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Reversible or Irreversible?

Grade 2

Performance Expectations 2-PS1-4: Construct an argument with evidence that some changes caused by heating or cooling can be reversed and some cannot.

Disciplinary Core Idea: PS1.B: Heating or cooling a substance may cause changes that can be observed. Sometimes these changes are reversible, and sometimes they are not.

Cross cutting concepts:

Cause and Effect

  • Events have causes that generate observable patterns. (2-PS1-4)

  • Simple tests can be designed to gather evidence to support or refute student ideas about causes. (2-PS1-4)

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