Lesson 2: Moving In A Little Closer

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Corrys
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Lesson 2:  Moving In A Little Closer - Quiz


Questions and Answers
  • 1. 

    Very small bits of matter are called

    • A.

      Atoms

    • B.

      Grams

    • C.

      Microchips

    • D.

      Milligrams

    Correct Answer
    A. Atoms
    Explanation
    Atoms are the smallest units of matter and are composed of subatomic particles such as protons, neutrons, and electrons. They are the building blocks of all elements and cannot be further broken down into smaller particles without losing their chemical properties. Therefore, atoms are the correct answer to the question.

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  • 2. 

    The simplest forms of matter where only one kind of atom is found are called

    • A.

      Microchips

    • B.

      Atoms

    • C.

      Elements

    • D.

      Compounds

    Correct Answer
    C. Elements
    Explanation
    Elements are the simplest forms of matter where only one kind of atom is found. Each element is made up of atoms that have the same number of protons in their nucleus. Examples of elements include hydrogen, oxygen, carbon, and iron. Microchips are not a form of matter, but rather electronic devices. Atoms are the building blocks of elements, and compounds are substances made up of two or more different elements chemically combined.

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  • 3. 

    Atoms are composed of smaller components known as

    • A.

      Elements

    • B.

      Subatomic particles

    • C.

      Microtons

    • D.

      Compounds

    Correct Answer
    B. Subatomic particles
    Explanation
    Atoms are the basic building blocks of matter, and they are composed of smaller components known as subatomic particles. These include protons, neutrons, and electrons. Protons have a positive charge, neutrons have no charge, and electrons have a negative charge. These subatomic particles interact with each other to form atoms of different elements. Therefore, the correct answer is subatomic particles.

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  • 4. 

    The central portion of an atom is known as the

    • A.

      Neutron

    • B.

      Electron cloud

    • C.

      Neutron cloud

    • D.

      Nucleus

    Correct Answer
    D. Nucleus
    Explanation
    The central portion of an atom is known as the nucleus. The nucleus contains protons and neutrons, which are the subatomic particles that make up the majority of an atom's mass. The electrons, on the other hand, are found in the electron cloud, which surrounds the nucleus. Therefore, the correct answer is nucleus.

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  • 5. 

    The subatomic particles analogous to planets circling the sun are known as

    • A.

      Neutron cloud

    • B.

      Proton cloud

    • C.

      Tornadic cloud

    • D.

      Electron cloud

    Correct Answer
    D. Electron cloud
    Explanation
    The subatomic particles analogous to planets circling the sun are known as electron cloud. This is because electrons, which are subatomic particles, orbit around the nucleus of an atom in a manner similar to how planets orbit around the sun. The electron cloud refers to the region around the nucleus where electrons are most likely to be found.

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  • 6. 

    The subatomic particles are thought to vary in mass.  Two have similar masses.  Those two particles are

    • A.

      The electrons and neutrons

    • B.

      The neutrons and protons

    • C.

      The electrons and protons

    • D.

      The croutons and electrons

    Correct Answer
    B. The neutrons and protons
    Explanation
    Neutrons and protons are the two subatomic particles that have similar masses. Neutrons have a slightly greater mass than protons, but their masses are considered to be similar. Electrons, on the other hand, have a much smaller mass compared to neutrons and protons. Croutons are not subatomic particles and are not related to the question.

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  • 7. 

    The number assigned to each element which tells the number of protons, electrons and generally the number of neutrons present in a particular element is called the 

    • A.

      Atomic number

    • B.

      Atomic mass number

    • C.

      Elemental number

    • D.

      Nuclear number

    Correct Answer
    A. Atomic number
    Explanation
    The atomic number is the number assigned to each element that represents the number of protons and electrons present in that element. It is a unique identifier for each element and determines its position on the periodic table. The atomic number does not include the number of neutrons, which is represented by the atomic mass number. The elemental number and nuclear number are not commonly used terms in chemistry.

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  • 8. 

    The correct symbol for the element sodium is 

    • A.

      Na

    • B.

      So

    • C.

      NA

    • D.

      Na

    Correct Answer
    D. Na
    Explanation
    The correct symbol for the element sodium is Na. The symbol for an element is a shorthand way of representing its name. In this case, "Na" is the symbol for sodium, which is derived from its Latin name "natrium". The symbol is always written with the first letter capitalized and the second letter in lowercase.

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  • 9. 

    The correct symbol for the element barium is 

    • A.

      Br

    • B.

      Be

    • C.

      Ba

    • D.

      Bi

    Correct Answer
    C. Ba
    Explanation
    The correct symbol for the element barium is Ba.

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  • 10. 

    The correct name for the element whose symbol is K is

    • A.

      Krypton

    • B.

      Kryptonite

    • C.

      Pottasium

    • D.

      Potassium

    Correct Answer
    D. Potassium
    Explanation
    The correct name for the element with the symbol K is Potassium. Krypton and Kryptonite are not correct because they are the names of different elements. Pottasium is a misspelling of Potassium, so it is also incorrect. Potassium is the correct answer because it matches the symbol K.

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  • Current Version
  • Oct 04, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Jul 13, 2013
    Quiz Created by
    Corrys
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