Structure of Matter and Parts of an Atom
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Structure of Matter and Parts of an Atom

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Questions and Answers

What is an element?

  • The smallest part that an element can be reduced to and still keep its properties
  • A combination of two or more elements
  • The smallest particle that a compound can be reduced to
  • A substance that cannot be decomposed any further by chemical action (correct)

    • What is a molecule?

  • A combination of two or more elements
  • The smallest part that an element can be reduced to and still keep its properties
  • A substance that cannot be decomposed any further by chemical action
  • The smallest particle that a compound can be reduced to before breaking down (correct)

    • Which subatomic particle has no charge?

  • Neutron (correct)
  • Proton
  • Atom
  • Electron

    • What is the charge of an electron?

    <ul> <li>charge</li> </ul> Signup and view all the answers

    Which particle has the smallest mass?

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

    Study Notes

    Elements and Molecules

    • An element is a pure substance consisting of only one type of atom, which cannot be broken down into simpler substances by chemical means.
    • Elements are organized in the periodic table, categorized by their atomic number, which represents the number of protons in the nucleus of an atom.
    • A molecule is formed when two or more atoms chemically bond together; it can consist of atoms from the same or different elements.

    Subatomic Particles

    • The neutron is a subatomic particle that has no charge, contributing to the mass of an atom without influencing its electrical properties.
    • Electrons carry a negative charge, denoted as -1, and are found in the electron cloud surrounding the nucleus of an atom.

    Particle Mass Comparison

    • The electron has the smallest mass among subatomic particles, significantly lighter than protons and neutrons, influencing atomic structure and chemical behavior.

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    Description

    Learn about the basic concepts of matter, elements, compounds, molecules, and atoms. Explore the structure of matter and the different components that make up an atom.

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