2 and 3
In Mendeleev’s periodic law, which was his basis in classifying and arranging elements in the periodic table?
atomic mass
number of electrons
atomic number
number of neutrons
In Döbereiner’s triads, how did he predict the classification of elements?
The atomic mass of the first element in the triad is the approximate mean of the atomic masses of the second and third elements.
The atomic mass of the second element in the triad is the approximate mean of the atomic masses of the first and third elements.
The atomic mass of the third element in the triad is the approximate mean of the atomic masses of the first and second elements.
None of the above
Whose idea of classifying and arranging the elements in the periodic table is being used up to the present time?
Johann Wolfgang Döbereiner
Dimitri Ivanovich Mendeleev
John Newlands
Henry Gwyn Jeffreys Moseley
Which element is being synthesized from molybdenum through nuclear transmutation?
astatine
francium
promethium
technetium
