The Periodic Table
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  • Question 1
    30 seconds
    Q.

    The order of elements in the periodic table is based on

    answer choices

    the number of protons in the nucleus.

    the electric charge of the nucleus.

    the number of neutrons in the nucleus.

    atomic mass.

  • Question 2
    30 seconds
    Q.

    Atoms of elements that are in the same group have the same number of

    answer choices

    protons.

    neutrons.

    valence electrons.

    protons and neutrons.

  • Question 3
    30 seconds
    Q.

    Which of the following elements is an alkali metal?

    answer choices

    calcium

    magnesium

    mercury

    sodium

  • Question 4
    30 seconds
    Q.

    In Mendeleev's periodic table, elements in each column had similar

    answer choices

    atomic masses.

    properties.

    atomic numbers.

    symbols.

  • Question 5
    30 seconds
    Q.

    How was Mendeleev's periodic table arranged?

    answer choices

    by increasing atomic mass

    by decreasing atomic mass

    by increasing atomic number

    by decreasing atomic number

  • Question 6
    30 seconds
    Q.

    Mendeleev left gaps in his periodic table because

    answer choices

    the table was too small.

    protons belonged there.

    the table was too full.

    no known elements fit there.

  • Question 7
    30 seconds
    Q.

    Each column of the periodic table is

    answer choices

    an element.

    a group.

    an isotope.

    a period.

  • Question 8
    30 seconds
    Q.

    The three main groups of elements are metals, nonmetals, and

    answer choices

    inert gases.

    alkali metals.

    radioactive isotopes.

    semiconductors/metalloids.

  • Question 9
    30 seconds
    Q.

    Most elements are

    answer choices

    metals.

    nonmetals.

    metalloids.

    semiconductors.

  • Question 10
    30 seconds
    Q.

    Elements in an elemental family have similar

    answer choices

    atomic symbols.

    atomic sizes.

    atomic weights.

    chemical properties.

  • Question 11
    30 seconds
    Q.

    The order of elements in the modern periodic table is based on an element's

    answer choices

    atomic number.

    name.

    chemical symbol.

    atomic mass.

  • Question 12
    30 seconds
    Q.

    Which statement about the alkali metals is correct?

    answer choices

    They are located in the left-most column of the periodic table.

    They are extremely nonreactive.

    They are usually gases.

    They form negative ions with a 1- charge.

  • Question 13
    30 seconds
    Q.

    Metals tend to be

    answer choices

    gases.

    dull.

    brittle.

    good conductors.

  • Question 14
    30 seconds
    Q.

    Which group is very stable due to the fact that they have a full outermost energy level?

    answer choices

    alkali metals

    halogens

    alkaline-earth metals

    noble gases

  • Question 15
    30 seconds
    Q.

    Which of the following is a property of group 18 elements?

    answer choices

    malleable

    brittleness

    high electrical conductivity

    unlikely to react with other elements

  • Question 16
    30 seconds
    Q.

    Based on its location on the periodic table, which of these elements most likely has physical and chemical properties most similar to boron (B)?

    answer choices

    magnesium (Mg)

    aluminum (Al)

    neon (Ne)

    chlorine (Cl)

  • Question 17
    30 seconds
    Q.

    Which of the following groups on the Periodic Table is likely to form positively charged ions (or cations)?

    answer choices

    group 1

    group 13

    group 17

    group 18

  • Question 18
    30 seconds
    Q.

    Which of the following elements would most likely be a shiny, gray-colored solid at room temperature, conduct electricity, and dent when hit with a hammer?

    answer choices

    argon (Ar)

    chlorine (Cl)

    sulfur (S)

    aluminum (Al)

  • Question 19
    30 seconds
    Q.

    Alkali metals are extremely reactive because they

    answer choices

    have every small atomic masses.

    are not solid at room temperature.

    have one valence electron that is easily removed to form a positive ion.

    have two valence electrons that form compounds with calcium and magnesium.

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