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7.6C Physical vs chemical changes

Quiz by Gregorio Martinez

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20 questions
Show answers
  • Q1
    Which of the following is a chemical change?
    Chopping wood
    Melting of ice
    Rust forming on iron
    Dissolving sugar in water
    30s
  • Q2
    Which of the following statements is true about physical changes?
    They involve chemical reactions.
    They are permanent changes.
    They change the chemical composition.
    They do not create new substances.
    30s
  • Q3
    What occurs during a chemical change?
    The formation of new substances.
    The size of the substance decreases.
    The state of matter changes.
    The substance changes color.
    30s
  • Q4
    Which of the following is an example of a physical change?

    cooking an egg

    Boiling water.
    Burning wood.
    Baking a cake.
    30s
  • Q5
    When ice melts into water, what type of change is occurring?
    Nuclear change.
    Biological change.
    Chemical change.
    Physical change.
    30s
  • Q6
    Which of the following describes a characteristic of chemical changes?
    They can be easily undone.
    They always involve a change in state.
    They only involve physical materials.
    They are often irreversible.
    30s
  • Q7
    What is a sign that a chemical change has occurred?
    Production of gas.
    Change in color only.
    Change in size.
    Dissolving in water.
    30s
  • Q8
    Which of the following processes is considered a chemical change?
    Freezing water.
    Shredding a document.
    Mixing salt and water.
    Burning paper.
    30s
  • Q9
    Which scenario is an example of a physical change?
    Fermenting grapes into wine.
    Cooking an egg.
    Crushing a can.
    Baking bread.
    30s
  • Q10
    Which of the following is a characteristic of a physical change?
    New substances are formed.
    Energy is absorbed or released.
    It is always irreversible.
    The composition of the substance remains the same.
    30s
  • Q11
    Which of the following is a sign of a chemical change?
    The temperature increases
    A color change occurs
    The substance evaporates
    The substance freezes
    30s
  • Q12
    Which of the following is a common sign of a chemical change?
    The mixture is shaken
    Bubbles form in a liquid
    The solid melts
    The liquid becomes colder
    30s
  • Q13
    What might indicate that a chemical change has taken place?
    The liquid becomes clear
    The mass of the substance stays the same
    The substance changes state from solid to liquid
    A new odor is detected
    30s
  • Q14
    Which of the following is a sign that a chemical change may have occurred?
    The substance turns into a liquid
    A temperature change occurs
    The size of the piece changes
    The mixture is stirred
    30s
  • Q15
    What is a common indicator that a chemical change has taken place?
    The mixture separates into layers
    The substance solidifies
    Emission of light occurs
    The color of the substance changes
    30s

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