Chemical Changes in Matter Quiz
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Questions and Answers

Which type of properties can be measured or observed without changing the identity of a substance?

  • Bonding properties
  • Mass properties
  • Chemical properties
  • Physical properties (correct)

    • What are the two kinds of properties in science?

  • Chemical and physical properties (correct)
  • Reversible and irreversible properties
  • Intrinsic and extrinsic properties
  • Observable and unobservable properties

    • When water is frozen or heated up, what changes?

  • State of matter changes
  • Chemical properties change
  • Identity of water changes
  • Physical properties change (correct)

    • Which type of properties are independent of the quantity of matter?

    <p>Intensive properties</p> Signup and view all the answers

    What is a property often used to describe in science?

    <p>All of the above</p> Signup and view all the answers

    What are extensive properties dependent on?

    <p>Sample size or quantity of matter</p> Signup and view all the answers

    What is the fundamental unit of matter according to Democritus?

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

    Which subatomic particle has a charge of +1 and a mass of 1 atomic mass unit?

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

    What is the most common element in the universe?

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

    Which model proposed that all matter was made of indivisible atoms?

    <p>John Dalton's atomic model</p> Signup and view all the answers

    What type of change is observed when iron is exposed to both air and moisture?

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

    What are atoms composed of?

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

    What is a chemical property of iron?

    <p>Formation of rust when exposed to oxygen</p> Signup and view all the answers

    Which phase change occurs when a liquid turns into a solid?

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

    What is the defining characteristic of a gas state of matter?

    <p>Fast-moving atoms with no defined volume or shape</p> Signup and view all the answers

    What distinguishes a physical change from a chemical change?

    <p>Preserves the substance's chemical identity</p> Signup and view all the answers

    What is the 'Triple Point' of states of matter?

    <p>The point at which water exists in all three states of matter at once</p> Signup and view all the answers

    What is an example of a chemical change?

    <p>Rusting of metals</p> Signup and view all the answers

    Which property is an example of an intensive physical property?

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

    What is the melting point of carbon in degrees Celsius?

    <p>3500.0</p> Signup and view all the answers

    Which property is an example of an extensive physical property?

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

    What is the density of water at 20 degrees Celsius in grams per cubic centimeter?

    <p>0.998</p> Signup and view all the answers

    Which of the following is an example of a chemical property?

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

    What is the unit commonly used to measure volume in liquids?

    <p>Liters (L)</p> Signup and view all the answers

    Who discovered the first subatomic particle, the electron?

    <p>JJ Thomson</p> Signup and view all the answers

    What did Ernest Rutherford discover during the gold foil experiment?

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

    How did Niels Bohr elaborate on Rutherford's planetary model of the atom?

    <p>Stated that electrons orbited the nucleus in fixed energy levels</p> Signup and view all the answers

    What did Erwin Schrodinger develop in the 1920s?

    <p>Cloud model of the atom</p> Signup and view all the answers

    How are elements defined based on?

    <p>Number of protons in an atom's nucleus</p> Signup and view all the answers

    What are elements made of?

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

    What makes each element different?

    <p>Number of protons, neutrons, and electrons</p> Signup and view all the answers

    Which is the lightest and most abundant element in the universe?

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

    Which element has 2 protons, 2 electrons, and 2 neutrons?

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

    What determines the physical and chemical properties of the atoms of each element?

    <p>Unique combination of subatomic particles</p> Signup and view all the answers

    What is the definition of an isotope?

    <p>Atoms with different mass numbers</p> Signup and view all the answers

    When were isotopes first characterized?

    <p>1913</p> Signup and view all the answers

    What was the term 'isotope' coined in reference to?

    <p>'Same place' occupied in the Periodic Table</p> Signup and view all the answers

    'Isotope' refers to different species of atoms of the same chemical element that differ in their _____.

    <p>'Atomic masses'</p> Signup and view all the answers

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