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  Earth Science
  Life Science
  Physical Science

Hands-on Activity

Before and After

Fun Forces
Summary
In this activity, students will evaluate different 'before' and 'after' stations to decide if heating and cooling changes are reversible. For example, cake batter vs. a cake that has been baked or melting and freezing water. Students will identify if heating or cooling the substance could reverse the change.
Overview
Topic: Structures and Properties of Matter
Real World Science Topics:
  • An evaluation of the common physical changes of substances.
  • A comparison of the before and after states of matter and the process by which they change.
  • An evaluation of the relationship between how a substance changed and its possibility of being reversed.
Objective
After completing this activity, students should be able to evaluate when change is reversible or irreversible. They will be able to describe how different substances can change based on heating or cooling the substance. Students will also be able to discuss if a change in a substance can be reversed by heating or cooling. Students will share ideas about reversible and irreversible changes to substances they use in their everyday lives.

Activity Difficulty Rating: 1 Each hands-on science activity has been ranked based on difficulty of set up and how difficult they are to perform. The rating scale is from 1 to 5, with 1 being the easiest and 5 being the most complicated.

5-MINUTE REFRESHER

TAKE FIVE

Use these quick refreshers to prep for your next class.