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Science: Chemical Reactions and Thermal Properties
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Science: Chemical Reactions and Thermal Properties

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Questions and Answers

What is the process of breaking down food in our bodies to release nutrients?

  • Fermentation
  • Baking
  • Digestion (correct)
  • Evaporation
  • Which of the following is the primary factor that affects the pressure of a gas?

  • Volume of the container
  • Number of particles (correct)
  • Shape of the container
  • Color of the gas
  • What is the difference between evaporation and boiling?

  • Boiling occurs rapidly, while evaporation occurs slowly
  • Evaporation occurs rapidly, while boiling occurs slowly
  • Evaporation occurs at the surface, while boiling occurs throughout the liquid (correct)
  • Boiling occurs at the surface, while evaporation occurs throughout the liquid
  • What causes a balloon to inflate when heated?

    <p>Particles moving faster and colliding with the surface</p> Signup and view all the answers

    What is the result of evaporation on a liquid?

    <p>Cooling of the liquid</p> Signup and view all the answers

    What is the process of dough rising due to a chemical reaction between yeast and other ingredients?

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

    What is the main reason for thermal expansion in substances?

    <p>Particles gain energy and move faster</p> Signup and view all the answers

    What happens to the metal ball in the experiment when it is heated?

    <p>It expands and will not pass through the ring</p> Signup and view all the answers

    What is NOT a factor that affects evaporation?

    <p>Color of the surface</p> Signup and view all the answers

    What happens to the metal ball in the experiment when it cools down?

    <p>It contracts and returns to its original size</p> Signup and view all the answers

    What is the result of thermal expansion in a solid?

    <p>The solid expands and becomes larger</p> Signup and view all the answers

    What is the term for the process of changing from a liquid to a gas?

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

    What type of change occurs when wood is burned to produce ash and smoke?

    <p>Chemical Change</p> Signup and view all the answers

    What is the term for the temperature at which a substance changes from liquid to gas?

    <p>Boiling Point</p> Signup and view all the answers

    What is the process called when a substance reacts with oxygen, often leading to rust or tarnish?

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

    What is the term for the process of changing from a gas to a liquid?

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

    What type of change occurs when iron reacts with oxygen to form iron oxide (rust)?

    <p>Chemical Change</p> Signup and view all the answers

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