What happened to the stone gargoyles over time?

What happened to the stone gargoyles over time?

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# Unit Review: Anchoring Phenomenon
  • What caused the gargoyle to change over time?
  • What pieces of evidence from this unit have helped you explain the change?

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# Unit Review: Key Concepts
  • Substances can change other substances
  • Substances can change but not disappear
  • Acids are very reactive substances
  • Chemical reactions are the mixing of two or more substances that create a new substance
  • Gases are made of particles too small to be seen
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# Extensions
Below are ideas for extending the Performance Task of this unit.
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Activity: Disappearing Eggshell

Follow these instructions, to react vinegar with eggshells and make a naked egg (an egg without a shell)! Eggshells are made of a substance called calcium carbonate, which is the same material the stone gargoyles are made of. The eggshell and vinegar reaction models the reaction between stone gargoyles and acid rain. Try the experiment, and then:

  • Draw a particle model that shows what happens to the eggshell in the vinegar.
  • Pour the vinegar (with the dissolved shell) onto a flat surface (petri dish, plate). Allow the vinegar to evaporate and see what is left behind!
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You've completed the Performance Task!

If you have more time, view the extension activity in the extensions.

This was the last Mystery of Chemical Magic.

View the unit's summative assessment .

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Activity Prep

Print Prep

In the Performance Task, students complete the final revision of their Alchemist Argument. They create a particle model showing the reaction between the stone gargoyle and acid rain to support their argument.

Preview activity

Unit Review

15 mins

Wrap-Up

5 mins

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