Worksheet

Physical and Chemical Change

Grade 5 - Science - Challenge Me

NameDate

  1. Classify this change: sugar dissolves in water.

    • solution
    • mixture
    • physical change
    • chemical change

  2. Which evidence supports the claim that "clay is shaped into a bowl" is a physical change?

    • the substance is still water
    • gas bubbles form from new substances
    • only the size and shape change
    • the clay changes shape but remains clay

  3. Which observation is about new substances in this event: paper is cut into small squares?

    • the paper pieces are still paper
    • no new substance forms
    • a new reddish-brown substance appears
    • a gas forms that was not there before

  4. Which model step is most important for deciding whether a steel nail rusts is physical or chemical?

    • compare properties before and after the change
    • choose the loudest change every time
    • count the letters in the event name
    • ignore observations after the change

  5. Why is "heat and light are released by burning" not the best evidence for "sugar dissolves in water"?

    • it is the exact evidence from the event
    • it describes a different kind of change
    • it proves every change is chemical
    • it means matter disappeared

  6. Classify this change: clay is shaped into a bowl.

    • physical change
    • solution
    • chemical change
    • mixture

  7. Which evidence supports the claim that "baking soda and vinegar fizz" is a chemical change?

    • ash and gases form with different properties
    • gas bubbles form from new substances
    • the clay changes shape but remains clay
    • only the size and shape change

  8. Which observation is about new substances in this event: a steel nail rusts?

    • no new material forms during shaping
    • evaporation can recover the sugar
    • a new reddish-brown substance appears
    • no new substance forms

  9. Which model step is most important for deciding whether baking soda and vinegar fizz is physical or chemical?

    • count the letters in the event name
    • choose the loudest change every time
    • compare properties before and after the change
    • ignore observations after the change

  10. Why is "the wood only changes position" not the best evidence for "wood burns in a campfire"?

    • it describes a different kind of change
    • it is the exact evidence from the event
    • it means matter disappeared
    • it proves every change is chemical
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