Atomic Structure & Periodic Table Quiz
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Questions and Answers

What characterizes a neutral atom?

  • It has the same number of protons and neutrons.
  • It has different numbers of protons and electrons.
  • It has the same number of protons and electrons. (correct)
  • It has a net positive charge.

    • Which statement correctly describes an ion?

  • It is electrically neutral.
  • It can be formed from multiple atoms.
  • It always has the same number of neutrons as protons.
  • It has different numbers of protons and electrons. (correct)

    • How would you represent a lithium ion with a +1 charge?

  • Li+1 (correct)
  • Li-1
  • Li0
  • Li+2

    • Which of the following describes a negatively charged atom?

    <p>More electrons than protons. (D)</p> Signup and view all the answers

    How many total electrons does the Al+3 ion contain?

    <p>10 (D)</p> Signup and view all the answers

    If an atom has 4 protons and 5 electrons, what is its charge?

    <p>-1 (C)</p> Signup and view all the answers

    What is the process called when an atom loses an electron?

    <p>Ionization (D)</p> Signup and view all the answers

    Which of these isotopes of Lithium has the highest mass number?

    <p>8Li (A)</p> Signup and view all the answers

    What is the total number of neutrons in the isotope 7Li?

    <p>4 (B)</p> Signup and view all the answers

    Which of the following atoms would be represented as Ca +2?

    <p>An atom that has lost two electrons. (B)</p> Signup and view all the answers

    What is the atomic number of an element represented by its protons count?

    <p>The number of protons only. (B)</p> Signup and view all the answers

    Which positive ion has 25 total electrons after losing electrons?

    <p>Co+2 (B)</p> Signup and view all the answers

    In the notation 12C, what does the number 6 represent?

    <p>Atomic number (C)</p> Signup and view all the answers

    What describes isotopes?

    <p>Same protons and different neutrons (C)</p> Signup and view all the answers

    Which positive ion has lost 5 electrons according to common understanding?

    <p>Ti+5 (C)</p> Signup and view all the answers

    What is the definition of isotopes?

    <p>Atoms with the same number of protons but different neutrons (A)</p> Signup and view all the answers

    How many neutrons are present in a Sodium atom, given it has an atomic number of 11 and a mass number of 23?

    <p>12 (A)</p> Signup and view all the answers

    In a neutral atom, how does the number of protons compare to the number of electrons?

    <p>The number of protons is equal to the number of electrons. (B)</p> Signup and view all the answers

    What is the mass number of an element with 8 protons and 8 neutrons?

    <p>16 (A)</p> Signup and view all the answers

    If an atom of Carbon has 6 protons, how many electrons does it have, if it is neutral?

    <p>6 (D)</p> Signup and view all the answers

    What governs the maximum number of electrons that can occupy the second energy level in an atom?

    <p>The formula $2n^2$ (C)</p> Signup and view all the answers

    How can you find the number of neutrons in an atom using the periodic table?

    <p>Subtract atomic number from atomic mass. (B)</p> Signup and view all the answers

    In the Bohr model of an atom, how many electrons can the first energy level hold?

    <p>2 (A)</p> Signup and view all the answers

    An atom has 10 protons and 12 neutrons. What is its mass number?

    <p>22 (C)</p> Signup and view all the answers

    What subatomic particle carries a positive charge?

    <p>Proton (B)</p> Signup and view all the answers

    Which statement is true regarding the mass of subatomic particles?

    <p>Electrons have a mass of less than 1 amu. (C)</p> Signup and view all the answers

    In a neutral atom, which of the following conditions holds true?

    <p>Number of protons equals the number of electrons. (C)</p> Signup and view all the answers

    How is the atomic number defined?

    <p>The number of protons in an atom. (A)</p> Signup and view all the answers

    What determines the identity of an atom?

    <p>The number of protons (A)</p> Signup and view all the answers

    Which of the following correctly describes neutrons?

    <p>Neutral particles with mass similar to protons. (D)</p> Signup and view all the answers

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

    <p>Atomic mass minus atomic number. (A)</p> Signup and view all the answers

    Where are electrons located in an atom?

    <p>In defined orbits around the nucleus. (B)</p> Signup and view all the answers

    Study Notes

    Atomic Structure & Periodic Table

    • Matter is anything that takes up space and has mass
    • All matter is made of atoms
    • Atoms are the building blocks of matter
    • Atoms are too small to be seen
    • A penny contains 2 x 1022 atoms
    • Atoms have protons, neutrons, and electrons

    Structure of the Atom

    • An atom is the smallest unit of matter
    • Atoms contain a nucleus made up of protons and neutrons
    • Protons are positively charged particles
    • Neutrons are neutral particles (have no charge)
    • Electrons are negatively charged particles
    • Protons and neutrons are much heavier than electrons
    • Electrons are found in the electron cloud surrounding the nucleus
    • Electrons are in constant motion
    • Electrons are responsible for the atom’s reactions

    Periodic Table Information

    • Atomic Number is equal to the number of protons
    • The number of protons determines the element
    • In a neutral atom, the number of electrons is equal to the number of protons
    • Mass Number = number of protons + number of neutrons
    • Electron number = atomic number

    Rules for electron arrangement

    • 1st energy level holds up to 2 electrons
    • 2nd energy level holds up to 8 electrons
    • 3rd energy level holds up to 18 electrons

    Ions

    • Ions are atoms with a positive or negative charge
    • Positive ions (cations) lose electrons
    • Negative ions (anions) gain electrons

    Isotopes

    • Isotopes are atoms of the same element with different numbers of neutrons
    • Isotopes have the same number of protons but different mass numbers
    • Mass number = protons + neutrons
    • Isotopes have the same atomic number

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    Atomic Structure & Periodic Table Notes PDF

    Description

    Test your understanding of atomic structure and the periodic table with this quiz. Explore the building blocks of matter, the properties of protons, neutrons, and electrons, and the arrangement of elements in the periodic table. Perfect for students studying chemistry concepts related to matter and atoms.

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