Atoms, Molecules & Ions: Dalton's Atomic Theory and Isotopes
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Questions and Answers

Which subatomic particle is negatively charged?

  • Neutron
  • Positron
  • Proton
  • Electron (correct)

    • What is formed when two or more atoms form chemical bonds with each other?

  • Ions
  • Molecules (correct)
  • Elements
  • Isotopes

    • Which of the following distinguishes one element from another?

  • Chemical bonding
  • Mass number
  • Isotopes
  • Atomic number (correct)

    • Which type of formula gives the simplest whole-number ratio of the different atoms in a compound?

    <p>Empirical formula</p> Signup and view all the answers

    What are atoms made up of?

    <p>Protons, electrons, and neutrons</p> Signup and view all the answers

    Which of the following represents compounds using symbols to show the types of atoms and their ratios in a chemical compound?

    <p>Chemical formulas</p> Signup and view all the answers

    Which of the following is NOT a diatomic molecule?

    <p>Carbon dioxide (CO₂)</p> Signup and view all the answers

    What is the net charge of an atom or molecule that loses two electrons?

    <p>Positive two (+2)</p> Signup and view all the answers

    Which law of matter states that a given compound always contains the same elements in the same proportions by mass?

    <p>Law of Definite Proportions</p> Signup and view all the answers

    What is the net electric charge of an ion that gains three electrons?

    <p>Negative three (-3)</p> Signup and view all the answers

    What is the chemical formula for glucose?

    <p>C₆H₁₂O₆</p> Signup and view all the answers

    Which of the following elements exists in nature as a diatomic molecule?

    <p>Fluorine (F)</p> Signup and view all the answers

    According to the Law of Conservation of Mass, what happens to matter during a chemical reaction?

    <p>Matter remains unchanged</p> Signup and view all the answers

    What is the net electric charge of an ion that loses four electrons?

    <p>Positive four (+4)</p> Signup and view all the answers

    What is the chemical formula for water?

    <p>H₂O</p> Signup and view all the answers

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