17 Questions
Which group of elements constitute over 99% of the mass of most cells?
P-block elements
What is a characteristic feature of major elements found in living cells?
They are mostly P-block elements
Which elements are considered minor elements in living cells?
Mn, Fe, Co, and Ni
What is the similarity between the composition of Earth and the composition of the human body in terms of elements?
Earth and human body share similar concentrations of some elements
Why are major elements like Carbon, Hydrogen, Oxygen, Nitrogen, Phosphorus, and Sulphur important in living cells?
They are present in organic compounds of cells
Which statement about the representation of periodic table groups in living cells is correct?
15 out of 18 groups on the periodic table are found in cells
What is a distinguishing feature of major elements in living cells compared to other elements?
They are neither too reactive nor inert
According to Dalton's theory, why are atoms of the same element considered identical?
They are identical in size, mass, and chemical properties.
What did Democritus suggest about the nature of matter?
Matter is made up of small indivisible particles called atoms.
What makes Uranium potentially harmful to cells?
Its emission of radiations that could harm cells.
Which element's property allows it to form bonds with itself in chains, branches, or rings?
Carbon
What type of compound does Platinum form that serves as an anti-cancer drug?
Inorganic compounds
What was an incorrect aspect of Dalton's theory?
Indivisibility of atoms
Which scientist proposed the Plum pudding or watermelon model of atomic structure?
J.J. Thompson
What did Louis de Broglie suggest about electrons in the Wave Mechanistic Model of the atom?
Electrons have both momentum and wavelength
Which quantum number describes the orientation of orbitals in space?
Magnetic quantum number (mi)
In terms of electronic configuration, what does the Orbital quantum number (l) determine?
The shape of an orbital
Test your knowledge about the elements that constitute living cells, including the similarities between elements in the Earth, atmosphere, and the human body. Explore the main ions found in both sea water and blood plasma, and understand the concept of chemical democracy.
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