Elements And Their Properties, Periodic Table And Trends, Compounds Unit 5 - Quiz 1

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Elements And Their Properties, Periodic Table And Trends, Compounds Unit 5 - Quiz 1 - Quiz

Elements can be characterized by their atomic size, which in turn defines its strength. An element with the largest atomic size can be said to be stronger because of its ability to withstand any kind of pressure exerted on it. Test how well you understood unit five on elements by taking up the quiz below.


Questions and Answers
  • 1. 

    A substance is tested and is found to have the following physical properties: high electrical conductivity, malleability, high luster. The substance is most likely a _____.

    • A.

      Metal

    • B.

      Metalloid

    • C.

      Nonmetal

    • D.

      Cannot be determined without more data

    Correct Answer
    A. Metal
    Explanation
    Based on the given physical properties, the substance is most likely a metal. Metals are known for their high electrical conductivity, malleability, and high luster. These properties are characteristic of metals, whereas nonmetals typically have low electrical conductivity and are not malleable. Without more data, it is reasonable to conclude that the substance is a metal.

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  • 2. 

    The first person to develop the periodic table was _____.

    • A.

      Mendeleev

    • B.

      Dalton

    • C.

      Bohr

    • D.

      Rutherford

    Correct Answer
    A. Mendeleev
    Explanation
    Mendeleev is credited with developing the periodic table. He arranged the elements based on their atomic mass and observed patterns in their properties. His table allowed for the prediction of the existence and properties of undiscovered elements. Mendeleev's work laid the foundation for the modern periodic table that we use today. Dalton, Bohr, and Rutherford made significant contributions to the field of chemistry and atomic theory, but they did not develop the periodic table.

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  • 3. 

    A period is a horizontal row on the periodic table.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    A period is not a horizontal row on the periodic table. It is a vertical column. The correct answer is False.

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  • 4. 

    Which of the following elements is not in the same family on the periodic table? Use this link to help you.

    • A.

      N

    • B.

      O

    • C.

      P

    • D.

      Sb

    Correct Answer
    B. O
    Explanation
    The element O (oxygen) is not in the same family as the other elements listed (N, P, and Sb) on the periodic table. Oxygen belongs to the chalcogens family, while nitrogen, phosphorus, and antimony belong to the pnictogens family.

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  • 5. 

    Which of the following would be classified as a metalloid? Use this link to help you.

    • A.

      Aluminum

    • B.

      Copper

    • C.

      Tin

    • D.

      Silicon

    Correct Answer
    D. Silicon
    Explanation
    Silicon would be classified as a metalloid because it exhibits properties of both metals and nonmetals. It is a semiconductor, meaning it can conduct electricity under certain conditions but not as well as a metal. Silicon is also brittle and has a high melting point, similar to nonmetals. Therefore, it falls into the category of metalloids, which have characteristics that are intermediate between metals and nonmetals.

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  • 6. 

    Which of the following families contains elements that will not form compounds? Use this link to help you.

    • A.

      Metalloids

    • B.

      Halogens

    • C.

      Noble gases

    • D.

      Strong metals

    Correct Answer
    C. Noble gases
    Explanation
    Noble gases are the elements in the periodic table that have a full outer electron shell, making them highly stable and unreactive. Due to their stable electron configuration, noble gases do not readily form compounds with other elements. This is because they already have a complete set of valence electrons and do not need to gain, lose, or share electrons with other elements to achieve stability. Therefore, noble gases are the only family listed that contains elements that will not form compounds.

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  • 7. 

    The atomic weight of hydrogen is 1.00794. Use this link to help you.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    The atomic weight of an element is the average mass of its atoms, taking into account the different isotopes and their abundance. The atomic weight of hydrogen is indeed 1.00794, as stated in the question. This value is calculated based on the natural abundance of hydrogen isotopes, with the most common isotope being hydrogen-1. Therefore, the given answer "True" is correct.

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  • 8. 

    How many protons does the element cobalt have? Use this link to help you.

    • A.

      27

    • B.

      32

    • C.

      58.93

    • D.

      59

    Correct Answer
    A. 27
    Explanation
    Cobalt is an element with atomic number 27, which represents the number of protons in the nucleus of an atom. Therefore, the correct answer is 27.

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  • 9. 

    What is the atomic mass of the element cobalt? Use this link to help you.

    • A.

      27

    • B.

      31

    • C.

      59

    • D.

      31.71

    Correct Answer
    C. 59
    Explanation
    The atomic mass of an element is the average mass of all the isotopes of that element, taking into account their relative abundance. The atomic mass of cobalt is 59, which means that on average, cobalt atoms have a mass of 59 atomic mass units (amu).

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  • 10. 

    If the unknown element displays many extremely strong metallic properties, where is it most likely to be located on the periodic table? Use this link to help you.

    • A.

      Far right

    • B.

      Along the "stair step"

    • C.

      Middle

    • D.

      Far left

    Correct Answer
    D. Far left
    Explanation
    The far left side of the periodic table is where the most metallic elements are located. These elements tend to have properties such as high electrical and thermal conductivity, luster, and malleability. As you move from left to right across the periodic table, the metallic properties decrease and the non-metallic properties increase. Therefore, if an unknown element displays many extremely strong metallic properties, it is most likely to be located on the far left side of the periodic table.

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  • 11. 

    Thre are three known forms of hydrogen. These forms are called ______ of each other. Each of these forms will have the same number of ______ but different numbers of _______.

    • A.

      Isotopes, neutrons, protons

    • B.

      Ions, electrons, neutrons

    • C.

      Isotopes, protons, neutrons

    • D.

      Copies, neutrons, electrons

    Correct Answer
    C. Isotopes, protons, neutrons
    Explanation
    The question asks for the three known forms of hydrogen and their characteristics. The correct answer is "isotopes, protons, neutrons." Isotopes refer to different forms of an element that have the same number of protons (which determines the element) but different numbers of neutrons. In the case of hydrogen, there are three isotopes: protium (1 proton, 0 neutrons), deuterium (1 proton, 1 neutron), and tritium (1 proton, 2 neutrons). Therefore, the answer accurately describes the relationship between isotopes, protons, and neutrons in hydrogen.

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  • Mar 21, 2023
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  • Dec 21, 2012
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    Haszshe
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