Worksheet

Physical and Chemical Change

Grade 5 - Science - Building Confidence

NameDate

  1. Classify this change: a steel nail rusts.

    • physical change
    • chemical change
    • solution
    • mixture

  2. Which evidence supports the claim that "wood burns in a campfire" is a chemical change?

    • the sugar is spread through the water but no new substance is made
    • only the size and shape change
    • ash and gases form with different properties
    • odor and taste change as new substances form

  3. Which observation is about new substances in this event: wood burns in a campfire?

    • no new material forms during shaping
    • no new substance forms
    • the paper pieces are still paper
    • new substances such as ash appear

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

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

  5. Why is "the pieces only become smaller" not the best evidence for "baking soda and vinegar fizz"?

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

  6. Classify this change: ice melts into liquid water.

    • chemical change
    • solution
    • physical change
    • mixture

  7. Which evidence supports the claim that "paper is cut into small squares" is a physical change?

    • ash and gases form with different properties
    • the substance is still water
    • rust forms with different color and properties
    • only the size and shape change

  8. Which observation is about new substances in this event: sugar dissolves in water?

    • a new reddish-brown substance appears
    • the new odor shows a different substance formed
    • a gas forms that was not there before
    • evaporation can recover the sugar

  9. Which model step is most important for deciding whether ice melts into liquid water is physical or chemical?

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

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

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