Classification of Matter Flashcards
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Classification of Matter Flashcards

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Questions and Answers

What is matter classified as?

  • Pure substances (correct)
  • Elements
  • Mixtures (correct)
  • Atoms
  • How are mixtures classified?

  • Heterogeneous
  • Homogeneous
  • Both A and B (correct)
  • None of the above
  • Mixtures contain two or more _____________ which can be separated through ______________.

    pure substances, physical change

    Heterogeneous mixtures have _______________ and homogeneous mixtures called _____________ have one phase.

    <p>two or more phases, solutions</p> Signup and view all the answers

    What are pure substances classified as?

    <p>A and B</p> Signup and view all the answers

    Elements are represented by ___________ and made of ___________.

    <p>Chemical symbols, atoms</p> Signup and view all the answers

    What are the chemical symbols for carbon and oxygen?

    <p>C and O</p> Signup and view all the answers

    O occurs as?

    <p>O2</p> Signup and view all the answers

    Elements _______________, which cannot be broken down.

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

    What are compounds represented by and made of?

    <p>Chemical formulas, molecules</p> Signup and view all the answers

    What are the chemical formulas for salt and water?

    <p>NaCl and H2O</p> Signup and view all the answers

    Molecules can be broken down into ______________ through ______________.

    <p>atoms, chemical changes</p> Signup and view all the answers

    Study Notes

    Classification of Matter

    • Matter is divided into two main categories: mixtures and pure substances.

    Mixtures

    • Mixtures are further classified into heterogeneous and homogeneous types.
    • Mixtures consist of two or more pure substances that can be separated by physical means.

    Heterogeneous vs. Homogeneous Mixtures

    • Heterogeneous mixtures have two or more distinct phases, allowing for visible separation.
    • Homogeneous mixtures, also known as solutions, consist of a single phase where components are uniformly distributed.

    Pure Substances

    • Pure substances fall into two categories: elements and compounds.

    Elements

    • Elements are represented by chemical symbols and are made up of atoms.
    • The chemical symbol for carbon is C, and for oxygen, it is O.
    • Oxygen occurs as O2, indicating that it consists of two atoms.
    • Elements are defined by their atomic structure and cannot be broken down further.

    Compounds

    • Compounds are represented by chemical formulas and are composed of molecules.
    • Common examples of chemical formulas include sodium chloride (NaCl) for salt and water (H2O).
    • Molecules in compounds can be broken down into atoms through chemical changes.

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    Description

    This quiz features flashcards focused on the classification of matter, including definitions and types of mixtures and pure substances. Test your understanding of heterogeneous and homogeneous mixtures, as well as the properties of pure substances. Perfect for students looking to solidify their knowledge on this fundamental topic in chemistry.

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