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Reversible Change Definition

A reversible change is a change that can be undone. For example, melting butter and cooling it to solidify again.

View Lesson on Heating and Cooling
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Heating and Cooling

LESSON MATERIALSmove

Fun Facts

  • Melting chocolate then freezing it is a reversible change.
  • Some changes are non-reversible, like when you cook an egg it cannot go back to the way it was before.
  • An ice cube melting then re-freezing is reversible.

Why Do We Need To Know About Reversible Change

Learning about reversible change helps us understand the science behind everyday stuff. It’s important for many jobs. For example, chefs need to know how heating and cooling food changes its taste and texture. Knowing how to use cold temperatures is key in keeping foods fresh longer. Serving drinks can depend on how well we control their temperature.

Fashion designers use it to get rid of wrinkles in clothes to make them look good. Environmental scientists and weather forecasters study reversible changes to predict the weather. This knowledge is useful for lots of different jobs.

Frequently Asked Questions

What are some examples of heating?
Heating up marshmallows in a fire and heating up clothes with an iron are both examples of heating.
What are some examples of cooling?
Cooling down a drink with ice and cooling your breath due to the cold air outside are both common examples.
When you heat up a stick of butter, what state of matter does it become?
Butter changes from a solid to a liquid when it is heated.
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