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Understanding Mixtures
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Understanding Mixtures

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Questions and Answers

What happens if you mix 100 g of salt with 100 g of sand?

  • Their total mass becomes less than 200 g
  • Their total mass becomes 200 g (correct)
  • Their total mass becomes more than 200 g
  • Their total mass remains at 100 g

    • What is a characteristic of a heterogeneous mixture?

  • The different substances cannot be visually distinguished
  • The mixture contains only one type of substance
  • The particles settle at different rates (correct)
  • The different substances are evenly mixed

    • How can you visually differentiate between salt and white sand in a mixture?

  • By tasting them
  • By smelling them
  • By heating the mixture
  • By using a magnifying glass (correct)

    • What happens when sulfur and iron form a mixture?

    <p>They do not come apart</p> Signup and view all the answers

    What characteristic makes fresh milk a heterogeneous mixture?

    <p>A layer of fat forms on its surface</p> Signup and view all the answers

    What is a mixture?

    <p>Two or more different substances mixed together while retaining each substance's original properties</p> Signup and view all the answers

    In a mixture, what happens to the properties of the substances when they are mixed?

    <p>The properties of the substances do not change</p> Signup and view all the answers

    How can iron filings and sulfur be separated in a mixture?

    <p>By using a magnet</p> Signup and view all the answers

    What distinguishes a compound from a mixture?

    <p>Mixtures retain the original properties of their components, compounds do not</p> Signup and view all the answers

    What happens when iron and sulfur are heated together?

    <p>They create a compound with new properties</p> Signup and view all the answers

    What characterizes an external unexpanded mixture?

    <p>It contains materials that can be distinguished from each other</p> Signup and view all the answers

    A mixture is a combination of two or more different substances that lose their original properties when mixed together.

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

    When iron filings and sulfur are mixed, they can be separated using a magnet due to their different properties.

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

    Iron sulfide, formed when iron and sulfur chemically combine, has similar physical properties to iron and sulfur.

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

    An external unexpanded mixture is a type of mixture where materials cannot be distinguished from each other.

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

    Mixtures can always be separated back into their original components.

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

    When mixing salt with white sand, the properties of the substances remain unchanged.

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

    Iron and sulfur form a mixture that separates easily.

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

    When examining a mixture of salt and white sand, they appear different under a magnifying glass.

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

    Fresh milk is an example of a homogeneous mixture.

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

    The atmosphere on a clear day contains a homogeneous mixture of clouds and air.

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

    When adding 100 g of salt to 100 g of sand, the total mass remains 200 g due to the law of conservation of mass.

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

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