Chemistry: Properties of Elements and Electron Configuration
31 Questions
13 Views

Chemistry: Properties of Elements and Electron Configuration

Created by
@DeftParticle964

Podcast Beta

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What information can be determined about an element based on its group on the periodic table?

  • The number of valence electrons (correct)
  • The number of energy levels
  • The element's atomic mass
  • The element's phase at room temperature

    • All elements in the same period have a different number of energy levels.

    False

    What is the only element that has 2 valence electrons and is considered an exception to the group trend?

    Helium

    Elements to the right of the staircase on the periodic table, including hydrogen, are called ___.

    <p>Non-metals</p> Signup and view all the answers

    Match the group number with its corresponding group name:

    <p>Group 1 = Alkai Metals Group 2 = Alkaline Earth Metals Group 17 = Halogens Group 18 = Noble Gasses</p> Signup and view all the answers

    Which subatomic particle has a positive charge?

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

    The nucleus is responsible for the volume of the atom.

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

    What is the charge of a neutron?

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

    The first scientist to create a periodic table was __________.

    <p>Dmitri Mendeleev</p> Signup and view all the answers

    Match the following scientists with their contributions to the periodic table:

    <p>Dmitri Mendeleev = First periodic table arranged by atomic mass Henry Moseley = Periodic table arranged by atomic number</p> Signup and view all the answers

    Which subatomic particle is responsible for the positive charge in an atom?

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

    The electron cloud is primarily responsible for the mass of the atom.

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

    Who is credited with the arrangement of the modern periodic table?

    <p>Henry Moseley</p> Signup and view all the answers

    The smallest particle of an element, which retains the properties of that element, is called an ______.

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

    Match the following subatomic particles with their properties:

    <p>Neutron = Neutral charge Proton = Positive charge Electron = Negative charge</p> Signup and view all the answers

    What does the atomic number indicate about an atom?

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

    Isotopes of an element have the same number of neutrons.

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

    What is the mass number of an atom that has 5 protons and 7 neutrons?

    <p>12</p> Signup and view all the answers

    In the nuclear form of isotope notation, the ______ is written along with the symbol.

    <p>mass number</p> Signup and view all the answers

    Match the element with its atomic number:

    <p>Potassium = 19 Iodine = 53 Fluorine = 9 Sodium = 11</p> Signup and view all the answers

    Which of the following isotopes of carbon has more neutrons?

    <p>Carbon-13</p> Signup and view all the answers

    How can you determine the number of neutrons in an atom?

    <p>Mass number - Atomic number</p> Signup and view all the answers

    The average atomic mass can be used to find the mass number of an atom by rounding it to the nearest whole number.

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

    What is the maximum number of electrons that can be added to the 2nd energy level?

    <p>8</p> Signup and view all the answers

    All nonmetals are gases.

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

    What property distinguishes metalloids from metals and nonmetals?

    <p>They have physical properties of both metals and nonmetals.</p> Signup and view all the answers

    A neutral atom of chlorine has ___ electrons.

    <p>17</p> Signup and view all the answers

    Which of the following describes the properties of metals?

    <p>Malleable and ductile</p> Signup and view all the answers

    Match the following elements with their atomic number:

    <p>Sodium = 11 Chlorine = 17 Neon = 10 Sulfur = 16</p> Signup and view all the answers

    Why is hydrogen located in group 1 of the periodic table?

    <p>It has 1 valence electron.</p> Signup and view all the answers

    The number of electron shells corresponds to the number of energy levels.

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

    Study Notes

    Properties of Elements

    • Metals are generally shiny, malleable, ductile and good conductors of heat and electricity.
    • Nonmetals are gases or brittle solids, and poor conductors.
    • Metalloids have physical properties of both metals and nonmetals.
    • Transuranium elements are located after uranium on the periodic table.

    Electron Configuration

    • The first energy level can hold a maximum of 2 electrons.
    • The second energy level can hold a maximum of 8 electrons.
    • The third energy level can hold a maximum of 18 electrons.

    Bohr Models

    • The number of electron shells in a Bohr model corresponds to the number of energy levels in an atom.

    Hydrogen's Position

    • Hydrogen belongs in Group 1 despite not being a metal because it has 1 valence electron.

    Electron Count

    • A neutral atom of oxygen has 8 electrons.
    • A neutral atom of sulfur has 16 electrons.

    Table of Element Properties

    • Sodium (Na) has 11 protons, 12 neutrons, and 11 electrons.
    • Chlorine (Cl) has 17 protons, 18 neutrons, and 17 electrons.
    • Neon (Ne) has 10 protons, 10 neutrons, and 10 electrons.
    • Fluorine (F) has 9 protons, 10 neutrons, and 9 electrons.
    • Sulfur (S) has 16 protons, 16 neutrons, and 16 electrons.

    Studying That Suits You

    Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

    Quiz Team

    Description

    This quiz covers essential concepts in chemistry, focusing on the properties of elements, electron configurations, and the significance of Bohr models. Test your understanding of metals, nonmetals, and the arrangement of electrons in atoms. Get ready to explore the periodic table and the classification of elements!

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser