Pharmaceutical Organic Chemistry I First Lecture Quiz
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Questions and Answers

What is the definition of an atom?

  • A combination of protons and neutrons.
  • An electrically charged particle.
  • A dense, positively charged nucleus surrounded by negatively charged electrons.
  • The smallest unit of an element that retains the chemical properties of the element. (correct)

    • What is the mass number of an atom?

  • The number of protons in the atom nucleus.
  • The total number of particles in the atom.
  • The number of electrons in the atom.
  • The sum of protons and neutrons. (correct)

    • What do atoms consist of?

  • Only positively charged particles.
  • An equal number of protons and neutrons.
  • A dense, negatively charged nucleus surrounded by positively charged electrons.
  • A dense, positively charged nucleus surrounded by negatively charged electrons. (correct)

    • What is the atomic number of an atom?

    <p>The number of protons in the atom nucleus.</p> Signup and view all the answers

    What is the composition of the atomic nucleus?

    <p>Positively charged protons and neutrally charged neutrons</p> Signup and view all the answers

    What is the relationship between mass number and atomic number?

    <p>Mass number = number of protons + number of neutrons, Atomic number = number of protons</p> Signup and view all the answers

    What is the definition of an atom?

    <p>The smallest unit of an element that retains the chemical properties of the element</p> Signup and view all the answers

    What does atomic hybridization refer to?

    <p>Mixing atomic orbitals to form new hybrid orbitals suitable for covalent bonding</p> Signup and view all the answers

    What does the term 'electrically neutral' mean in relation to atoms?

    <p>The positive charge from protons is balanced by the negative charge from electrons</p> Signup and view all the answers

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