Changes in Matter Quiz
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Questions and Answers

Which of the following describes a physical change?

  • Fruit rotting
  • Ice melting into water (correct)
  • Rust forming on iron
  • A cake baking in the oven
  • A solute is the liquid in which a solute dissolves.

    False

    What is the freezing point of water in degrees Celsius?

    0°C

    When a solid dissolves in liquid, it forms a ______.

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

    Match the following terms with their definitions:

    <p>Solute = Substance that dissolves in a liquid Solvent = Liquid that dissolves the solute Suspension = Mixture where particles don't dissolve Precipitate = Solid formed from a solution</p> Signup and view all the answers

    Which of the following scenarios represents a chemical change?

    <p>Iron reacting with air and water</p> Signup and view all the answers

    Evaporation decreases with increase in wind speed.

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

    What happens when raw egg is boiled?

    <p>It hardens.</p> Signup and view all the answers

    A mixture where two or more substances are combined without changing their properties is called a ______.

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

    What is an example of a factor affecting the rate of evaporation?

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

    Study Notes

    Changes in Matter

    • Matter can experience physical or chemical changes.
    • Physical changes allow a substance to revert to its original form, unlike chemical changes.
    • Mixtures form when two or more substances combine without changing their properties
    • A homogeneous solution occurs when a solid dissolves completely in a liquid, creating a uniform mixture where the components are indistinguishable.
      • Examples include salt and water.
    • A heterogeneous mixture has visibly different components, like a mixture of oil and sand.
      • Types of heterogeneous mixtures include solutions, suspensions, and colloids.
        • Examples include salt water, egg and water, eg. milk

    States of Matter and Changes

    • Matter exists in three states: solid, liquid, and gas.
    • Changes of state include melting, solidification, vaporization, liquefaction, deposition.
    • Sublimation: A solid changing directly to a gas without becoming a liquid.
    • Melting: A solid changing to a liquid when heated.
    • Solidification: A liquid solidifying into a solid when cooled.
    • Vaporization: Change from liquid to gas.
    • Liquefaction: Gas changing to liquid
    • Deposition: Gas changing into solid

    Factors Affecting Changes

    • Temperature affects the rate of phase changes.
    • Wind speed influences evaporation rates.
    • Exposed surface area impacts evaporation.
    • Chemical changes result in a new substance with different properties. Examples of chemical changes include rust forming on iron and eggs cooking.
    • Changes in color, formation of bubbles and precipitate are indicators of chemical or physical changes.
    • Precipitate: A substance that is deposited as a solid from a solution. This often indicates a chemical change.

    Additional Points

    • Water freezes to form ice at 0°C (freezing point).

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    Description

    Test your knowledge on the various changes matter can undergo, including physical and chemical changes. Understand the differences between homogeneous and heterogeneous mixtures, and explore the states of matter and their transformations. This quiz will challenge your grasp of fundamental concepts in chemistry.

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