Atomic Structure Scientists Quiz
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Questions and Answers

What is the most accepted theory about the formation of the universe that explains why it continues to expand?

  • Big Bang Theory (correct)
  • Steady State Theory
  • Oscillating Theory
  • Divine Creation Theory
  • Which of the following is not considered as light elements?

  • Helium
  • Hydrogen
  • Lithium
  • Iron (correct)
  • What is true about nucleosynthesis?

  • The combination of elements to form compound.
  • It is the process of creating new atomic nuclei from pre-existing nuclei. (correct)
  • It is the creation of everything including all matter in the universe.
  • It is the division of atomic particle.
  • Which process is responsible for the formation of light elements such as Hydrogen and Helium?

    <p>Big Bang Nucleosynthesis</p> Signup and view all the answers

    Which element is the lightest and most abundant in outer space?

    <p>Hydrogen</p> Signup and view all the answers

    How are heavier elements formed?

    <p>Through nuclear fusion</p> Signup and view all the answers

    What is responsible for the formation of elements at the center of a star?

    <p>Stellar Nucleosynthesis</p> Signup and view all the answers

    How are elements heavier than iron primarily formed?

    <p>Supernova nucleosynthesis</p> Signup and view all the answers

    In nuclear equations, what is the result of fusing protons and neutrons?

    <p>Deuterium</p> Signup and view all the answers

    Which process involves the fusion of deuterium with neutrons to produce tritium?

    <p>Big Bang Nucleosynthesis</p> Signup and view all the answers

    What is the outcome of Helium-3 colliding with neutrons in nucleosynthesis?

    <p>Helium-4</p> Signup and view all the answers

    What determines an element according to atomic theory?

    <p>Protons</p> Signup and view all the answers

    Who confirmed the existence of the neutron, a particle with no electric charge?

    <p>James Chadwick</p> Signup and view all the answers

    Who discovered that atoms consist of a dense nucleus surrounded by a cloud of electrons?

    <p>Ernest Rutherford</p> Signup and view all the answers

    Which scientist developed the Plum Pudding Model of the atom?

    <p>J.J. Thomson</p> Signup and view all the answers

    According to the Octet Rule, what is the tendency of atoms with regard to electrons in their valence shells?

    <p>They prefer to have eight electrons.</p> Signup and view all the answers

    Which scientist's work led to the development of the Electron Cloud Model of the atom?

    <p>Erwin Schrödinger</p> Signup and view all the answers

    In atomic structure, what are positively charged ions called?

    <p>Cations</p> Signup and view all the answers

    Which biomolecule is the primary source of energy?

    <p>Carbohydrates</p> Signup and view all the answers

    What is the function of lipids in living organisms?

    <p>Insulation and energy storage</p> Signup and view all the answers

    Which molecule is NOT a carbohydrate?

    <p>Amylase</p> Signup and view all the answers

    Why do marathon runners eat meals rich in carbohydrates before races?

    <p>To store muscle glycogen and improve performance</p> Signup and view all the answers

    What is the primary function of nucleic acid?

    <p>Transfer of genetic information</p> Signup and view all the answers

    According to chemical kinetics, what is the rate of reaction defined as?

    <p>The speed at which a chemical reaction takes place</p> Signup and view all the answers

    Which factor affects the reaction rate by changing the reaction rate without being altered?

    <p>Catalyst</p> Signup and view all the answers

    What happens to the reaction rate when temperature is decreased from 40°C to 10°C?

    <p>The reaction rate will decrease</p> Signup and view all the answers

    How does increasing the pressure affect the rate of reaction?

    <p>Increase the rate of reaction</p> Signup and view all the answers

    What is the impact of diluting a solution on the rate of reaction?

    <p>Decrease the rate of reaction</p> Signup and view all the answers

    Why should medicinal products be stored at room temperature?

    <p>To avoid changes in their chemical composition</p> Signup and view all the answers

    How does adding an enzyme to a reaction affect the rate of reaction?

    <p>Increase the rate of reaction</p> Signup and view all the answers

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