Biology and Chemistry Concepts Quiz
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Questions and Answers

Which statement accurately defines a hypothesis in scientific research?

  • A hypothesis is an educated guess that can be tested. (correct)
  • A hypothesis is an untestable prediction about future events.
  • A hypothesis is a conclusively proven fact.
  • A hypothesis is merely a summary of gathered data.

    • What role do valence electrons play in chemical bonding?

  • They influence the temperature of chemical reactions.
  • They participate in chemical bonds and determine reactivity. (correct)
  • They are involved in the formation of isotopes.
  • They determine the mass of the atom.

    • In the given chemical equation, CO₂ + H₂O → H₂CO₃, which component represents the product?

  • H₂O
  • The arrow indicates the product.
  • CO₂
  • H₂CO₃ (correct)

    • Which of the following best describes homeostasis?

    <p>The maintenance of a stable internal environment despite external changes.</p> Signup and view all the answers

    On the pH scale, which statement correctly identifies the characteristics of an acidic solution?

    <p>It has a pH less than 7 and donates protons in solution.</p> Signup and view all the answers

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